СПИСОК патентов США - подгруппа МПК16 H04L27/22


Выделить слова в названиях патентов:


№ п/п Номер патента Название патента

2017

19596104Blind equalization tap coefficient adaptation in optical systems
29564964Optical signal processing device, optical signal processing method and recording medium
39553751Demodulation device
49548812Method and apparatus for sub-carrier frequency control

2016

59515860Wideband and narrowband receiver
69515743Receiver, transmission system, method for receiving polarization multiplexed optical signal, and non-transitory computer readable medium storing receiver control program
79509410High-speed optical transceiver systems and methods
89503304Packet mode auto-detection in multi-mode wireless communication system, signal field transmission for the packet mode auto-detection, and gain control based on the packet mode
99497055Method and apparatus for polar receiver with digital demodulation
109491018Carrier phase and amplitude estimation for phase shift keying using pilots and data
119491017Circuit and method for improving phase detection
129490755Phase shift and attenuation circuits for use with multiple-path amplifiers
139484975Modular microwave backhaul outdoor unit
149467317Method and apparatus for detecting and classifying signals
159461855Methods and arrangements for selecting channel updates in wireless networks
169455850Three phase and polarity encoded serial interface
179444554Digital coherent receiving apparatus
189444503Active signal processing personal health signal receivers
199438301PLL circuit, calibration method, and wireless communication apparatus
209419834MPSK demodulation apparatus and method
219413575Method and apparatus for multi-carrier modulation (MCM) packet detection based on phase differences
229407483Communication using continuous-phase modulated signals
239401829Method for generating a filter bank for receiving a signal modulated by continuous phase modulation, and method for receiving said signal
249397870Signal receiving device for measuring characteristic of wireless communication channel, and method of measuring characteristic of wireless communication channel
259397821Method, apparatus, mobile communication terminal, computer program and storage medium for adjusting frequency error of terminal
269385832Methodology and method and apparatus for signaling with capacity optimized constellations
279385816Methods and arrangements for frequency shift communications by undersampling
289379918System and method for increasing throughput in digital radio broadcast receiver
299369321Increasing sensor data carrying capability of phase generated carriers
309369235Maximizing data rate by adjusting codes and code rates
319363125Blind phase tracking method for a filter bank multi-carrier (FBMC)receiver
329362865Demodulation device, demodulation method and program
339356813Capacity for narrow-band hybrid modulation
349356772Hybrid clock and data recovery circuit and system including the same
359356651Method for self-adaptively demodulating quasi-orthogonal signals, demodulation unit and radio signal receiver
369350489FEC frame header design for cable television signals
379344307Method and apparatus for sub-carrier frequency control
389344306Method for dynamically adjusting signal processing parameters for processing wanted signal and communications apparatus utilizing the same
399344171Transmission method, transmission device, reception method, and reception device
409344038Tri-phase digital polar modulator
419319182Near maximum likelihood spatial multiplexing receiver
429319095DSSS inverted spreading for smart utility networks
439313061Wireless communication system using selective mapping for memory-less demodulation and related methods
449313059Data-modulated pilots for phase and gain detectors
459313018Circuit and method for clock recovery of quadrature amplitude modulated waveforms
469281973Method for demodulating at least one frame consisting of a succession of bits coded according to a Manchester code
479276791Method and apparatus for transmitting PLCP frame in wireless local area network system
489276674Estimating phase using test phases and interpolation for modulation formats using multiple sub-carriers
499270390Frequency and phase offset compensation of modulated signals with symbol timing recovery
509270377High-speed optical transceiver for infiniband and ethernet
519270313Wireless receiver and method for wireless reception
529264147Method and apparatus for phase shift keyed optical communications
539252824Method and apparatus for filtering noise in a signal received by a wireless receiver
549246724Method and apparatus for performing soft demapping in rotated quadrature amplitude modulation (QAM) based communication system
559244126Automated test system with event detection capability
569231653UWB receiver with time drift correction
579231634Compensation apparatus and wireless communication equipment

