СПИСОК патентов США - подгруппа МПК16 H04L27/20
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| № п/п | Номер патента | Название патента | |||
2017 | |||||
| 1 | 9608735 | MIMO equalization optimized for baud rate clock recovery in coherent DP-QPSK metro systems | |||
| 2 | 9602325 | Transmitter and method of transmitting | |||
| 3 | 9602143 | System and method for generating wireless electromagnetic transmissions modulated with software defined complex waveforms | |||
| 4 | 9590834 | Radio communication apparatus capable of switching modulation schemes | |||
| 5 | 9590663 | Radio apparatus | |||
| 6 | 9584349 | Transmission circuit | |||
| 7 | 9578447 | High speed overlay mode for burst data and real time streaming (audio) applications | |||
| 8 | 9577684 | High frequency time interleaved digital to time converter (DTC) | |||
| 9 | 9577678 | Bit interleaver for low-density parity check codeword having length of 64800 and code rate of 7/15 and quadrature phase shift keying, and bit interleaving method using same | |||
| 10 | 9577638 | Digital signal up-converting apparatus and related digital signal up-converting method | |||
| 11 | 9571626 | Automobile cellular, WLAN and satellite communications | |||
| 12 | 9571317 | Bandwidth efficient continuous phase modulation | |||
| 13 | 9565043 | Hybrid I-Q polar transmitter with quadrature local oscillator (LO) phase correction | |||
| 14 | 9564975 | Optical transmission device, method of optical transmission, and non-transitory computer-readable medium | |||
| 15 | 9564964 | Optical signal processing device, optical signal processing method and recording medium | |||
| 16 | 9564963 | Automatic power control system for a code division multiple access (CDMA) communications system | |||
| 17 | 9559761 | Proximity-based services discovery privacy | |||
| 18 | 9553660 | Hybrid orthogonal/non-orthogonal multiple access for radio signal transmission and reception | |||
| 19 | 9553643 | User equipment and methods for codebook subsampling for enhanced 4TX codebooks | |||
| 20 | 9548878 | Digital radio frequency transceiver system and method | |||
| 21 | 9548877 | Digital communication system | |||
| 22 | 9544007 | Wireless transmission system, wireless communication device, and wireless communication method | |||
| 23 | 9537687 | Multi-modulation for data-link power reduction and throughput enhancement | |||
2016 | |||||
| 24 | 9531451 | System and method for high-speed analog beamforming | |||
| 25 | 9525581 | Wireless communication device and malfunction determining method | |||
| 26 | 9525575 | Transmission apparatus, reception apparatus and digital radio communication method | |||
| 27 | 9521023 | Systems for analog phase shifting | |||
| 28 | 9520988 | Adaptation to 3-phase signal swap within a trio | |||
| 29 | 9520955 | Detection apparatus and detection method for received signal strength indicator | |||
| 30 | 9520923 | Low-complexity ACPR-enhancing digital RF MIMO transmitter | |||
| 31 | 9520832 | Device for connecting two pieces of equipment via an Ethernet link, and a docking station for such a piece of equipment | |||
| 32 | 9515815 | Transpositional modulation systems, methods and devices | |||
| 33 | 9510139 | Phy layer options for body area network (BAN) devices | |||
| 34 | 9510138 | PHY layer parameter for body area network (BAN) devices | |||
| 35 | 9509489 | Correction of quadrature modulation errors | |||
| 36 | 9509486 | Techniques for indicating a frame format for transmissions using unlicensed radio frequency spectrum bands | |||
| 37 | 9509410 | High-speed optical transceiver systems and methods | |||
| 38 | 9503167 | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals | |||
| 39 | 9503153 | Spread spectrum GMSK signals | |||
| 40 | 9497057 | Method for performing channel sounding in wireless LAN system and apparatus | |||
| 41 | 9497056 | Conveying metadata by modulation of pilot carriers in COFDM broadcasting | |||
| 42 | 9497054 | Electronic devices having interconnect radiation mitigation capabilities | |||
| 43 | 9485128 | System and method for scrambling using a bit scrambler and a phase scrambler | |||
| 44 | 9485126 | Signal combining system for constant envelope transmission of information | |||
| 45 | 9485076 | Dynamic polarization modulation and control | |||
| 46 | 9485030 | Optical signal modulation | |||
| 47 | 9484975 | Modular microwave backhaul outdoor unit | |||
| 48 | 9479373 | Packet processor verification methods and systems | |||
| 49 | 9473268 | Transmitting apparatus, receiving apparatus, transmission method, and reception method | |||
| 50 | 9468077 | Lighting system and method for operating a lighting system using power consumption for information transmission | |||
| 51 | 9467321 | Method, device and computer program for transmitting data to at least one receiver, and method, device and computer program for receiving data transmitted by a source | |||
| 52 | 9450848 | Methods and apparatus for adjusting a phase of a transmitted signal based on an evaluation of an eye opening in an eye diagram | |||
| 53 | 9450716 | Cross-correlated digital wireless communication system | |||
| 54 | 9444666 | Device for generating a vector-modulated output signal and method for generating a vector-modulated output signal | |||
| 55 | 9438456 | Systems and methods of polyphase generation | |||
| 56 | 9438305 | Method for transmitting non binary error correcting code words with CCSK modulation, and corresponding signal and device | |||
| 57 | 9438301 | PLL circuit, calibration method, and wireless communication apparatus | |||
| 58 | 9432152 | Video multimode multimedia data communication systems | |||
| 59 | 9431961 | Phase shifting mixer | |||
| 60 | 9431958 | Apparatus and method for generating an oscillator signal | |||
| 61 | 9426005 | Method for indirect measurement of the phase delay of a RF-PWM modulator | |||
| 62 | 9425874 | Signal generating method and signal generating apparatus | |||
| 63 | 9425834 | Trajectory modification technique for polar transmitter | |||
| 64 | 9425796 | Data converting device, digital transmitting apparatus using the data converting device, and related data converting method | |||
| 65 | 9419744 | Polarization multiplexing optical transmitter and operation control method | |||
| 66 | 9419657 | Hybrid I/Q and polar transmitter | |||
| 67 | 9418259 | Tag transmission apparatus and signal transmitting method thereof | |||
| 68 | 9413572 | Method of converting an optical communications signal and an optical receiver | |||
| 69 | 9413419 | Phase-optimized constant envelope transmission (POCET) method, apparatus and system | |||
| 70 | 9407486 | Method and apparatus for generating signal in wireless communication system | |||
| 71 | 9407483 | Communication using continuous-phase modulated signals | |||
| 72 | 9407203 | Combined amplitude-time and phase modulation | |||
| 73 | 9402251 | Enhanced physical downlink control channel scrambling and demodulation reference signal sequence generation | |||
| 74 | 9385903 | Rhombic-QPSK modulation for improved tolerance to nonlinearity in fiber communication systems | |||
| 75 | 9385902 | Apparatus and method for transmitting tag | |||
| 76 | 9385832 | Methodology and method and apparatus for signaling with capacity optimized constellations | |||
| 77 | 9385816 | Methods and arrangements for frequency shift communications by undersampling | |||
| 78 | 9379863 | Method for signaling information by modifying modulation constellations | |||
| 79 | 9379798 | Modulation circuit for a radio device and a method thereof | |||
| 80 | 9374261 | Signal modulator and signal modulating method | |||
| 81 | 9369321 | Increasing sensor data carrying capability of phase generated carriers | |||
| 82 | 9369316 | Digital demodulation method and system | |||
| 83 | 9369261 | Circuit for baseband harmonic rejection | |||
| 84 | 9363129 | Method and a device for decoding differentially modulated symbols | |||
| 85 | 9357437 | Methods and arrangements for communications in low power wireless networks | |||
| 86 | 9356813 | Capacity for narrow-band hybrid modulation | |||
| 87 | 9356703 | High-speed low-jitter communication system | |||
| 88 | 9356646 | Chirp spread spectrum system and method | |||
| 89 | 9351319 | Wireless communication system, wireless communication apparatus, wireless communication method, and computer program | |||
| 90 | 9350582 | OFDM or OFDMA signaling for ranging and data | |||
| 91 | 9350489 | FEC frame header design for cable television signals | |||
| 92 | 9349029 | Transmission apparatus for a wireless device | |||
| 93 | 9344311 | Wireless transmission | |||
| 94 | 9344270 | Phase detection and correction for non-continuous local oscillator generator | |||
| 95 | 9344171 | Transmission method, transmission device, reception method, and reception device | |||
| 96 | 9337888 | Method for radio transmission by ultra wideband transmission | |||
| 97 | 9337874 | High-speed digital signal processing systems | |||
| 98 | 9332541 | Methods and devices for transmission of signals in a telecommunication system | |||
| 99 | 9331726 | Method for locating defective points in a high frequency (HF) signal transmission path | |||
| 100 | 9325551 | Removal of irrelevance in phase-modulated digital carrier-signals | |||
| 101 | 9325549 | Converter unit for an M-order digital modulation and a method thereof | |||
| 102 | 9319212 | Fingerprint authenticated touchsceeen contolled cascaded 3G-OFDM mobile systems | |||
| 103 | 9313076 | Antenna modulation method applicable to wireless transmitter and transmitter using the same | |||
| 104 | 9306783 | Selective activation of VAMOS-2 mode | |||
| 105 | 9306498 | Current driven floating driver circuit | |||
| 106 | 9300518 | Pulse radar device and control method therefor | |||
| 107 | 9300513 | Signal transmission device adjusting electrical characteristic value corresponding to logic level and signal transmitting method thereof | |||
| 108 | 9300508 | High data rate milllimeter wave radio on a chip | |||
| 109 | 9298199 | Voltage generating circuit and polar transmitter | |||
| 110 | 9294941 | Phase transformation of repeated signals | |||
| 111 | 9294196 | Method for processing data in an optical network element and optical network element | |||
| 112 | 9288841 | Direct digital frequency generation using time and amplitude | |||
| 113 | 9281977 | Apparatus and method for separating two phase-modulated signals having different amplitudes | |||
| 114 | 9281976 | Transmitter and method of transmitting | |||
| 115 | 9276800 | Single frequency synthesizer based FDD transceiver | |||
| 116 | 9276790 | Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications | |||
| 117 | 9270429 | Method for signaling information by modifying modulation constellations | |||
| 118 | 9270381 | Method and apparatus for transmitting and receiving coherent optical OFDM | |||
| 119 | 9270377 | High-speed optical transceiver for infiniband and ethernet | |||
| 120 | 9264877 | Modems for mobile internet and cellular systems | |||
| 121 | 9264147 | Method and apparatus for phase shift keyed optical communications | |||
| 122 | 9264144 | Transmission and reception of quad-subcarrier orthogonal frequency division multiplexed signals | |||
| 123 | 9246722 | Device for providing a differential output signal and method for providing a differential output signal | |||
| 124 | 9246717 | Optimized receivers for faster than nyquist (FTN) transmission rates in high spectral efficiency satellite systems | |||
| 125 | 9244126 | Automated test system with event detection capability | |||
| 126 | 9240920 | Wireless transmitter for multi-mode concurrent transmission of signals complying with different communication standards | |||
| 127 | 9231805 | Device for carrier phase recovery | |||
| 128 | 9231523 | Modulating device and modulation method | |||
2015 | |||||
| 129 | 9225576 | Resilient channel and broadcast modulation | |||
| 130 | 9225575 | Precoding for single transmission streams in multiple antenna systems | |||