2015

589209852Modular microwave backhaul outdoor unit
599203511Feed-forward carrier phase recovery for optical communications
609197471Optically interleaved photonic analog to digital converters
619197469System and method for frequency offset estimation for signals containing multi-user symbols
629185322Digital video broadcast receiver
639184954Systems and methods for directed soft data perturbation in layered decoding
649184905Phase compensation receiver
659184779Dynamic medium switch in co-located PLC and RF networks
669179442Wireless communication system, communication apparatus, communication method, and communication program
679178551Circuits and methods for pulse radio receivers
689173007Method and system for synchronization for DVB-S2 frame and its associated frame structure
699166680Apparatus and method for measuring IQ imbalance for optical receiver
709160588Radio receiver and frequency correcting method therefor
719160417Apparatus and method for data communication using wireless power
729154359Packet mode auto-detection in multi-mode wireless communication system, signal field transmission for the packet mode auto-detection, and gain control based on the packet mode
739154351Method to minimize interference into legacy SDARS reception by varying overlay modulation as a function of satellite position
749143374Efficient signal processing for receive and transmit DBF arrays
759143316Non-disruptive eye scan for data recovery units based on oversampling
769136979Carrier wave reproduction device and carrier wave reproduction method
779134813System for demodulating a signal
789130807Data recovery unit (DRU) based on free running oversampling with zero-latency loop
799124393End of communication detection
809106492Digital receiver
819106298Suppression of adjacent channel interference by adaptive channel filtering in mobile radio receivers
829100125Frame formatting for high rate optical communications
839094266Efficient de-spreading
849088465Receiver circuit
859083589Active signal processing personal health signal receivers
869083373Quadrature signal decoding using a driver
879077593Receiver circuit and method for controlling receiver circuit
889054925Parallel digital-to-time converter architecture
899048985Transmission method, transmission device, reception method, and reception device
909048979RF carrier synchronization and phase alignment methods and systems
919036740Performing image rejection on bandpass signals
929036661False lock detection for physical layer frame synchronization
939020077Correction of imbalances in a complex intermediate frequency mixer
949001948Pulse shaping in a communication system
958995247Device triggered wake up of powerline communication devices
968989315Methods, algorithms, software, circuits, architectures, and systems for improved communications over cyclostationary channels
978976905Robust differential receiver for frequency modulated system
988964909Maximizing data rate by adjusting codes and code rates
998964904Receiver filter for DC-wander removal in a contactless smartcard
1008942320Data unit format for multi-user data in long-range wireless local area networks (WLANs)
1018942319Partial response equalizer and related method
1028938015Orthogonal frequency division multiplex (OFDM) demodulator with improved cyclic ambiguity resolution

2014

1038924823System and method for cycle slip correction
1048908808Systems and methods for demodulating a signal
1058908806Method and system for communicating data wirelessly using probabilistic data association
1068891688Receiver circuit and receiver apparatus
1078891661Techniques for data transmission using high-order modulation
1088891644Communication apparatus and communication method
1098879653Soft-demapping of QAM signals
1108848838Detector for single-user coded signals in the presence of interference
1118848834System and method for detecting a frame format
1128848772Device, system and method of phase quantization for phased array antenna
1138817931Apparatus and method for envelope detection
1148792593Radio receiver and method for controlling radio receiver
1158787439Decision feedforward equalization
1168767881Signal processing apparatus, signal processing method, and program
1178744014Method and apparatus for coordinated MIMO signal transmission among multiple cells in wireless OFDM systems
1188724744Method and apparatus for wide dynamic range reduction
1198718190Receiver/transmitter capable of simultaneously receiving/transmitting discontinuous frequency signals and method thereof
1208705664Soft-input generation for soft-decision FEC decoding
1218699629Signal demodulation method
1228665014I/Q demodulation apparatus and method with phase scanning
1238644426Robust differential receiver for frequency modulated system

2013

1248605828Blind mechanism for demodulating offset QPSK signals in the presence of carrier phase error
1258605826Multi-gigabit millimeter wave receiver system and demodulator system
1268594243Device and method of data recovery
1278588344Detecting the modulation type and/or constellation order of a PSK/QAM-modulated signal
1288588343Apparatus for calibrating amplitude and phase errors, multiport amplifier including the same, and method of amplifying the multiport amplifier
1298576954Method and apparatus of cross-correlation
1308576953Identification of target signals in radio frequency pulsed environments
1318576952Configurable all-digital coherent demodulator system for spread spectrum applications
1328576950Reception apparatus, reception method, demodulation apparatus, demodulation method, and program
1338571141Carrier recovery device and method
1348532227Method and apparatus for robust and high efficiency FEC frame header recovery
1358520780Communication units, communication system and methods for modulation and demodulation
1368509355Method and apparatus for low power simultaneous frequency, automatic gain control and timing acquisition in radio receivers
1378483322Automatic frequency correction
1388451950Method and apparatus adapted to demodulate a data signal
1398428184Transmitter, receiver, data transmission method and data reception method
1408401119Equalizer based symbol timing recovery with symbol enabled control
1418401118Method and apparatus for constant envelope demodulation
1428401038False lock detection for physical layer frame synchronization

2012

1438331497Joint synchronizer and decoder
1448325827Transmitting device, receiving device and communication method for an OFDM communication system with new preamble structure
1458324963Demodulation circuit
1468311152Adaptive OFDM receiver based on carrier frequency offset
1478295405Apparatus and method for I/Q mismatch calibration
1488284871Synchronization determining circuit, receiver including the synchronization determining circuit, and method of the receiver
1498283975Data processing system
1508270511Methodology and method and appartus for signaling with capacity optimized constellations
1518259857Methods and systems for increased communication throughput
1528254498Random orthogonal frequency division multiplexing
1538243855Calibrated quadrature generation for multi-GHz receiver
1548238481Blind channel estimation for PSK and D-PSK modulated multicarrier communication systems
1558238463Reception and measurement of MIMO-OFDM signals with a single receiver
1568223890Asymptotically optimal modulation classification method for software defined radios
1578218692Signal separator
1588204161Configurable all-digital coherent demodulator system for spread spectrum applications
1598194793Multi-stage frequency offset estimation and compensation method and its circuit
1608170149OFDM receiver apparatus
1618165246Training sequence for low latency LMS implementation
1628160458Optical phase-modulation evaluating device
1638159929Low complexity high performance TMCC acquisition in ISDB-T and ISDB-TBS receivers
1648159288Low power BPSK demodulator
1658155241System for processing common gain values
1668139687Method to track a target frequency of an input signal
1678139655System and method for effectively transferring electronic information
1688138824Recursive demodulation apparatus and method
1698135094Receiver I/Q group delay mismatch correction
1708126089Method and apparatus for providing frame synchronization in a digital communication system that supports multiple modulation formats
1718107560Method and apparatus for interference cancellation in communication signal processing
1728098772Method for digital wireless communications
1738094755Ramping in multimode transmitters using primed filters
1748090057Robust burst detection and acquisition system and method
1758090055Binary continuous phase modulation (CPM) data demodulation receiver

2011

1768085879Method for amplitude insensitive packet detection
1778081027Reception device, control method, and program
1788073080Method and system for RC-CR quadrature generation with wideband coverage and process compensation
1798068563Systems and methods for frequency offset correction in a digital radio broadcast receiver
1808068562Signal processing for multiple chains including barker code correlation and auto-correlation
1818064544Method and device for receiving OPFDM-DQPSK signal
1828050361Method and apparatus for coding in a telecommunications system
1838044713Receiving circuit and method for receiving an amplitude shift keying signal
1848040977Reception synchronization control device, reception synchronization control method, and program therefor
1858036310Transmitter and receiver
1868014462Apparatus for performing alternating quadratures differential binary phase shift keying modulation and demodulation
1877995678System and method for communicating data using weighted bit soft decisions for differentially encoded phase shift keying
1887991043Hybrid polyphase and joint time-frequency detection
1897978790Method and circuit for carrier control in a quadrature demodulator
1907970080Modes of operations in QAM modems using hysteresis sub-states
1917970079Phase shift keying wireless communication apparatus and method
1927961819Space-time block decoder for a wireless communications system
1937953184Direct sampling type wireless receiver and method using the same
1947929654Data sampling circuit and method for clock and data recovery
1957920654Signal processing method and apparatus using bit confidence values
1967912111Dynamic switching of carrier tracking loops without loss of tracking information
1977899137Mobile communication system with integrated GPS receiver
1987898322Demodulator for a low power radio receiver
1997885367System for adjusting sampling timing of DLL circuit, method therefor and transmitter-receiver used therefor
2007876149Harmonic quadrature demodulation apparatus and method thereof
2017873124Method for digital wireless communications
2027873123Null detector and method thereof
2037864893Decoder with soft decision combining
2047864892Control method and apparatus for receiving optical signal