| 131 | 9225565 | Device for generating a vector-modulated output signal and method for generating a vector-modulated output signal | |||
| 132 | 9225562 | Digital wideband closed loop phase modulator with modulation gain calibration | |||
| 133 | 9210005 | Apparatus and method for generating differential signal, and transmission apparatus and method having the same | |||
| 134 | 9209852 | Modular microwave backhaul outdoor unit | |||
| 135 | 9203519 | Pair-wise symbol correlated high receiver sensitivity modulation format | |||
| 136 | 9198188 | Operating a wireless system in an unlicensed band | |||
| 137 | 9198144 | Power supply adjustment and polar modulation in a MIMO system | |||
| 138 | 9197470 | Data transmission via multi-path channels using orthogonal multi-frequency signals with differential phase shift keying modulation | |||
| 139 | 9197282 | Phase-optimized constant envelope transmission (POCET) method, apparatus and system | |||
| 140 | 9197258 | System and method for generating a data dependent clock for a DAC in a modulator | |||
| 141 | 9197164 | RF power transmission, modulation, and amplification, including direct cartesian 2-branch embodiments | |||
| 142 | 9197163 | Systems, and methods of RF power transmission, modulation, and amplification, including embodiments for output stage protection | |||
| 143 | 9191004 | Signal converting device and digital transmitting apparatus applying the signal converting device | |||
| 144 | 9184963 | Transmitting device, receiving device and communication method for an OFDM communication system with new preamble structure | |||
| 145 | 9184962 | Distributed antenna system for MIMO signals | |||
| 146 | 9178735 | Phase-modulated on-off keying for millimeter wave spectrum control | |||
| 147 | 9178734 | Communications transmitter having high-efficiency combination modulator | |||
| 148 | 9178731 | Transmission apparatus for a wireless device using delta-sigma modulation | |||
| 149 | 9172447 | Method and apparatus for transceiving data in a MIMO system | |||
| 150 | 9166617 | Communication unit, digital band-pass sigma-delta modulator and method therefor | |||
| 151 | 9160602 | Method of improving performance in a hierarchical modulation system | |||
| 152 | 9160489 | Origin dodging for transmitted signal | |||
| 153 | 9160402 | Transmission method, transmitter, reception method, and receiver | |||
| 154 | 9154350 | PHY layer options for body area network (BAN) devices | |||
| 155 | 9154348 | Systems and methods for improving communication sensitivity | |||
| 156 | 9148323 | Transmitter | |||
| 157 | 9143239 | Signal processing device, signal processing method, and communication device | |||
| 158 | 9143088 | Control modules | |||
| 159 | 9137069 | Systems and methods to frequency shift unwanted signal components | |||
| 160 | 9137068 | Wireless communications device having temporary correlation matrix with time inversion and related methods | |||
| 161 | 9137067 | High efficiency outphasing transmitter for electronically scanned arrays | |||
| 162 | 9137066 | Method and apparatus for generating a metric for use in one or more of lock detection, SNR estimation, and modulation classification | |||
| 163 | 9136948 | Electrical modulator driver circuit for generating multi-level drive signals for QAM optical transmission | |||
| 164 | 9136825 | Method and device for implementing tracking filters and RF front end of software defined radios | |||
| 165 | 9130806 | Wideband phase modulation methods and apparatus | |||
| 166 | 9130805 | Phase detector | |||
| 167 | 9130679 | Polarization-switched differential ternary phase-shift keying | |||
| 168 | 9130610 | Transmission apparatus and transmission method | |||
| 169 | 9124267 | Digital transmitter and method for calibrating digital transmitter | |||
| 170 | 9118319 | Reconfigurable circuit block supporting different interconnection configurations for rate-conversion circuit and processing circuit and related method thereof | |||
| 171 | 9112754 | Techniques for generating bit log-likelihood ratios in communication systems using differential modulation | |||
| 172 | 9112753 | Interleaver design and header structure for ITU G.hnem | |||
| 173 | 9106501 | Quadrature power amplifier having increased efficiency | |||
| 174 | 9106486 | Transmission apparatus, reception apparatus and digital radio communication method | |||
| 175 | 9100250 | Pre-phase error correction | |||
| 176 | 9100127 | Digital light path labeling system with dual polarization quaternary phase-shift keying modulation | |||
| 177 | 9100125 | Frame formatting for high rate optical communications | |||
| 178 | 9100119 | Apparatus and method for multiport amplification in communication system | |||
| 179 | 9094255 | Method and device for amplitude modulation of an electromagnetic signal emitted by a contactless transceiver system | |||
| 180 | 9094131 | Signal generating method and apparatus | |||
| 181 | 9094113 | Apparatus and method for reducing phase noise in near field communication device signaling | |||
| 182 | 9094004 | Transmitter system with digital phase rotator used for applying digital phase rotation to constellation data and related signal transmission method thereof | |||
| 183 | 9083508 | Method and apparatus for data transmission using multiple transmit antennas | |||
| 184 | 9077602 | Systems and methods for fast and precise frequency estimation | |||
| 185 | 9077391 | Transmitter front-end device for generating output signals on basis of polyphase modulation | |||
| 186 | 9071494 | Systems and methods for fast and precise frequency estimation | |||
| 187 | 9065708 | Apparatus and method of transmitting preamble having additional information in differential modulation packet data communication | |||
| 188 | 9065707 | Polarization-independent LCOS device | |||
| 189 | 9059889 | Polar multi-symbol delay detector for carrier phase and frequency recovery for coherent transmission | |||
| 190 | 9059790 | Ultra-wide band communication apparatus and method | |||
| 191 | 9054925 | Parallel digital-to-time converter architecture | |||
| 192 | 9042486 | Sideband suppression in angle modulated signals | |||
| 193 | 9031165 | Efficient signal processing for receive and transmit DBF arrays | |||
| 194 | 9019031 | Method for the phase modulation of a carrier signal transmitted from a transmitter to a contactless transponder, and device for implementing same | |||
| 195 | 9008151 | Transmission method, transmitter, reception method, and receiver | |||
| 196 | 9001948 | Pulse shaping in a communication system | |||
| 197 | 9001931 | Method and device for digital modulation with low transition density | |||
| 198 | 9001930 | Dual-stream signal (SIG) field encoding with higher order modulation | |||
| 199 | 9001929 | Method and apparatus for transmitting symbol repeatedly in wireless communication system | |||
| 200 | 9000858 | Ultra-wide band frequency modulator | |||
| 201 | 8976901 | Phase shift keying transmitter circuit | |||
| 202 | 8948308 | Apparatus and method of transmitting hierarchically modulated signal | |||
2014 | |||||
| 203 | 8923439 | Complementary signal mixing | |||
| 204 | 8923438 | Dual rate communication | |||
| 205 | 8885769 | Signal generation method and signal generation device | |||
| 206 | 8885768 | Low-loss, broad band, LC I/Q phase shifter | |||
| 207 | 8867663 | OFDM signal transmission method and apparatus | |||
| 208 | 8861644 | Devices of IQ mismatch calibration, and methods thereof | |||
| 209 | 8860522 | Phase and amplitude modulator | |||
| 210 | 8817912 | Phase-rotated tone-grouping modulation | |||
| 211 | 8798203 | Signal processing apparatus and signal processing method | |||
| 212 | 8797111 | Poly-phase filter, and a single-side band mixer including the same | |||
| 213 | 8787498 | Systems and methods for enhanced carrier suppression | |||
| 214 | 8774318 | Method and apparatus for constant envelope modulation | |||
| 215 | 8766738 | Decomposer and amplifier | |||
| 216 | 8750411 | Method and apparatus for reducing transmitter interference | |||
| 217 | 8744006 | Transmit diversity for pre-coded radio control signals | |||
| 218 | 8731098 | Multiple gigahertz clock-data alignment scheme | |||
| 219 | 8724739 | Variable phase shifter-attenuator | |||
| 220 | 8723613 | Wideband phase modulator | |||
| 221 | 8718191 | Method and apparatus for transmitting/receiving data in wireless communication system | |||
| 222 | 8718190 | Receiver/transmitter capable of simultaneously receiving/transmitting discontinuous frequency signals and method thereof | |||
| 223 | 8717116 | Method and apparatus for modifying a characteristic of a complex-valued signal | |||
| 224 | 8705658 | Method and apparatus of modulating signal in broadcasting and communication system | |||
| 225 | 8675774 | Constellation rearrangement for transmit diversity schemes | |||
| 226 | 8654888 | Precoder circuit | |||
| 227 | 8644420 | Alignment of in-phase and quadrature data in quadrature phase shift keying optical transmitters | |||
| 228 | 8638880 | Radio base station and user equipment and methods therein | |||
2013 | |||||
| 229 | 8610514 | Full spectrum modulator for digital television signals | |||
| 230 | 8605824 | Radio communication apparatus and radio communication method | |||
| 231 | 8598959 | Modulation apparatus, phase setting method and test apparatus | |||
| 232 | 8594228 | Apparatus and method of differential IQ frequency up-conversion | |||
| 233 | 8594227 | Measurement of system time delay | |||
| 234 | 8594226 | Method for processing a digital signal in a digital delta-sigma modulator, and digital delta-sigma modulator therefor | |||
| 235 | 8588338 | Driver circuit for driving a power amplifier | |||
| 236 | 8588337 | Vector modulator | |||
| 237 | 8571135 | Method, system and apparatus for balanced frequency up-conversion of a baseband signal | |||
| 238 | 8565348 | Radio transmitting apparatus | |||
| 239 | 8558631 | Resilient channel and broadcast modulation | |||
| 240 | 8553627 | Transmission diversity scheme on physical uplink control channel (PUCCH) with ACK/NACK differentiation | |||
| 241 | 8542773 | Digital RF converter, digital RF modulator and transmitter including the same | |||
| 242 | 8494083 | Transmitting/receiving system and method of processing broadcast signal in transmitting/receiving system | |||
| 243 | 8488718 | Correction of distortions in an emission chain | |||
| 244 | 8476985 | Method and arrangement for generating a frequency-modulated signal | |||
| 245 | 8451934 | Method and system for increasing throughput of a wireless channel using multipath transmission | |||
| 246 | 8428183 | In-phase and quadrature pattern alignment for quadrature phase shift keying optical transmitters | |||
| 247 | 8422589 | Method and apparatus for transmitting data in a digital communication system, and computer-readable storage medium relating thereto | |||
| 248 | 8411795 | High power high linearity digital phase shifter | |||
| 249 | 8391412 | PN long code shift for access attempt | |||
| 250 | 8391411 | Wireless communication apparatus and wireless communication method | |||
| 251 | 8391410 | Methods and apparatus for configuring a pilot symbol in a wireless communication system | |||
| 252 | 8378465 | Method and apparatus for optical modulation | |||
| 253 | 8369451 | Method and apparatus for constant envelope modulation | |||
| 254 | 8358719 | Method and device for the compensation of signal errors in IQ-modulators | |||
| 255 | 8355465 | Driver circuit for driving a power amplifier | |||
2012 | |||||
| 256 | 8331799 | Non-feedback pre-encoder for optical DQPSK modulation | |||
| 257 | 8331490 | Methods and apparatus for conditioning communications signals based on detection of high-frequency events in polar domain | |||
| 258 | 8325827 | Transmitting device, receiving device and communication method for an OFDM communication system with new preamble structure | |||