2010

2057860191Optimal two-layer coherent demodulation for D-PSK (Differential Phase Shift Keying)
2067836471Apparatus for receiving satellite DMB and method thereof
2077830989Ultra wideband impulse radar
2087826565Blocker performance in a radio receiver
2097817709Non-coherent phase differential and multiple orthogonal signal reception
2107809092Method and system for UMTS HSDPA shared control channel processing
2117796710Digital signal demodulator and wireless receiver using the same
2127792220Demodulator system and method
2137792215Direct-conversion receiver and sub-harmonic frequency mixer thereof
2147782128Sign detection device and associated method
2157778360Demodulating a signal encoded according to ASK modulation and PSK modulation
2167773697Method to demodulate amplitude offsets in a differential modulation system
2177769352Receiver and wireless communication apparatus
2187769118Method and apparatus for equalizing received signals based on independent component analysis
2197769112Method and system for generating wavelets
2207764937Frequency error estimation and correction
2217729455PSK receiver, PSK demodulating circuit, communication apparatus, and PSK receiving method
2227728657PLL circuit, phase shifting method, and IC chip
2237702047RF receiving apparatus and method for removing leakage component of received signal
2247702040Method and apparatus for frequency discriminator and data demodulation in frequency lock loop of digital code division multiple access (CDMA) receivers
2257697638Modulation detection in a SAIC operational environment
2267692485Modulation method with insertion of semi-pilot symbols
2277688918Recursive phase estimation for a phase-shift-keying receiver
2287688917Configurable all-digital coherent demodulator system for spread spectrum applications
2297672411Radio receiver
2307671670Device for demodulating a signal containing information being conveyed by phase shift keying
2317660367Base station using a multicarrier communication band divided into a plurality of blocks
2327643585Method for correcting soft decision value, computer program product for the same, and reception apparatus for the same
2337643581Space-time block decoder for a wireless communications system
2347643579Multiple differential demodulator using weighting value

2009

2357639758Blind detection of BPSK signals in a multi-user environment
2367633414Circuit and method for Manchester decoding with automatic leading phase discovery and data stream correction
2377627058Alternating quadratures differential binary phase shift keying modulation and demodulation method
2387619466Quadrature demodulator
2397606332Variable signal delaying circuit, quadrature frequency converter and radio frequency tuner
2407583759Baseband time-domain communications method
2417580483Trimming of local oscillation in an integrated circuit radio
2427579921On-off keying-7-phase shift keying modulation system and method for fiber communication
2437558341Carrier recovery apparatus and digital broadcast receiver using the same
2447558340VSB receiver and carrier recovery apparatus thereof
2457545889Blocker performance in a radio receiver
2467539271System and method for multi-band ultra-wide band signal generators
2477529321Radio digital signal receiver
2487515654Data slicing circuit using multiple thresholds
2497514993IQ demodulator
2507512195Frequency control apparatus, wireless communication apparatus and frequency control method
2517508889Digital apparatus for soft detection of multi-chip DBPSK signals
2527499506Detection of signal modulation format type
2537492835Synchrodyning apparatus
2547486131Quadrature demodulator and interrogator
2557483497Method and apparatus for calculating log-likelihood ratio for decoding in a receiver for a mobile communication system
2567480350Carrier recovery apparatus and broadcasting receiver using the same
2577477708Modes of operations in QAM modems
2587474713System and method for demodulating multiple QAM signals
2597474711Method and system for I/Q imbalance and DC offset correction