| 259 | 8319569 | Quadrature amplitude modulator and quadrature amplitude modulation method | |||
| 260 | 8306133 | Transmitter and method for configuring transmission frame | |||
| 261 | 8299865 | Quadrature modulator and semiconductor integrated circuit with it built-in | |||
| 262 | 8290086 | Efficient outphasing transmitter | |||
| 263 | 8289096 | Wide band polar modulator | |||
| 264 | 8275070 | Apparatus and method of transmitting/receiving signals using signaling point rotation at mutual cooperation transmission | |||
| 265 | 8270511 | Methodology and method and appartus for signaling with capacity optimized constellations | |||
| 266 | 8269569 | Test apparatus for digital modulated signal | |||
| 267 | 8259850 | UWB transmission apparatus and UWB transmission method | |||
| 268 | 8259840 | Data communication via a voice channel of a wireless communication network using discontinuities | |||
| 269 | 8249193 | Reference signal sequence representation in wireless communication device | |||
| 270 | 8249192 | Techniques to transmit data rate control signals for multi-carrier wireless systems | |||
| 271 | 8218680 | Radio communication apparatus capable of switching modulation schemes | |||
| 272 | 8213537 | Apparatuses, systems, and methods for reducing spurious emissions resulting from carrier leakage | |||
| 273 | 8198949 | Digital modulator | |||
| 274 | 8170143 | Method and transmitting device for encoding data in a differential space-time block code | |||
| 275 | 8160178 | Transmitter | |||
| 276 | 8154357 | Modulation for amplitude-modulating a signal | |||
| 277 | 8139677 | Method for selecting constellation rotation angles for quasi-orthogonal space-time and space-frequency block coding | |||
| 278 | 8139655 | System and method for effectively transferring electronic information | |||
| 279 | 8111777 | Method, apparatus and system for high-speed transmission on fiber optic channel | |||
| 280 | 8107556 | OFDM signal transmission method and apparatus | |||
| 281 | 8098764 | Millimeter wave radio with phase modulation | |||
| 282 | 8090041 | Systems and methods for forward link closed loop beamforming | |||
2011 | |||||
| 283 | 8085108 | Digital polar radio frequency transmitting device with a radiofrequency reference oscillator and an integrated circuit comprising such device | |||
| 284 | 8077797 | Method, system, and apparatus for balanced frequency up-conversion of a baseband signal | |||
| 285 | 8064541 | Hyper phase shift keying modulation | |||
| 286 | 8044742 | Wideband phase modulator | |||
| 287 | 8036310 | Transmitter and receiver | |||
| 288 | 8036309 | Method and transmitter structure reducing ambiguity by repetition rearrangement in the symbol domain | |||
| 289 | 8036304 | Apparatus and method of differential IQ frequency up-conversion | |||
| 290 | 8036301 | Radio transmitter with reduced power consumption | |||
| 291 | 8031028 | Polar signal processor to drive a segmented power amplifier and method therefore | |||
| 292 | 8022782 | Two-point phase modulator and method of calibrating conversion gain of the same | |||
| 293 | 8018295 | Modulation device and pulse wave generation device | |||
| 294 | 8014468 | Energy detection receiver for UWB | |||
| 295 | 8014462 | Apparatus for performing alternating quadratures differential binary phase shift keying modulation and demodulation | |||
| 296 | 8008981 | Multi-phase ultra-wideband signal generator using differential pulse oscillators and array thereof | |||
| 297 | 7999629 | IQ-modulation | |||
| 298 | 7983235 | High speed overlay mode for burst data and real time streaming (audio) applications | |||
| 299 | 7965793 | Method for reducing ambiguity levels of transmitted symbols | |||
| 300 | 7961815 | Methods and systems for transmission of multiple modulated signals over wireless networks | |||
| 301 | 7953177 | Radio communication apparatus capable of switching modulation schemes | |||
| 302 | 7933359 | Polar transmitter for increasing modulation rate using multi-phase generator | |||
| 303 | 7929640 | High speed differential encoder and interleaver | |||
| 304 | 7928813 | Transient noise control for digital RF modulation | |||
| 305 | 7915997 | System and method for remote activation with interleaved modulation protocol | |||
| 306 | 7915970 | Bi-phase modulator apparatus and method | |||
| 307 | 7915969 | Distortion compensating circuit | |||
| 308 | 7912378 | Modulating a signal using a fractional phase modulator | |||
| 309 | 7902937 | Positive coefficient weighted quadrature modulation method and apparatus | |||
| 310 | 7893758 | Quadrature modulator and calibration method | |||
| 311 | 7885354 | System and method for enhancing near vertical incidence skywave ("NVIS") communication using space-time coding | |||
| 312 | 7876855 | Phase modulation power spreading used to reduce RF or microwave transmitter output power spur levels | |||
| 313 | 7872545 | Jumpless phase modulation in a polar modulation environment | |||
| 314 | 7872543 | Bi-polar modulator | |||
| 315 | 7864882 | Method and apparatus for generating constant envelope modulation using a quadrature transmitter | |||
2010 | |||||
| 316 | 7860402 | Modulating a signal according to 2.sup.n-PSK modulation | |||
| 317 | 7860188 | Digital modulator for a GSM/GPRS/EDGE wireless polar RF transmitter | |||
| 318 | 7835459 | System and method for adapting to a change in constellation density while receiving a signal | |||
| 319 | 7830983 | Method to minimize degradation in a D-MPSK hierarchical modulation system | |||
| 320 | 7830217 | Method and system of vector signal generator with direct RF signal synthesis and parallel signal processing | |||
| 321 | 7822149 | Method to enable single frequency network optimization | |||
| 322 | 7804377 | Apparatus and method for producing an SBPSK-type modulated signal using piecewise linear phase transition shaping | |||
| 323 | 7787565 | System and method for performing baseband phase shifting in a Cartesian feedback system | |||
| 324 | 7778356 | Modulator and method for producing a modulated signal | |||
| 325 | 7773688 | Method, system, and apparatus for balanced frequency up-conversion, including circuitry to directly couple the outputs of multiple transistors | |||
| 326 | 7772936 | Polar feedback architecture | |||
| 327 | 7756215 | Radio communication base station apparatus and radio communication method in multi-carrier communications | |||
| 328 | 7751497 | Method to minimize compatibility error in hierarchical modulation using variable phase | |||
| 329 | 7750749 | Switching circuit, and a modulator, demodulator or mixer including such a circuit | |||
| 330 | 7746186 | Wideband quadrature imbalance compensation system and method | |||
| 331 | 7738590 | Radio communication apparatus capable of switching modulation schemes | |||
| 332 | 7737799 | Digital phase modulator and corresponding method | |||
| 333 | 7733193 | Systems and methods for DQPSK modulator control using selectively inserted dither tone | |||
| 334 | 7729410 | Procedure for BPSK demodulation corresponding to BPSK modulation with reduced envelope peaking | |||
| 335 | 7711064 | Method for digital wireless communications | |||
| 336 | 7702034 | Parallel processing for programmable wideband digital modulation | |||
| 337 | 7701306 | Error correction signal generating device and orthogonal modulator equipped with the error correction signal generating device | |||
| 338 | 7693235 | Reduced complexity coding system using iterative decoding | |||
| 339 | 7693230 | Apparatus and method of differential IQ frequency up-conversion | |||
| 340 | 7692507 | Apparatus and method of generating a plurality of synchronized radio frequency signals | |||
| 341 | 7684514 | Transmitter apparatus and wireless communication apparatus | |||
| 342 | 7680213 | Generating higher order modulation using QPSK modulations | |||
| 343 | 7671692 | Apparatus and method for compensating carrier feedthrough in quadrature modulation system | |||
| 344 | 7656966 | Method to increase performance of secondary data in a heirarchial modulation scheme | |||
| 345 | 7643574 | Transmitting apparatus and method in transmit diversity system | |||
2009 | |||||
| 346 | 7630456 | Method and/or apparatus to efficiently transmit broadband service content using low density parity code based coded modulation | |||
| 347 | 7630455 | Apparatus and method for digital wireless communication | |||
| 348 | 7630453 | Multi-level modulation method and system | |||
| 349 | 7627058 | Alternating quadratures differential binary phase shift keying modulation and demodulation method | |||
| 350 | 7623000 | Hybrid linear and polar modulation apparatus | |||
| 351 | 7620124 | Direct conversion receiver and receiving method | |||
| 352 | 7612627 | Integrated binary phase shift keying with silicon MEMS resonators | |||
| 353 | 7599446 | Modulation and demodulation based on hierarchical modulation | |||
| 354 | 7596187 | Digital modulation circuit and method as well as digital demodulation circuit and method | |||
| 355 | 7595702 | Modulation apparatus capable of correcting non-linearity of voltage controlled oscillator | |||
| 356 | 7586994 | Interface apparatus and method for data recovery and synchronization | |||
| 357 | 7586293 | Digital modulation circuit | |||
| 358 | 7579921 | On-off keying-7-phase shift keying modulation system and method for fiber communication | |||
| 359 | 7564923 | Frequency offset and method of offsetting | |||
| 360 | 7555061 | Optical communication device | |||
| 361 | 7551904 | Apparatus and method for high efficiency power amplification for a mobile communication system | |||
| 362 | 7539271 | System and method for multi-band ultra-wide band signal generators | |||
| 363 | 7535310 | Distortion compensation circuit | |||
| 364 | 7518460 | Amplitude modulation apparatus, amplitude limiting method, and computer-readable program | |||
| 365 | 7518459 | Harmonic-rejection modulation device | |||
| 366 | 7515651 | Parallel processing for programmable wideband digital modulation | |||
| 367 | 7512188 | Phase shift keying signaling for integrated circuits | |||
2008 | |||||
| 368 | 7469022 | Methods and apparatus for symmetrical phase-shift keying | |||
| 369 | 7463693 | Apparatus and method for full-diversity, full-rate space-time block coding for two transmit antennas | |||
| 370 | 7463108 | Active 90-degree phase shifter with LC-type emitter degeneration and quadrature modulator IC using the same | |||
| 371 | 7436902 | Multi-dimensional space Gray code maps for multi-dimensional phase modulation as applied to LDPC (Low Density Parity Check) coded modulation | |||
| 372 | 7430252 | Apparatus and method for WGIO phase modulation | |||
| 373 | 7424065 | Apparatus and method for ultra narrow band wireless communications | |||
| 374 | 7412006 | Method and apparatus for RF carrier feedthrough suppression | |||
| 375 | 7409013 | Super-orthogonal space-time trellis codes, and applications thereof | |||
| 376 | 7409012 | Modulator and signaling method | |||
| 377 | 7406134 | Very high data rate up-conversion in FPGAs | |||
| 378 | 7397865 | Systems and methods of using IQ modulation for calibration or measurement | |||
| 379 | 7362824 | Modulation method and radio communication system | |||
| 380 | 7359457 | Transmission apparatus, reception apparatus and digital radio communication method | |||
| 381 | 7359452 | Systems and methods for designing a high-precision narrowband digital filter for use in a communications system with high spectral efficiency | |||
| 382 | 7356093 | Enhanced wireless communication system and method thereof | |||
| 383 | 7352797 | Procedure for BPSK modulation with reduced envelope peaking | |||
| 384 | 7349491 | Frequency shaping stream signal processor | |||
| 385 | 7336728 | Method and apparatus for monitoring phase-shift keyed optical signals | |||
| 386 | 7333571 | Reduced complexity coding system using iterative decoding | |||
| 387 | 7319716 | Transmitter image suppression in TDD transceivers | |||
| 388 | 7315582 | Backward compatible DVB-S standard transmission system | |||
2007 | |||||
| 389 | 7298797 | Transmitter and receiver provided in wireless communication system using four transmitting antennas | |||
| 390 | 7280613 | Method to inject hierarchical data onto single carrier stream | |||
| 391 | 7280608 | Real time dynamic correlator | |||
| 392 | 7277480 | System and method of equalization of high speed signals | |||
| 393 | 7274754 | Method and apparatus for frequency division multiplexing | |||
| 394 | 7274753 | Method of implementing modulation and modulator | |||
| 395 | 7269229 | Reduced memory architecture for edge modulator | |||
| 396 | 7260156 | Modulation identification device | |||
| 397 | 7248647 | Radio telecommunications system operative by interactive determination of soft estimates, and a corresponding method | |||
| 398 | 7248646 | Digital reconfigurable core for multi-mode base-band transmitter | |||
| 399 | 7242726 | Parallel concatenated code with soft-in soft-out interactive turbo decoder | |||
| 400 | 7236543 | Method and apparatus of 8PSK modulation | |||
| 401 | 7233617 | System and method of equalization of high speed signals | |||
| 402 | 7230998 | Method to increase performance of secondary data in a hierarchical modulation scheme | |||
| 403 | 7224237 | Modulator and correction method thereof | |||
| 404 | 7212585 | Quadrature modulation transmitter | |||
| 405 | 7206356 | Wireless transmitter with reduced power consumption | |||
| 406 | 7197087 | System and method for differential IQ delay compensation in a communications system utilizing adaptive AQM compensation | |||
| 407 | 7187728 | Coding method and use of a receiver with a convolutional decoder | |||
| 408 | 7180960 | Phase error corrector and method | |||
| 409 | 7177371 | Methods and apparatus for transmitting and receiving data over a communications network in the presence of interference | |||
| 410 | 7177368 | Data transfer using frequency notching of radio-frequency signals | |||
| 411 | 7173979 | Method and device for transmitting information symbols using a plurality of carriers and method and device for receiving information symbols | |||
| 412 | 7167527 | System and method for multi-symbol interfacing | |||
| 413 | 7164729 | Differential transmitter diversity technique for wireless communications | |||
| 414 | 7161979 | Digital filter for IQ-generation, noise shaping and neighbor channel suppression | |||
2006 | |||||
| 415 | 7154960 | Method of determining the capacity of each transmitter antenna in a multiple input/multiple output (MIMO) wireless system | |||
| 416 | 7142613 | Methods, systems and devices for generating pulse shapes | |||
| 417 | 7136427 | Method and apparatus for adaptive modulation using space-time block code matrix | |||
| 418 | 7133462 | Method and apparatus for determining modulation scheme for retransmission in a communication system | |||
| 419 | 7133461 | Stream transmission method and device | |||
| 420 | 7130358 | Method and apparatus for rearranging codeword sequence in a communication system | |||
| 421 | 7120204 | Waveform generator operable in accordance with a plurality of band limitation characteristics | |||
| 422 | 7120202 | Wireless communication apparatus | |||
| 423 | 7116725 | Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems | |||
| 424 | 7106807 | Method for estimating the frequency shift of a CPFSK signal | |||
| 425 | 7103110 | Dual phase pulse modulation encoder circuit | |||
| 426 | 7099401 | Discrete multitone interleaver | |||
| 427 | 7098754 | Fractional-N offset phase locked loop | |||
| 428 | 7095801 | Phase adjustable polyphase filters | |||
| 429 | 7095795 | Multi-rate transmission apparatus | |||
| 430 | 7092453 | Automatic method for power control and phy mode switching control in adaptive phy mode systems | |||
| 431 | 7085331 | Apparatus and method for processing data using COPSK of wireless communication system | |||
| 432 | 7079589 | Serial digital communication superimposed on a digital signal over a single wire | |||
| 433 | 7072418 | Method and apparatus for performing Nyquist folding frequency modulation | |||
| 434 | 7072416 | Transmitting/receiving device and transmitting/receiving method | |||
| 435 | 7068728 | Carrierless backwards compatible data neworking transmitter, receiver, and signal format | |||
| 436 | 7065156 | Hopped delay diversity for multiple antenna transmission | |||
| 437 | 7065153 | High speed monolithic microwave integrated circuit (MMIC) quadrature phase shift keying (QPSK) and quadrature amplitude modulation (QAM) modulators | |||
| 438 | 7061989 | Fully digital transmitter including a digital band-pass sigma-delta modulator | |||
| 439 | 7061341 | System for highly linear phase modulation | |||
| 440 | 7058137 | Phase shifters for peak-to-average power ratio reduction in multi-carrier communication systems | |||
| 441 | 7054383 | Method for the determination of the average long-term power of digital modulated signal | |||
| 442 | 7054382 | Modulator of phase shift keying (PSK) type | |||
| 443 | 7054381 | Apparatus for TFCI mapping in wireless communication mobile station and method thereof | |||
| 444 | 7046618 | Bridged ultra-wideband communication method and apparatus | |||
| 445 | 7042960 | Low order spur cancellation mixer topologies | |||
| 446 | 7042957 | Method and communication system for transmitting information with the aid of a multicarrier method | |||
| 447 | 7039122 | Method and apparatus for generating a composite signal | |||
| 448 | 7031403 | Phase shift keying modulation including a data converter for converting an input data signal having 3 bits long into two ternary converted data signals | |||
| 449 | 7031397 | Communication system with reduced power variation and method therefor | |||
| 450 | 7027525 | Digital transmission method for bandwidth and bit rate flexibility | |||
| 451 | 7020216 | Method for adjusting a phase angle of a phase modifier of a transmitting device | |||
| 452 | 7012968 | Apparatus for detecting and adjusting transmission power of CDMA system | |||
| 453 | 7003050 | Radio transmitter, radio receiver, and multilevel modulation communication system | |||
| 454 | 6996191 | Efficient accurate controller for envelope feedforward power amplifiers | |||
| 455 | 6993085 | Encoding and decoding methods and devices and systems using them | |||
2005 | |||||
| 456 | 6963622 | Bit labeling for amplitude phase shift constellation used with low density parity check (LDPC) codes | |||
| 457 | 6959054 | Filter bank and receiver for processing continuous phase modulated signals | |||
| 458 | 6956910 | Fast transmitter based on table lookup | |||
| 459 | 6952456 | Ultra wide band transmitter | |||
| 460 | 6952445 | Symbol constellations having second-order statistics with cyclostationary phase | |||
| 461 | 6940920 | Multiplier arrangement, signal modulator and transmitter | |||
| 462 | 6940840 | Apparatus for adaptive reverse power control for spread-spectrum communications | |||
| 463 | 6928121 | Digital transmitter with constrained envelope and spectral regrowth over a plurality of carriers | |||
| 464 | 6928101 | FMOD transceivers including continuous and burst operated TDMA, FDMA, spread spectrum CDMA, WCDMA and CSMA | |||
| 465 | 6925133 | Apparatus and method for M-ary demodulation in a digital communication system | |||
| 466 | 6909337 | Noncoherent pulse position and phase shift keying transmission/reception system and a transmission/reception signal processing method therefor | |||
| 467 | 6898257 | Transmitter device having a modulation closed loop | |||
| 468 | 6891445 | Phase modulator | |||
| 469 | 6888898 | Random code for device identification | |||
| 470 | 6885652 | Code division multiple access (CDMA) communication system | |||
| 471 | 6885322 | Apparatus and method for transmitter phase shift compensation | |||
| 472 | 6882679 | Extension of wireless local area network communication system to accommodate higher data rates while preserving legacy receiver features | |||
| 473 | 6873661 | .pi./4 QPSK modulator | |||
| 474 | 6873645 | Automatic power control system for a code division multiple access (CDMA) communications system | |||
| 475 | 6873218 | Frequency modulator using a waveform generator | |||
| 476 | 6868126 | Modulating a digital signal with narrow spectrum and substantially constant envelope | |||
| 477 | 6845083 | Multi-standard transmitter system and method for a wireless communication system | |||
2004 | |||||
| 478 | 6831905 | Spread spectrum system assigning information signals to message-code signals | |||
| 479 | 6829317 | Signalling method in a radio communication system, and transmitters, receivers and repeaters for implementing the method | |||
| 480 | 6826389 | Transmitter and method of generating a transmission signal | |||
| 481 | 6826237 | Radio transmitter | |||
| 482 | 6819708 | OCQPSK modulator and modulating method using 1-bit input FIR filter | |||
| 483 | 6816473 | Method for adaptive forward power control for spread-spectrum communications | |||
| 484 | 6804311 | Diversity detection for WCDMA | |||
| 485 | 6801516 | Spread-spectrum system for assigning information signals having different data rates | |||
| 486 | 6798844 | Correction of phase and amplitude imbalance of I/Q modulator | |||
| 487 | 6788662 | Method for adaptive reverse power control for spread-spectrum communications | |||
| 488 | 6774740 | System for highly linear phase modulation | |||
| 489 | 6771711 | Digital GMSK filter | |||
| 490 | 6760393 | Spread-spectrum GMSK/M-ary radio with oscillator frequency correction | |||
| 491 | 6754474 | Radio transmission system | |||
| 492 | 6754287 | Method and apparatus for producing a modulated signal | |||
| 493 | 6748021 | Cellular radio communications system | |||
| 494 | 6744825 | Method and system for quadrature modulation and digital-to-analog conversion | |||
| 495 | 6744809 | Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system | |||
| 496 | 6738359 | Communication format control method and apparatus | |||
| 497 | 6731693 | System of and method for compensating a baseband signal to reduce third order modulation distortion | |||
| 498 | 6724851 | FIR chip for use in a wireless subscriber unit | |||
| 499 | 6724269 | PSK transmitter and correlator receiver for UWB communications system | |||
| 500 | 6721369 | Composite BPSK/AM-BPSK based spectral suppression of out-of-band energy from saturated RF amplifier | |||
| 501 | 6721301 | Centroid tracking for spread-spectrum communications | |||
| 502 | 6714607 | Joint demodulation using a viterbi equalizer having an adaptive total number of states | |||
| 503 | 6711218 | System and method for received signal decoding | |||
| 504 | 6707857 | Reference signal pre-distortion for transmitter with frequency synthesizer based phase encoding | |||
| 505 | 6707805 | Method for initial power control for spread-spectrum communications | |||
| 506 | 6700928 | Tetrahedron modem | |||
| 507 | 6700449 | Saw oscillation circuit | |||
| 508 | 6697350 | Adaptive vector correlator for spread-spectrum communications | |||
| 509 | 6693969 | Phase-locked loop methods and structures for generating modulated communication signals with nonconstant envelopes | |||
| 510 | 6683917 | Base band signal processing circuit capable of improving both noise characteristic and distortion characteristic | |||
| 511 | 6680981 | .pi./4 shift QPSK modulator and communication device | |||
| 512 | 6674812 | High IF frequencies with a lower frequency logic based FSK modulation selecting a harmonic alias and demodulation using sub-sampling techniques | |||
| 513 | 6674791 | Automatic power control system for a code division multiple access (CDMA) communications system | |||
| 514 | 6674788 | Automatic power control system for a code division multiple access (CDMA) communications system | |||
2003 | |||||
| 515 | 6668024 | Radiofrequency transmitter with a high degree of integration and possibly with self-calibrating image deletion | |||