2008

2607466769Method and apparatus of cross-correlation
2617463701Fast symbol timing recovery for transmitted digital data
2627456683Amplitude error compensating device and quadrature skew error compensating device
2637450666Ask demodulation device and wireless device using the same
2647440516Apparatus and method for receiving digital multimedia broadcasting in a wireless terminal
2657436907Analog compression of GPS C/A signal to audio bandwidth
2667428273Method and apparatus for efficient preamble detection in digital data receivers
2677428272Method and apparatus for joint phase offset and frequency offset estimator for MPSK transmission
2687428270Method and system for detecting and classifying the modulation of unknown analog and digital telecommunications signals
2697415078Demodulation for phase modulation
2707409015Adaptive modulation scheme based on cutoff rate with imperfect channel state information
2717406137Carrier recovery system and method thereof
2727403579Dual mode QAM/VSB receiver
2737388934Detection and correction of phase jumps in a phase sequence
2747376206Method and apparatus for adjusting the phase of a received signal
2757369629FSK signal demodulation circuit
2767362827System and method for the demodulation of IFF signals
2777342981Digital receiver having adaptive carrier recovery circuit
2787342980Estimating carrier phase in communication systems
2797333792Multi-carrier receiving method and apparatus
2807333571Reduced complexity coding system using iterative decoding
2817324612Carrier tracking circuit and method including dual numerically controlled oscillators and feedforward phase correction coefficient
2827319716Transmitter image suppression in TDD transceivers

2007

2837310387Apparatus for compensating DC offsets, gain and phase imbalances between I-channel and Q-channel in quadrature transceiving system
2847292655Apparatus and method and decoding biphase signals
2857292653Carrier lock detector
2867289557Adaptive equalization using a conditional update sign-sign least mean square algorithm
2877280615Method for making a clear channel assessment in a wireless network
2887277504Method and system for concurrent estimation of frequency offset and modulation index
2897263139Phase correction for a phase modulated signal with mutually interfering symbols
2907260159Method and apparatus for providing higher order modulation that is backwards compatible with quaternary phase shift keying (QPSK) or offset quaternary phase shift keying (OQPSK)
2917260158Digital broadcast receiver and digital broadcast receiving method
2927251295Apparatus for recovering carrier
2937245672Method and apparatus for phase-domain semi-coherent demodulation
2947233632Symbol timing correction for a phase modulated signal with mutually interfering symbols
2957230995Interleaver pattern modification
2967221718I/Q demodulator and I/Q signal sampling method thereof
2977218685Direct conversion receiver
2987203253Method and apparatus of cross-correlation
2997197091Direct conversion receiver with direct current offset correction circuitry
3007190742Differential receiver circuit with electronic dispersion compensation
3017184494Regenerated data signal generation apparatus
3027180964Constellation manipulation for frequency/phase error correction
3037177374Apparatus and method for sampling frequency offset estimation and correction in a wireless communication system
3047173982Method and circuit for digitally correcting the frequency of a signal
3057161993Method and apparatus for coding in a telecommunications system