| 516 | 6654426 | Correction of nonlinearity of I/Q modulator | |||
| 517 | 6650695 | Wireless digital data transmission from a passive transceiver | |||
| 518 | 6633600 | Traffic lights in a code division multiple access (CDMA) modem | |||
| 519 | 6631169 | Apparatus and method for GMSK baseband modulation based on a reference phase to be simplified | |||
| 520 | 6628727 | Apparatus and method for performing .pi./4-DQPSK baseband modulation based on a signal mapping to be simplified | |||
| 521 | 6621945 | Modulation scheme for NRZ signals and transmitter | |||
| 522 | 6621874 | Method and radio station for data transmission | |||
| 523 | 6611567 | Method and apparatus for pulse shaping | |||
| 524 | 6608669 | Quadrature processed LIDAR system | |||
| 525 | 6606357 | Carrier injecting waveform-based modulation scheme for reducing satellite transponder power requirements and earth terminal antenna size | |||
| 526 | 6600382 | Microwave phase modulator | |||
| 527 | 6587516 | Subscriber unit producing a modulated digital frequency | |||
| 528 | 6560296 | Method and apparatus for modulating digital data | |||
| 529 | 6553080 | Constant envelope modulation communication system | |||
| 530 | 6549590 | Current-controlled carrier tracking filter for improved spurious signal suppression | |||
| 531 | 6549564 | Random access in a mobile telecommunications system | |||
| 532 | 6546261 | Method and apparatus for configuring communication apparatus in accordance with communication services and protocols | |||
| 533 | 6539131 | Optical MSK modulator | |||
| 534 | 6539064 | Multiple data rate filtered modulation system for digital data | |||
| 535 | 6535561 | Dual-mode modulation systems and methods including oversampling of narrow bandwidth signals and DC offset compensation | |||
| 536 | 6529559 | Reduced soft output information packet selection | |||
| 537 | 6522687 | Data transmitter and receiver of a DS-CDMA communication system | |||
| 538 | 6519279 | Transceiver circuitry, portable communication device and method for performing radio communication | |||
| 539 | 6515526 | Phase fluctuation generation | |||
| 540 | 6512798 | Digital communication system of orthogonal modulation type | |||
2002 | |||||
| 541 | 6496542 | Digital communication system | |||
| 542 | 6487242 | Method and apparatus for VCO modulation in a communication system | |||
| 543 | 6480553 | Gaussian frequency-shift keying transciever for ISM wideband communication | |||
| 544 | 6473469 | Local communication system and apparatus for use therein | |||
| 545 | 6459742 | Digital modulation process and modulator implementing the process | |||
| 546 | 6456668 | QPSK modulated backscatter system | |||
| 547 | 6456608 | Adaptive vector correlator using weighting signals for spread-spectrum communications | |||
| 548 | 6449317 | Digital synthesizer | |||
| 549 | 6445749 | FMOD transceivers including continuous and burst operated TDMA, FDMA, spread spectrum CDMA, WCDMA, and CSMA | |||
| 550 | 6445746 | IS-136+ slot formation | |||
| 551 | 6438176 | Digital gaussian frequency shift keying modulator | |||
| 552 | 6434204 | Method and system for DC offset correction of a quadrature modulated RF signal | |||
| 553 | 6434199 | 2N-QAM macrocell | |||
| 554 | 6430232 | Phase constellation modulator | |||
| 555 | 6430212 | Spread-spectrum GMSK/M-ary radio | |||
| 556 | 6424682 | BPSK encoder circuit | |||
| 557 | 6421379 | Digital filter with adaptive coefficients | |||
| 558 | 6420940 | Transmitter with a phase modulator and a phase locked loop | |||
| 559 | 6415002 | Phase and amplitude modulation of baseband signals | |||
| 560 | 6396884 | Automatic frequency control circuit | |||
| 561 | 6396880 | .pi./4 DQPSK encoder and modulator | |||
| 562 | 6396869 | Modulation apparatus and method using zero-crossing detection | |||
| 563 | 6392493 | Fractional-N frequency synthesizer | |||
| 564 | 6389081 | Signal transmission equipment | |||
| 565 | 6385256 | Method and arrangement for signal modulation | |||
| 566 | 6385233 | Unbalanced quadrature waveform | |||
| 567 | 6381288 | Method and apparatus for recovering data from a differential phase shift keyed signal | |||
| 568 | 6381264 | Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system | |||
| 569 | 6373903 | Apparatus and method for increasing the effective data rate in communication systems utilizing phase modulation | |||
| 570 | 6373901 | Method and apparatus for conditioning modulated signals using window expansion | |||
| 571 | 6373880 | Frequency modulation circuit | |||
| 572 | 6370204 | Method and apparatus for performing digital fractional minimum shift key modulation for a very small aperture terminal | |||
| 573 | 6362701 | Digital communications modulator having an interpolator upstream of a linearizer and method therefor | |||
| 574 | 6359936 | Modulator employing a memory reduction circuit | |||
| 575 | 6359523 | Orthogonal modulator, mobile terminal and communication system | |||
| 576 | 6347233 | Digital waveform generator apparatus and method therefor | |||
| 577 | 6345173 | Frequency modulator | |||
| 578 | 6342821 | Device capable of QPSK modulation and phase compensator for the same | |||
| 579 | 6341023 | Multiple level modulation in a wavelength-division multiplexing (WDM) systems | |||
| 580 | 6337606 | Digital communications modulator having a modulation processor which supports high data rates | |||
2001 | |||||
| 581 | 6320900 | Methods and arrangements for transmitting high speed data over reduced bandwidth communication resources | |||
| 582 | 6317452 | Method and apparatus for wireless spread spectrum communication with preamble sounding gap | |||
| 583 | 6307894 | Power amplification using a direct-upconverting quadrature mixer topology | |||
| 584 | 6307441 | Shape modulation transmit loop with digital frequency control and method for same | |||
| 585 | 6301310 | Efficient implementation for systems using CEOQPSK | |||
| 586 | 6301295 | AM modulated wave eliminating circuit | |||
| 587 | 6298099 | Constant envelope modulation communication system | |||
| 588 | 6295473 | Digital delay line receiver for use with an implantable medical device | |||
| 589 | 6295273 | Phase modulation multiplexing transmission unit and phase modulation multiplexing method | |||
| 590 | 6289056 | Broadband multicarrier modulator and corresponding programming method | |||
| 591 | 6288619 | Bias circuit for use in quadrature modulator | |||
| 592 | 6285251 | Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control | |||
| 593 | 6282228 | Spread spectrum codes for use in communication | |||
| 594 | 6272168 | Code sequence generator in a CDMA modem | |||
| 595 | 6271950 | Optical differential phase shift keying transmission system having multiplexing, routing and add/replace capabilities | |||
| 596 | 6259747 | IQ modulator, and associated method | |||
| 597 | 6255912 | Phase lock loop used as up converter and for reducing phase noise of an output signal | |||
| 598 | 6246715 | Data transmitter and receiver of a DS-CDMA communication system | |||
| 599 | 6243422 | Waveform shaping method and equipment | |||
| 600 | 6242990 | Quadrature phase shift keyed/bi-phase shift keyed modulator | |||
| 601 | 6240142 | Quadrature modulator and demodulator | |||
| 602 | 6239666 | Uniform amplitude modulator | |||
| 603 | 6233293 | Current-controlled carrier tracking filter for improved spurious signal suppression | |||
| 604 | 6232843 | Plural coupled microwave oscillators providing phase shifted output signals | |||
| 605 | 6229843 | Pilot adaptive vector correlator | |||
| 606 | 6225935 | Biphase-encoded signal processing employing passive and/or semi-passive transistor circuits | |||
| 607 | 6219374 | Structure of a coherent dual channel QPSK transceiver using pilot symbols in a code division multiple access system | |||
| 608 | 6215778 | Bearer channel modification system for a code division multiple access (CDMA) communication system | |||
| 609 | 6212174 | Capacity management method for a code division multiple access (CDM) communication system | |||
| 610 | 6208698 | Quadrature modulator imbalance estimator and modulator stage using it | |||
| 611 | 6205170 | Transmission/reception unit with bidirectional equalization | |||
| 612 | 6201452 | Systems and methods for converting a stream of complex numbers into a modulated radio power signal | |||
| 613 | 6201451 | MSK modulator and MSK modulation method of transmitting data at high speed and digital signal generator suitable for MSK modulation | |||
| 614 | 6194977 | State variable-based table-driven modulation signal generation | |||
| 615 | 6185259 | Transmitter/receiver for GMSK and offset-QAM | |||
| 616 | 6181674 | Method and apparatus for sharing transmit shaping filters among phase shifted signals | |||
| 617 | 6175599 | Method and apparatus for transmitting and receiving digital data over a bandpass channel | |||
2000 | |||||
| 618 | 6167096 | Transmitting circuit for use in code-division multiple access system and frequency-division multiple access system | |||
| 619 | 6163231 | Millimeter wave modulator and transmitter | |||
| 620 | 6163230 | Phase-shift keying electronic circuit with distributed structure | |||
| 621 | 6157619 | Code division multiple access (CDMA) communication system | |||
| 622 | 6151366 | Method and apparatus for modulating signals | |||
| 623 | 6148040 | Precoded gaussian minimum shift keying carrier tracking loop | |||
| 624 | 6148022 | NRZ and biphase-L formatted quadriphase modulated GPS transmission method | |||
| 625 | 6147563 | Coupled cavity oscillator producing output signals with a constant phase difference | |||
| 626 | 6141389 | Digital tuner | |||
| 627 | 6137826 | Dual-mode modulation systems and methods including oversampling of narrow bandwidth signals | |||
| 628 | 6125266 | Dual band architectures for mobile stations having transmitter linearization feedback | |||
| 629 | 6118827 | Apparatus for providing increased data rates within existing modulation systems | |||
| 630 | 6115428 | Apparatus for and method of generating .pi.-/N-shifted N-differential encoded phase shift keying modulation signals | |||
| 631 | 6101225 | Method and apparatus for performing a modulation | |||
| 632 | 6100827 | Modulation systems and methods that compensate for DC offset introduced by the digital-to-analog converter and/or the low pass filter thereof | |||
| 633 | 6097765 | Method and apparatus for performing digital fractional minimum shift key modulation for a very small aperture terminal | |||
| 634 | 6097259 | Modulator and modulation method for orthogonally modulating digital baseband signals | |||
| 635 | 6091789 | Method and device for phase modulated signals | |||
| 636 | 6091780 | Transmitting and receiving radio signals | |||
| 637 | 6091303 | Method and apparatus for reducing oscillator noise by noise-feedforward | |||
| 638 | 6084921 | Transmit method and system for Ka band transmissions | |||
| 639 | 6081550 | Method of testing clock paths and network elements for carrying out the method | |||
| 640 | 6078629 | Digital synthesizer | |||
| 641 | 6078628 | Non-linear constant envelope modulator and transmit architecture | |||
| 642 | 6075827 | DQPSK mapping circuit | |||
| 643 | 6072785 | Differential PSK signalling in CDMA networks | |||
| 644 | 6072770 | Method and system providing unified DPSK-PSK signalling for CDMA-based satellite communications | |||
| 645 | 6069537 | Double mode modulator | |||
| 646 | 6052701 | Methods of performing interpolation using frequency shifting operations and filters | |||
| 647 | 6047029 | Post-filtered delta sigma for controlling a phase locked loop modulator | |||
| 648 | 6046643 | Radio-frequency signal generator | |||
| 649 | 6034999 | Burst signal transmitter capable of producing correct transmission output in initial burst signal | |||
| 650 | 6031865 | Rapidly decorrelating spreading sequences for DS-CDMA transceivers | |||
| 651 | 6028493 | Elimination of bandpass filter after quadrature modulator in modulation synthesizer circuit | |||