2006

3067155181High sensitivity RF receiver and method for forming the same
3077145966Signal quality estimation for continuous phase modulation
3087145965Digital demodulator for terrestrial receiver
3097139334Cooperative code-enhanced multi-user communications system
3107139332Quadrature receiver sampling architecture
3117139331Characterizing channel response in a single upstream burst using redundant information from training tones
3127136422Method and apparatus for capacity increase and enhanced communications performance in CATV networks
3137133470Receiver with offset compensation
3147130360Apparatus and method for receiving digital signal
3157120310Image noise reduction method and device
3167120210Method and system for processing a signal
3177120205Method and system for multiple-shift code acquisition of optical orthogonal codes in optical CDMA systems
3187116837Method and apparatus for reducing image noise
3197116729Trimming of local oscillation in an integrated circuit radio
3207116728Quadrature alignment in communications receivers using dual delay lines
3217113552Phase sampling techniques using amplitude bits for digital receivers
3227109787High-efficiency circuit for demodulating carriers in quadrature
3237106815Ingress noise reduction in a digital receiver
3247106809AM/FM/IBOC receiver architecture
3257095807Method for decoding biphase signals
3267095803Method of reconstructing data transmitted over a transmission path in a receiver and corresponding device
3277095290Method and system for generating higher order modulations with QPSK modulator
3287092461Polyphase receivers
3297092458Carrier recovery circuit and lock detection circuit for mixed PSK signals
3307088787Post-FFT scaling to reduce multiple effects
3317082171Phase shifting applications of universal frequency translation
3327079599Multi-mode quadrature amplitude modulation receiver for high rate wireless personal area networks
3337079596Multiband data communication apparatus, communication method of multiband data communication apparatus, and storage medium
3347079592Complementary code keying demodulation system
3357072426Demodulation apparatus and method in a communication system employing 8-ary PSK modulation
3367072425Digital TV receiver
3377068737Digital TV receiver
3387068732Receiving apparatus and power control method
3397068731Apparatus and method for multi-channel receiver
3407061993CDMA receiver architecture for lower bypass switch point
3417058137Phase shifters for peak-to-average power ratio reduction in multi-carrier communication systems
3427050512Receiver architecture
3437039855Decision function generator for a Viterbi decoder
3447039132Differential detection of GFSK signal using decision feedback and preamble for carrier, clock and frame synchronization
3457039131Carrier frequency offset estimation in a wireless communication system
3467039130RF receiver phase correction circuit using cordic and vector averaging functions and method of operation
3477027529Demodulation method and demodulation apparatus
3487027497Adaptive equalization method and adaptive equalizer
3497020221System and method for an IF-sampling transceiver
3507010062System and method for multi-carrier modulation
3517010061Configurable all-digital coherent demodulator system for spread spectrum applications
3527010059Quadrature demodulator for compensating for gain and phase imbalances between in-phase and quadrature-phase components
3537003054Receiving method and receiver
3546999528I/Q demodulator device with three power detectors and two A/D converters
3556996193Timing error detection circuit, demodulation circuit and methods thereof
3566993096BS digital broadcasting receiver
3576993094Coarse frequency synchronization in multicarrier systems
3586987816Iris data recovery algorithms
3596985540AM demodulator
3606983029Blind channel estimation and data detection for PSK OFDM-based receivers

2005

3616965654Frequency offset quantity detecting apparatus
3626956924Efficient implementation of a decision directed phase locked loop (DD-PLL) for use with short block code in digital communication systems
3636947497Digital signal receiver and method for receiving digital signal
3646944242Apparatus for and method of converting soft symbol information to soft bit information
3656940927Simplified symbol timing tracking circuit for a CPM modulated signal
3666922555Phase interpolation receiver for angle modulated RF signals
3676907027Radio communication system
3686901120Method and apparatus for iterative parameter estimation
3696895045Balancing amplitude and phase
3706876708Method and apparatus for demodulation of phase shift keyed signals
3716873663Reception of M-ary PSK-modulated signals
3726862324Data aided symbol timing system for precoded continuous phase modulated signals
3736859507Method and apparatus for correcting a signal
3746856656Iterative carrier phase tracking decoding system
3756850576Method and apparatus for reproducing timing, and a demodulating apparatus that uses the method and apparatus for reproducing timing
3766850562Digital equalizing method and radio communication receiver implementing said method
3776847694Method for determining the sampling phase and method for synchronization word detection using the phase detection method

2004

3786834089Device for computing tangent angles and associated DQPSK decoder
3796823026Apparatus and method for baseband detection
3806813321Digital demodulator
3816807221Channel spreading device and method for CDMA communication system
3826788747Receiver capable of receiving analog broadcast and digital broadcast and IC for the same
3836785348Demodulator and method for demodulating CPFSK-modulated signals using a linear approximation of the CPFSK signal
3846785343Rectangular-to-polar conversion angle quantizer
3856782045Frequency error measuring method and frequency error measuring device
3866781447Multi-pass phase tracking loop with rewind of current waveform in digital communication systems
3876778614Complex baseband envelope computation
3886778594Receiver architecture employing low intermediate frequency and complex filtering
3896771718Method for frequency error estimation
3906763074Adaptive configurable demodulation system with multiple operating modes
3916760393Spread-spectrum GMSK/M-ary radio with oscillator frequency correction
3926757341Digital audio interface signal demodulating device
3936754257Frame timing synchronization method
3946748206Low-power-consumption radio receiver
3956748037Digital broadcasting receiver
3966748030Differential phase demodulator incorporating 4th order coherent phase tracking
3976744839Clock regeneration circuit
3986744836Apparatus, computer readable medium, transmission medium, and method for synchronizing a received signal based on a maximum likelihood principle using a bisection technique
3996735259Method and apparatus for optimization of a data communications system using sacrificial bits
4006735188Channel encoding and decoding method and apparatus
4016731710Method for rapid carrier frequency estimation in a communication system
4026731698Quadrature demodulation circuit capable for canceling offset
4036728321Receiving device for angle-modulated signals
4046700940Carrier reproduction circuit
4056693882Frequency correction burst detection
4066690745Circuit for detecting the phase of received signal
4076684059Frequency generation in a wireless communication system
4086683926Gain controller with comparator offset compensation for circuit having in-phase and quadrature channels
4096683921Received-signal absolute phasing apparatus of receiver
4106683493Timing reproducing device and demodulator
4116678342Absolute-phasing synchronization capturing circuit
4126678336Hierarchical transmission digital demodulator
4136674731Transmission and reception of TCP/IP data over a wireless communication channel

2003

4146665292Transmission and reception of TCP/IP data over a wireless communication channel
4156650636Transmission and reception of TCP/IP data over a wireless communication channel
4166643339Receiver and receiving method
4176643335Signal point arrangement dispersion calculation circuit
4186639951Digital demodulator
4196631171QPSK modulation signal receiving unit
4206625239Circuit for capturing frame sync signal in receiver
4216625231Adaptive phase demodulation
4226624691Demodulator for processing digital signal
4236615060Communication device effectively controlling power supply, method of controlling power supply, and medium
4246614856Intermediary frequency input QPSK demodulator
4256597754Compensation of frequency pulling in a time-division duplexing transceiver
4266590941Semi-NDA frequency correction at the receiving end in a packet transmission system
4276566941Method and device of phase detection in phase modulation systems
4286553080Constant envelope modulation communication system
4296549763Receiving apparatus and method
4306546047Methods and circuits for optimal equalization
4316542557Method and apparatus for high speed signaling
4326535566Demodulating method and receiver apparatus
4336535562Method and apparatus for rotating the phase of a complex signal
4346529559Reduced soft output information packet selection
4356526107Synchronization acquiring circuit
4366519303Clock reproduction circuit

2002

4376498818Method and system for transmitting information by means of phase modulation
4386490326Method and apparatus to correct for in-phase and quadrature-phase gain imbalance in communication circuitry
4396480552Soft output metrics generation for symbol detectors
4406470030Orthogonal frequency division multiplexing receiver system
4416459888Method of estimating carrier frequency in a digital mobile communications system through multiple hypotheses performed on the received signal
4426445685Uplink demodulator scheme for a processing satellite
4436442216Digital demodulator using boxcar filters and boxcar filter sections
4446430212Spread-spectrum GMSK/M-ary radio
4456415004Phase detector, timing recovery device using the same, and a demodulator using the timing recovery device
4466396883Method for detection of pilot tones
4476377620Balancing amplitude and phase
4486363131Method and apparatus for joint timing synchronization and frequency offset estimation
4496363100Radio data communication system using spread spectrum scheme
4506359951Method and apparatus for high speed signaling
4516359518Signal level adjusting circuit using coupling stage for preventing variation from resulting in each operating point of first amplifying stage and second amplifying stage
4526351503Threshold extension block phase estimator for quasi-coherent communications systems

2001

4536324234Synchronization and clock recovery
4546301291Pilot symbol assisted modulation and demodulation in wireless communication systems
4556298099Constant envelope modulation communication system
4566282235Signal processing apparatus
4576272190System for wireless transmission and receiving of information and method of operation thereof
4586271950Optical differential phase shift keying transmission system having multiplexing, routing and add/replace capabilities
4596269128Clock recovery control in differential detection
4606263031Method and apparatus for signal burst classification
4616256487Multiple mode transmitter using multiple speech/channel coding modes wherein the coding mode is conveyed to the receiver with the transmitted signal
4626246729Method and apparatus for decoding a phase encoded data signal
4636246281Absolute phasing circuit
4646243429Data demodulator for correcting bit errors
4656229471Method for detecting a pulse-usable system
4666218896Vectored demodulation and frequency estimation apparatus and method
4676198783System for wireless serial transmission of encoded information