| 652 | 6025758 | Method and apparatus for performing digital data signal modulation | |||
| 653 | 6014065 | Multi-phase modulator having automatic compensators for offsets of orthogonal adjustment | |||
1999 | |||||
| 654 | 6008703 | Digital compensation for wideband modulation of a phase locked loop frequency synthesizer | |||
| 655 | 5999570 | Transmission apparatus, sending apparatus, and receiving apparatus, and transmission method | |||
| 656 | 5999297 | Method of putting binary data on an optical carrier wave, and a transmission system using the method | |||
| 657 | 5995541 | Method and apparatus for self-calibration and testing of ZPSK transmitter/receiver IC's | |||
| 658 | 5991332 | Adaptive matched filter and vector correlator for a code division multiple access (CDMA) modem | |||
| 659 | 5991329 | Automatic power control system for a code division multiple access (CDMA) communications system | |||
| 660 | 5990755 | Phase modulator efficiently utilizing waveform storing section | |||
| 661 | 5987072 | Phase modulation scheme and apparatus | |||
| 662 | 5986512 | .SIGMA.-.DELTA. modulator-controlled phase-locked-loop circuit | |||
| 663 | 5986483 | Direct digital frequency systhesizer | |||
| 664 | 5978823 | Methods and apparatus for implementing and controlling a digital modulator | |||
| 665 | 5978420 | Methods and apparatus for implementing a digital modulator | |||
| 666 | 5963586 | Method and apparatus for parallel noncoherent correlation of a spread spectrum signal | |||
| 667 | 5953379 | Current-controlled carrier tracking filter for improved spurious signal suppression | |||
| 668 | 5953370 | Apparatus for receiving and correlating a spread spectrum signal | |||
| 669 | 5949826 | Data transmission and reception system | |||
| 670 | 5946356 | Method and apparatus for data transmission within a broad-band communications system | |||
| 671 | 5943345 | AM multiplexing broadcast apparatus | |||
| 672 | 5942955 | Quasi-GMSK modulator | |||
| 673 | 5933465 | Control signal detection method with calibration error and subscriber unit therewith | |||
| 674 | 5930303 | Digital modulation employing single sideband with suppressed carrier | |||
| 675 | 5930299 | Digital modulator with compensation and method therefor | |||
| 676 | 5923223 | Transmission system in which either an in-phase or quadrature component of a transmitted signal is delayed prior to modulation | |||
| 677 | 5920237 | Constant envelope quadrature-quadrature amplitude modulation system | |||
| 678 | 5912919 | Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system | |||
| 679 | 5903609 | Transmission system using transmitter with phase modulator and frequency multiplier | |||
| 680 | 5901179 | Waveform shaping method and equipment | |||
| 681 | 5896421 | Use of low pass filter and equalizer for noise reduction in direct up-conversion schemes | |||
| 682 | 5894249 | Digital and analog modulator in a simplified circuit structure | |||
| 683 | 5892798 | Modulated clock MSK modulator for high data rate applications | |||
| 684 | 5890057 | Modulation signal calibration between modem and radio using loopback | |||
| 685 | 5883922 | FSK communication device for digital information | |||
| 686 | 5881109 | Pulse shaping filter for .pi./4-shift QPSK modulator | |||
| 687 | 5881100 | Method and apparatus for coherent correlation of a spread spectrum signal | |||
| 688 | 5878335 | Composite direct digital synthesizer | |||
| 689 | 5875213 | GMSK communication device test system | |||
| 690 | 5867537 | Balanced tranversal I,Q filters for quadrature modulators | |||
| 691 | 5867072 | Biphase modulator with balun design | |||
| 692 | 5864492 | Randomized digital waveshape samples from a look up table | |||
| 693 | 5859869 | Low cost binary phase shift keying modulation transmitter system | |||
| 694 | 5856998 | Method and apparatus for correlating a continuous phase modulated spread spectrum signal | |||
1998 | |||||
| 695 | 5854813 | Multiple access up converter/modulator and method | |||
| 696 | 5847622 | Quadrature phase shift keying modulating apparatus | |||
| 697 | 5847619 | Method and system for calibrating a quadrature phase modulator | |||
| 698 | 5844449 | Gilbert cell phase modulator having two outputs combined in a balun | |||
| 699 | 5838797 | Secure communication by encryption/decryption of vector at PSK modulation/detection stage | |||
| 700 | 5838727 | Method and apparatus for transmitting and receiving digital data over a bandpass channel | |||
| 701 | 5838208 | Modulation of transmission data signal in sychronous with transmission clock signal | |||
| 702 | 5834986 | Direct 2nd derivative synthesis method for controlling sidelobe energy in an MSK modulated signal | |||
| 703 | 5834985 | Digital continuous phase modulation for a DDS-driven phase locked loop | |||
| 704 | 5832028 | Method and apparatus for coherent serial correlation of a spread spectrum signal | |||
| 705 | 5832022 | Method and apparatus for controlling the modulation index of continuous phase modulated (CPM) signals | |||
| 706 | 5831488 | Digital phase modulator formed with a fixed-point digital signal processor | |||
| 707 | 5825820 | Waveform shaping method and equipment | |||
| 708 | 5825257 | GMSK modulator formed of PLL to which continuous phase modulated signal is applied | |||
| 709 | 5822366 | Transceiver and method for generating and processing complex I/Q-signals | |||
| 710 | 5822362 | Sinusoidal phase modulation method and system | |||
| 711 | 5818867 | QPSK/QBL-MSK waveform enhancement | |||
| 712 | 5815537 | Wireless digital communication device, and a pulse shaping network | |||
| 713 | 5815531 | Transmitter for encoded data bits | |||
| 714 | 5812612 | Method and apparatus for transmitting an intermittent signal in a ratio communication system | |||
| 715 | 5812605 | Multi-channel digital transceiver and method | |||
| 716 | 5812604 | Constant envelope continuous phase frequency shift key modulation apparatus and method at radio frequencies | |||
| 717 | 5812184 | Transmission of frame-to-frame reversed polarity signals in a two-way cable TV conversion system | |||
| 718 | 5805640 | Method and apparatus for conditioning modulated signals for digital communications | |||
| 719 | 5802104 | Method and apparatus for vector modulation in a communication system | |||
| 720 | 5799010 | Code division multiple access (CDMA) communication system | |||
| 721 | 5796783 | Digital transmission system | |||
| 722 | 5796782 | Digital modulator with Root-Nyquist filter | |||
| 723 | 5796780 | Coherent modulation of CPM signals | |||
| 724 | 5796776 | Code sequence generator in a CDMA modem | |||
| 725 | 5793800 | Method and apparatus for minimizing phase error in a transmitter section of a transceiver | |||
| 726 | 5784413 | Direct digital synthesis frequency-agile QPSK modulator | |||
| 727 | 5784412 | Transmitter and method for transmitting a modulated wave with variable envelope | |||
| 728 | 5784402 | FMOD transceivers including continuous and burst operated TDMA, FDMA, spread spectrum CDMA, WCDMA and CSMA | |||
| 729 | 5783974 | Digital interpolation up sampling circuit and digital modulator using same | |||
| 730 | 5778027 | Method and apparatus for determining signal components using digital signal processing | |||
| 731 | 5771442 | Dual mode transmitter | |||
| 732 | 5768317 | Equalization filter compensating for distortion in a surface acoustic wave device | |||
| 733 | 5764113 | Re-sampling circuit and modulator using same | |||
| 734 | 5764094 | Level shift circuit for analog signal and signal waveform generator including the same | |||
| 735 | 5757847 | Method and apparatus for decoding a phase encoded signal | |||
| 736 | 5754585 | Method and apparatus for serial noncoherent correlation of a spread spectrum signal | |||
| 737 | 5754584 | Non-coherent spread-spectrum continuous-phase modulation communication system | |||
| 738 | 5751198 | Angular modulator with a phase variation divided and integrated | |||
| 739 | 5748687 | Spreading code sequence acquisition system and method that allows fast acquisition in code division multiple access (CDMA) systems | |||
| 740 | 5748679 | Modulated clock MSK modulator for high data rate applications | |||
| 741 | 5745527 | Encoding method for constellation symbols of an RF transmitter | |||
| 742 | 5745526 | Radio transmitters and methods of operation | |||
| 743 | 5745523 | Multi-mode signal processing | |||
| 744 | 5736840 | Phase shifter and communication system using the phase shifter | |||
| 745 | 5729182 | Device for continuous phase modulation by frequency synthesizer with phase-locked loop | |||
| 746 | 5727023 | Apparatus for and method of speech digitizing | |||
| 747 | 5705945 | Synthesizable architecture for all-digital minimal jitter frequency synthesizer | |||
1997 | |||||
| 748 | 5701106 | Method and modulator for modulating digital signal to higher frequency analog signal | |||
| 749 | 5696795 | Offset quadrature phase shift keyed modulation circuit | |||
| 750 | 5696794 | Method and apparatus for conditioning digitally modulated signals using channel symbol adjustment | |||
| 751 | 5692007 | Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation | |||
| 752 | 5680417 | Method and apparatus for providing biphase modulation | |||
| 753 | 5680414 | Synchronization apparatus and method for spread spectrum receiver | |||
| 754 | 5663691 | Estimator for estimating an operating defect in a quadrature modulator, and a modulation stage using the estimator | |||
| 755 | 5659574 | Multi-bit correlation of continuous phase modulated signals | |||
| 756 | 5657356 | Control signal detection method with calibration error and subscriber unit therewith | |||
| 757 | 5657326 | Radio based collision detection for wireless communication system | |||
| 758 | 5652552 | Phase modulator | |||
| 759 | 5650714 | Orthogonal signal generation system | |||
| 760 | 5648982 | Spread spectrum transmitter | |||
| 761 | 5646962 | Apparatus for reducing electromagnetic radiation from a differentially driven transmission line used for high data rate communication in a computerized tomography system | |||
| 762 | 5644602 | Direct digital frequency synthesizer for use in a subscriber unit of a wireless digital communication system | |||
| 763 | 5638405 | Dual-mode baseband controller for radio-frequency interfaces relating to digital cordless telephones | |||
| 764 | 5633893 | Digital modulation method with controlled envelope variation | |||
| 765 | 5629961 | Transmitter apparatus for mobile satellite communication terminal having an envelope equalizer | |||
| 766 | 5629956 | Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal | |||
| 767 | 5629655 | Integrated distributed RC low-pass filters | |||
| 768 | 5628059 | DC offset circuit for cartesian loop | |||
| 769 | 5627856 | Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators | |||
| 770 | 5627499 | Digital modulator and upconverter having single-bit delta-sigma data converters | |||
| 771 | 5610940 | Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal | |||
| 772 | 5604770 | PI/4 DQPSK modulation with coarse mapper precession and fine filter precession | |||
| 773 | 5600676 | Modulation scheme with low envelope variation for mobile radio by constraining a maximum modulus of a differential phase angle | |||
| 774 | 5598437 | Multichannel frequency and phase variable radio frequency simulator | |||
| 775 | 5596361 | Two-way cable TV conversion system for data transmission over a dedicated frequency band | |||
1996 | |||||
| 776 | 5590155 | Equipment for generating a transmit signal from first and second digital signals | |||
| 777 | 5589872 | Compatible interactive TV and multimedia delivery system two-way cable TV conversion system for data transmission over a dedicated frequency band | |||
| 778 | 5574409 | Apparatus and method for adjusting microwave BPSK modulator and mixer | |||
| 779 | 5561401 | Quadrature modulator operable in quasi-microwave band of digital communication system | |||
| 780 | 5559475 | Frequency synthesizer for synthesizing signals of a variety of frequencies by cross modulation | |||
| 781 | 5557641 | Charge-coupled-device based transmitters and receivers | |||
| 782 | 5550579 | Two-way cable tv conversion system | |||
| 783 | 5548541 | Finite impulse response filter for modulator in digital data transmission system | |||
| 784 | 5546428 | Differentially encoding quadrature phase shift keying modulation method and apparatus thereof | |||
| 785 | 5541953 | Data transmission method and apparatus for use in low BW:R.sub.s applications | |||
| 786 | 5535247 | Frequency modifier for a transmitter | |||
| 787 | 5530722 | Quadrature modulator with integrated distributed RC filters | |||
| 788 | 5528631 | .pi./4 shifted DQPSK modulator | |||
| 789 | 5523726 | Digital quadriphase-shift keying modulator | |||
| 790 | 5512865 | Digital oversampled quadrature modulator | |||
| 791 | 5506546 | Method and apparatus for generating transmitting wave | |||
| 792 | 5504465 | Microwave modulator having adjustable couplers | |||
| 793 | 5504461 | High speed slotline BPSK modulator | |||
| 794 | 5502745 | BPSK modulator for a digital signal transmitter | |||
| 795 | 5495504 | Signal generating apparatus | |||
| 796 | 5491457 | F-modulation amplification | |||
| 797 | 5483554 | Modulator especially for digital cellular telephone system | |||
| 798 | 5483549 | Receiver having for charge-coupled-device based receiver signal processing | |||
| 799 | 5481231 | Lumped element four port coupler | |||
1995 | |||||
| 800 | 5473280 | Modulation/demodulation method and system for realizing quadrature modulation/demodulation technique used in digital mobile radio system with complex signal processing | |||
| 801 | 5471499 | Minimum shift keyed saw device and method | |||
| 802 | 5467373 | Digital frequency and phase modulator for radio transmission | |||
| 803 | 5463355 | Wideband vector modulator which combines outputs of a plurality of QPSK modulators | |||
| 804 | 5455544 | Low power consumption binary phase-shift-keyed (BPSK) modulator using reflective electronic switching techniques | |||
| 805 | 5455543 | Low power consumption binary phase shift keyed (BPSK) modulator using absorptive electronic switching techniques | |||
| 806 | 5446760 | Programmable digital pulse shaping phase modulator | |||
| 807 | 5446466 | Radio beacon phase modulator | |||
| 808 | 5444420 | Numerically controlled phase lock loop synthesizer/modulator and method | |||
| 809 | 5444415 | Modulation and demodulation of plural channels using analog and digital components | |||
| 810 | 5432483 | Digital quadrature modulator and method for testing the same | |||
| 811 | 5430415 | Modulator capable of decreasing consumption of electric power | |||
| 812 | 5428643 | Method of, and transmitter for, transmitting a digital signal | |||
| 813 | 5428320 | Biphase modulator and method without matching elements | |||
| 814 | 5425055 | Digital radio modulator | |||
| 815 | 5418819 | Transmitting apparatus and receiving apparatus based on phase modulation method | |||
| 816 | 5416803 | Process for digital transmission and direct conversion receiver | |||
| 817 | 5412352 | Modulator having direct digital synthesis for broadband RF transmission | |||
| 818 | 5412351 | Quadrature local oscillator network | |||
| 819 | 5406584 | Time shift keying digital communications system | |||
| 820 | 5399984 | Digital frequency generation device | |||
| 821 | 5382924 | Continuous phase frequency shift keying modulator | |||
| 822 | 5379322 | Baseband signal generator for digital modulator | |||
1994 | |||||
| 823 | 5373532 | .pi./4 quadrature phase shift keying modulator | |||
| 824 | 5371481 | Tuning techniques for I/Q channel signals in microwave digital transmission systems | |||
| 825 | 5369378 | Digital DQPSK modulator | |||
| 826 | 5367271 | Quadrature modulator having phase shift and amplitude compensation circuits | |||
| 827 | 5363410 | Modulation circuit for a digital radio communications apparatus using a phase shifted DQPSK modulation system | |||
| 828 | 5361047 | PI/4 shift QPSK modulator and communication apparatus used therewith | |||
| 829 | 5351016 | Adaptively self-correcting modulation system and method | |||
| 830 | 5325396 | Subscriber unit for wireless digital subscriber communication system | |||
| 831 | 5321514 | Interactive television and data transmission system | |||
| 832 | 5319676 | Digital pre-modulation filter | |||
| 833 | 5319675 | Quadrature modulation circuit | |||
| 834 | 5317276 | Phase shifter | |||
| 835 | 5303412 | Composite direct digital synthesizer | |||
| 836 | 5295160 | Apparatus for FM-modulation of digital signals | |||
| 837 | 5293407 | Digital modulator with digital power control circuit | |||
| 838 | 5289503 | Method and circuit arrangement for producing a QPSK signal on which a carrier signal is superposed | |||
| 839 | 5285479 | Quadrature modulation circuit | |||
1993 | |||||
| 840 | 5265120 | Binary phase shift keying modulation system and/or frequency multiplier | |||
| 841 | 5260673 | .pi./4 differential encoding for digital cellular mobile systems | |||
| 842 | 5255086 | Method and apparatus for RF data transfer in a CATV system | |||
| 843 | 5251324 | Method and apparatus for generating and collecting viewing statistics for remote terminals in a cable television system | |||
| 844 | 5247542 | QPSK power amplifier distortion correction system | |||
| 845 | 5237324 | System and method for producing baseband analog modulation signals | |||
| 846 | 5235619 | Cable television radio frequency subscriber data transmission apparatus and RF return method | |||
| 847 | 5235612 | Method and apparatus for cancelling spread-spectrum noise | |||
| 848 | 5228043 | Direct modulation phase shift keying (DM-PSK) transmission system | |||
| 849 | 5225902 | Automatic frequency selection in a bi-directional cable television system | |||
| 850 | 5225795 | Digital quadrature modulator | |||
| 851 | 5222104 | Gain control circuit for radio transmitter | |||
| 852 | 5222103 | Differential quadrature phase shift keying encoder for subcarrier systems | |||
| 853 | 5216391 | MSK modulator having a digital quadrature reference waveform generator | |||
| 854 | 5214396 | Method and apparatus for providing a biphase modulated signal having flat envelope characteristics without a direct current component | |||
| 855 | 5210775 | .pi./4 shift QPSK modulator and communication apparatus | |||
| 856 | 5193222 | System for interrupting a transmitter output wave | |||
| 857 | 5191597 | Method of compensating for non-linearities in an end amplifier incorporated in a radio transmitter | |||
| 858 | 5187721 | Frequency shift keying modulator | |||
| 859 | 5185765 | High speed data communication system using phase shift key coding | |||
| 860 | 5177604 | Interactive television and data transmission system | |||
1992 | |||||
| 861 | 5175514 | Digital modulator and baseband signal generator for digital modulator | |||
| 862 | 5173924 | Method for equalizing received burst signal | |||
| 863 | 5157693 | Digital modulation circuit | |||
| 864 | 5155590 | System for data channel level control | |||
| 865 | 5155454 | MSK modulator using a VCO to produce MSK signals | |||
| 866 | 5148128 | RF digital phase shift modulators | |||
| 867 | 5148127 | Biphase shift keying modulation circuit having constant envelope characteristics | |||
| 868 | 5146473 | Subscriber unit for wireless digital subscriber communication system | |||
| 869 | 5142690 | Cable television radio frequency data processor | |||
| 870 | 5140613 | Baseband modulation system with improved ROM-based digital filter | |||
| 871 | 5140540 | Delay equalization emulation for high speed phase modulated direct digital synthesis | |||
| 872 | 5126698 | Phase modulator operated in saturation and with small angle modulation | |||
| 873 | 5121412 | All-digital quadrature modulator | |||
| 874 | 5119396 | Binary phase shift keying modulation system | |||
| 875 | 5111155 | Distortion compensation means and method | |||
| 876 | 5105435 | Method and apparatus for cancelling spread-spectrum noise | |||
| 877 | 5093637 | Modulation device with input signal modification for correction of amplifier nonlinearities | |||
| 878 | 5090026 | GMSK narrowband modem | |||
1991 | |||||
| 879 | 5077757 | System for synthesizing a modulated signal | |||
| 880 | 5073901 | Method for correcting waveform data in digital signal modulation and base band signal generator using data provided by this method | |||
| 881 | 5073331 | Modulation method for use in a semiconductor laser and an apparatus therefor | |||
| 882 | 5063361 | Serrodyne modulator | |||
| 883 | 5050176 | Direct modulation phase-shift-keying system and method | |||
| 884 | 5049839 | Biphase modulaton circuit having continuous phase changes | |||
| 885 | 5048058 | MSK modulation and differentially coherent detection transmission system | |||
| 886 | 5045816 | Binary phase shift key modulator with programmable level control | |||
| 887 | 5040194 | Method and apparatus for providing for automatic gain control of incoming signals in a modem | |||
| 888 | 5039959 | Phase switching circuit | |||
| 889 | 5030928 | Zero crossing modulator | |||
| 890 | 5027372 | Differential phase shift keying modulator | |||
| 891 | 5022054 | Digital GMSK modulator with non-integer bit interval handling | |||
| 892 | 5020079 | Apparatus for generating a minimum-shift-keying signal | |||
| 893 | 5020076 | Hybrid modulation apparatus | |||
| 894 | 5020075 | Direct sequence spread spectrum modulation apparatus | |||
| 895 | 5014285 | Frequency shift keying communication system with selectable carrier frequencies | |||
| 896 | 5008900 | Subscriber unit for wireless digital subscriber communication system | |||
| 897 | 5008898 | Carrier modulating device for a spread spectrum communication device | |||
| 898 | 4999590 | Four state phase shift modulator, in particular for amplitude modulation of two carriers in quadrature with a large number of states | |||
| 899 | 4990867 | Modulator | |||
1990 | |||||
| 900 | 4972440 | Transmitter circuit for efficiently transmitting communication traffic via phase modulated carrier signals | |||
| 901 | 4962510 | Phase modulated system with phase domain filtering | |||
| 902 | 4961206 | Data modem system | |||
| 903 | 4940954 | Unbalanced quadrature PSK modulator-limiter | |||
| 904 | 4937840 | Circuit for pulsed biphase digital modulation | |||
| 905 | 4932038 | Phase modulator circuit | |||
| 906 | 4930141 | Multi-phase PSK modulation apparatus | |||
| 907 | 4926441 | Phase-shift-keying transmitter | |||
| 908 | 4914613 | Frequency synthesis method and a synthesizer apparatus using this method | |||
| 909 | 4910474 | Method and apparatus for generating phase and amplitude modulated signals | |||
| 910 | 4908840 | PSK modulation with an error correction memory | |||
| 911 | 4905256 | Method and device for multistate modulation and demodulation with adjustable protection level | |||
| 912 | 4904963 | Staggered quadrature phase shift keyed laser modulator | |||
| 913 | 4897620 | Continuous phase shift modulation system with improved spectrum control | |||
| 914 | 4896123 | Quadraphase modulator | |||
| 915 | 4894841 | Digital direct-sequence spread-spectrum modem | |||
1989 | |||||
| 916 | 4890302 | Circuit for extracting carrier signals | |||
| 917 | 4882552 | Coherent frequency exchange keying modulator | |||
| 918 | 4876737 | Satellite data transmission and receiving station | |||
| 919 | 4873500 | Phase accumulation continuous phase modulator | |||
| 920 | 4868864 | Autocorrelating 2400 bps handshake sequence detector | |||
| 921 | 4856025 | Method of digital signal transmission | |||
| 922 | 4849703 | Method and apparatus for generating a data sampling clock locked to a baud clock contained in a data signal | |||
| 923 | 4843615 | CPFSK communication system employing nyquist-filtered modulator/demodulator | |||
| 924 | 4843352 | Modulator for generating a burst-like modulated wave | |||
| 925 | 4841547 | Digital communication system | |||
| 926 | 4837786 | Technique for mitigating rain fading in a satellite communications system using quadrature phase shift keying | |||
| 927 | 4829542 | PSK modem system having improved demodulation reliability | |||
| 928 | 4821261 | Packet transmission of digital signals over a high capacity channel, particularly over a satellite broadcasting channel | |||
| 929 | 4817116 | Digital radio communication system utilizing quadrature modulated carrier waves | |||
| 930 | 4812786 | Method and system for providing precise multi-function modulation | |||
| 931 | 4808937 | Phase-locked loop for a modem | |||
| 932 | 4807252 | Digital communication system | |||
| 933 | 4807251 | PSK modem system with improved demodulation reliability | |||
1988 | |||||
| 934 | 4764940 | Modem for RF subscriber telephone system | |||
| 935 | 4761798 | Baseband phase modulator apparatus employing digital techniques | |||
| 936 | 4761751 | Method and apparatus for generating digital signals representing periodic samples of a sine wave | |||
| 937 | 4756008 | Digitized quadrature phase shift keying modulator | |||
| 938 | 4750192 | Method for transmitting digital data by means of continuous phase modulation | |||
| 939 | 4750036 | Interactive television and data transmission system | |||
| 940 | 4748641 | Suppressed carrier modulation method | |||
| 941 | 4745628 | Symbol generator for phase modulated system | |||
| 942 | 4742532 | High speed binary data communication system | |||
| 943 | 4736170 | Unbalanced quarternary PSK modulator using unbalanced quadrature coupler | |||
| 944 | 4730344 | Quadrature-quadrature phase shift keying with constant envelope | |||
| 945 | 4726039 | Constant amplitude PSK modulator | |||
| 946 | 4726038 | Digital communication system | |||
1987 | |||||
| 947 | 4700364 | FSK with continuous phase and continuous slope at bit transitions | |||
| 948 | 4700363 | Data communication method and apparatus | |||
| 949 | 4691318 | Data transmission system with error correcting data encoding | |||
| 950 | 4686688 | Arrangement for generating an angle-modulated carrier signal of a constant amplitude in response to data signals | |||
| 951 | 4686490 | Digital data modulator and digital-to-analog converter | |||
| 952 | 4682118 | Phase shift keying and phase modulation transmission system | |||
| 953 | 4680777 | Quadrature-quadrature phase shift keying | |||
| 954 | 4680556 | Digital modulation apparatus | |||
| 955 | 4672634 | Arrangement for generating an angle-modulated carrier signal of constant amplitude in response to data signals | |||
| 956 | 4659999 | Direct frequency synthesizer which is step-wise variable and has phase continuity and phase reproducibility when switching frequencies | |||
| 957 | 4656647 | Pulsed bi-phase digital modulator system | |||
| 958 | 4656646 | Serial minimum shift-keyed modem | |||
| 959 | 4652838 | Phase randomization to reduce detectability of phase or frequency-modulated digital signals | |||
| 960 | 4648099 | Digital minimum shift keyed modulator | |||
| 961 | 4646323 | Method and system for digital data transmission | |||
| 962 | 4644561 | Modem for RF subscriber telephone system | |||
1986 | |||||
| 963 | 4628286 | Digital frequency modulator | |||
| 964 | 4625318 | Frequency modulated message transmission | |||
| 965 | 4617535 | PSK digital echo modulator with reduced memory capacity required | |||
| 966 | 4613976 | Constant envelope offset QPSK modulator | |||
| 967 | 4601048 | Serial minimum shift-keyed modem | |||
| 968 | 4599583 | Mixed dual frequency generating system | |||
| 969 | 4592071 | Recovery of carrier and clock frequencies in a phase or amplitude state modulation and coherent demodulation digital transmission system | |||
| 970 | 4584540 | Digital direct modulator with type of modulation selection | |||
| 971 | 4581749 | Data frequency modulator with deviation control | |||
| 972 | 4580277 | Digital-based phase shift keying modulator | |||
| 973 | 4575858 | PSK modulation by temporarily increasing frequency to achieve phase change | |||
| 974 | 4573166 | Digital modem with plural microprocessors | |||
| 975 | 4571731 | PSK modem filter switch | |||
| 976 | 4567602 | Correlated signal processor | |||
| 977 | 4565980 | PSK Modulator with preset amplitude and phase corrections for each phase | |||
1985 | |||||
| 978 | 4562415 | Universal ultra-precision PSK modulator with time multiplexed modes of varying modulation types | |||
| 979 | 4559634 | PSK Modem having dual-integrator voltage controlled oscillator | |||
| 980 | 4555792 | Transmitter for transmitting an FSK-modulated signal | |||
| 981 | 4550292 | Automatic oscillator frequency control system | |||
| 982 | 4539533 | Digital MSK modulator | |||
| 983 | 4538282 | Integrated circuit PSK modem phase locked loop | |||
| 984 | 4531221 | Premodulation filter for generating a generalized tamed frequency modulated signal | |||
| 985 | 4527275 | Correlation data communications system | |||
| 986 | 4525846 | Modem in-band secondary channel via radial modulation | |||
| 987 | 4519083 | Bilateral digital data transmission system | |||
| 988 | 4516087 | Method for reducing side-lobe energy in an MSK detectable signal | |||
| 989 | 4511862 | Programmable multitone DPSK modulator | |||
| 990 | 4509171 | Modem multiplexer synchronization by radial modulation | |||
| 991 | 4504802 | Digital PSK modulator for modem | |||
| 992 | 4503545 | System for evaluating transmission line impairments | |||
| 993 | 4500856 | Simplified minimum shift keying modulator | |||
| 994 | 4499585 | Method and apparatus for producing a shaped spectrum modulating signal | |||
1984 | |||||
| 995 | 4481658 | FM-broadcasting system with transmitter identification by binary phase-modulated, differentially coded code signal | |||
| 996 | 4481640 | Spread spectrum modem | |||
| 997 | 4479099 | Multiple phase modulator for N sets of digital data | |||
| 998 | 4477916 | Transmitter for angle-modulated signals | |||
| 999 | 4453257 | Spectrum shaping microwave digital modulators | |||
| 1000 | 4438413 | Serial minimum shift keyed modulator including notch and bandpass filters | |||
| 1001 | 4435824 | Communication system having improved differential phase shift keying modulation | |||
| 1002 | 4426711 | Process for the transmission of service signals for a digital radio beam, as well as transmitter and receiver for using such a process | |||
| 1003 | 4426710 | Processes for generating duo-binary FSK, tamed FSK and TFM modulations and modulators applying those processes | |||
1983 | |||||
| 1004 | 4417219 | Phase displacement modulator | |||
| 1005 | 4377791 | Phase displacement modulator having four quadrant phases | |||
1982 | |||||
| 1006 | 4355401 | Radio transmitter/receiver for digital and analog communications system | |||
| 1007 | 4346472 | Method and apparatus for eliminating double bit errosion in a differential phase shift keying system | |||
| 1008 | 4338579 | Frequency shift offset quadrature modulation and demodulation | |||
| 1009 | 4327439 | Method for generating modem transmission signals with quadrature amplitude modulation | |||
| 1010 | 4320499 | System for multi-level data transmission by means of an angle-modulated carrier having a constant amplitude | |||
| 1011 | 4320361 | Amplitude and frequency modulators using a switchable component controlled by data signals | |||
| 1012 | 4311971 | Apparatus for generating constant-envelope, angle-modulated pulse signals | |||
1981 | |||||
| 1013 | 4307464 | Method and apparatus for synthesizing a modulated carrier to reduced interchannel interference in a digital communication system | |||
| 1014 | 4302844 | Carrier transmission through harmonic polluted medium | |||
| 1015 | 4302842 | Digital radio repeater with regenerator | |||
| 1016 | 4297641 | Serrodyning system employing an adjustable phase shifting circuit | |||
| 1017 | 4261053 | PSK Modulator with reduced adjacent channel interference | |||
| 1018 | 4244047 | Multiplexed carrier transmission through harmonic polluted medium | |||
1980 | |||||
| 1019 | 4236248 | Transmission speed switching system | |||
| 1020 | 4229821 | System for data transmission by means of an angle-modulated carrier of constant amplitude | |||
| 1021 | 4216542 | Method and apparatus for quadriphase-shift-key and linear phase modulation | |||
| 1022 | 4213094 | Poly-phase modulation systems | |||
| 1023 | 4210879 | Four-phase staggered shift keying modulator system | |||
| 1024 | 4206423 | Digitized phase modulating means | |||
1979 | |||||
| 1025 | 4180793 | PSK pulse synthesizer | |||
| 1026 | 4179672 | Phase modulation system for combining carrier wave segments containing selected phase transitions | |||
| 1027 | 4176328 | DC coupled bi-phase modulator | |||
| 1028 | 4174505 | Directional PSK modulation and demodulation system | |||
| 1029 | 4168397 | 8-Phase PSK modulator | |||
| 1030 | 4149121 | Four phase to two phase correlator | |||
1978 | |||||
| 1031 | 4130802 | Unidirectional phase shift keyed communication system | |||
| 1032 | 4121050 | Differential tri-phase shift keyed modulation | |||
| 1033 | 4109101 | Correlative converter between a 2.sup.n -ary code sequence and a 2.sup.n+1 -phase carrier pulse sequence | |||
| 1034 | 4109100 | Reverberation compensating communication system | |||
| 1035 | 4105863 | Arrangement for combining data symbols in accordance with a predetermined weighting function | |||
| 1036 | 4100369 | Device for numerically generating a wave which is phase modulated and which is free from unwanted modulation products | |||
| 1037 | 4088967 | Split-ring digital phase modulator | |||
| 1038 | 4087677 | Digital PSK modem | |||
| 1039 | 4083009 | High reliability diversity communications system | |||
| 1040 | 4070638 | Nonlinear surface acoustic wave PSK encoder/correlator | |||
| 1041 | 4068198 | Phase-locked loop frequency shift key modulator | |||
1977 | |||||
| 1042 | 4063197 | Plural transistor oscillator phase continuous frequency encoder circuit | |||
| 1043 | 4063196 | Plural oscillator phase continuous frequency encoder | |||
| 1044 | 4049909 | Digital modulator | |||
| 1045 | 4041391 | Pseudo noise code and data transmission method and apparatus | |||
| 1046 | 4028641 | Linear phase modulator including a pair of Armstrong modulators | |||
| 1047 | 4021758 | Direct modulation 4 phase PSK modulator | |||
| 1048 | 4021757 | Phase lock-loop modulator using an arithmetic synthesizer | |||
| 1049 | 4013960 | Quadraphase modulator | |||
| 1050 | 4011407 | Narrow-band eight-phase modem | |||
| 1051 | 4008373 | Digital differential phase shift keyed modulator | |||
| 1052 | 4006416 | Digital communication system | |||
1976 | |||||
| 1053 | 3993868 | Minimum shift keying communication system | |||
| 1054 | 3991611 | Digital telemetering system for subsurface instrumentation | |||
| 1055 | 3988540 | Integrated circuit modem with a memory storage device for generating a modulated carrier signal | |||
| 1056 | 3983546 | Phase-to-pulse conversion circuits incorporating Josephson devices and superconducting interconnection circuitry | |||
| 1057 | 3980945 | Digital communications system with immunity to frequency selective fading | |||
| 1058 | 3978406 | Code error detecting system in digital code transmission | |||
| 1059 | 3973201 | PSK modulator with reduced spectrum occupancy | |||
| 1060 | 3969590 | Surface acoustic wave apparatus | |||
| 1061 | 3943285 | Multiplexed data modem | |||
| 1062 | 3942136 | Time multiplex electron beam with modulating means | |||
| 1063 | 3938045 | Transmitter for frequency shift keyed modulation | |||
| 1064 | 3937882 | Full-duplex communication system on a two wire line | |||
| 1065 | 3935386 | Apparatus for synthesizing phase-modulated carrier wave | |||
| 1066 | 3931472 | Asynchronous quadriphase communications system and method | |||
| © 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017 | |||||