2000

4686154490Signal processing apparatus
4696134429Direct digital down conversion of a 10.8 MHz intermediate frequency signal in the personal handy phone system
4706125152Output signal modification providing phase amplified information for soft decision decoding
4716125136Method and apparatus for demodulating trellis coded direct sequence spread spectrum communication signals
4726122327Radio receiver
4736115419Adaptive digital beamforming receiver with .pi./2 phase shift to improve signal reception
4746115417Signal quality measuring scheme
4756111923System and method for calculating a state transition metric in a viterbi equalizer
4766108373Process and device for detecting loss of carrier recovery and of determining the Eb/No ratio of a digital transmission link
4776104762Timing recovery apparatus and a diversity communication apparatus using the same
4786088411Method and apparatus for a unique word differential detection and demodulation using the unique word differential detection
4796088410False-synchronization detection device for bit-synchronous circuit of . .pi/4-shift DQPSK demodulator
4806078630Phase-based receiver with multiple sampling frequencies
4816072842Carrier-recovery loop with stored initialization in a radio receiver
4826055281Passband DQPSK detector for a digital communications receiver
4836038270Radio receiver apparatus and radio receiving method
4846032029Receiver selecting either a first demodulated signal or a second demodulated signal in accordance with characteristics of a received signal
4856026131Automatic gain control systems
4866018556Programmable loop filter for carrier recovery in a radio receiver

1999

4875995541Method and apparatus for self-calibration and testing of ZPSK transmitter/receiver IC's
4885995520Carrier slip compensation method for coherent detection
4895974040Receiver and transmitter-receiver having variable attenuator to avoid saturation by a strong signal
4905966416Verification of PN synchronization in a spread-spectrum communications receiver
4915963590Method for receiving digital radio signals and a digital radio signals receiver
4925960030Carrier detection unit and carrier detection method
4935956376Apparatus for varying a sampling rate in a digital demodulator
4945943369Timing recovery system for a digital signal processor
4955940451Automatic gain control in quadrature phase shift keying demodulator
4965923223Transmission system in which either an in-phase or quadrature component of a transmitted signal is delayed prior to modulation
4975909471Method and system for rapid initial control signal detection in a wireless communications system
4985905767Timing recovery apparatus and a diversity communication apparatus using the same
4995903186Demodulator of MSK signal
5005875216Weight generation in stationary interference and noise environments

1998

5015848105GMSK signal processors for improved communications capacity and quality
5025844938Carrier based data operated squelch
5035841817Apparatus and methods for signal recovery in a digital communication system
5045822379Device for receiving digital signals
5055805642Method for detecting differently encoded signal sequences using a recursively computed reference signal
5065805018High-speed demodulating method of burst data and apparatus for same
5075790604Method and apparatus for automatic frequency correction acquisition
5085787125Apparatus for deriving in-phase and quadrature-phase baseband signals from a communication signal
5095761250Iterative filtering frequency estimator and estimation method
5105760645Demodulator stage for direct demodulation of a phase quadrature modulated signal and receiver including a demodulator stage of this kind
5115751773System for wireless serial transmission of encoded information
5125748682Oscillator frequency offset error estimator for communications systems
5135748680Coarse frequency burst detector for a wireline communications system
5145745532System for wireless transmission and receiving of information and method of operation thereof
5155742644Receiving circuitry for receiving serially transmitted encoded information
5165732105Method of estimating signal quality in a DPSK demodulator
5175721756Digital receiver with tunable analog parameters and method therefor
5185719903Method and apparatus for receiving symbols
5195717725System for wireless transmission and receiving of information through a computer bus interface and method of operation
5205710798System for wireless transmission and receiving of information and method of operation thereof
5215710793Error signal quantization method and hardware for mixed blind and decision directed equalization
5225706313Soft decision digital communication method and apparatus

1997

5235696769Decision error correcting method of a digital communication system and the digital communication system for the same
5245694428Transmitting circuitry for serial transmission of encoded information
5255694415Signal communication system capable of recognizing reception of reception desired signal
5265668838Instantaneous phase detecting circuit and clock recovery signal generating circuit incorporated in differential demodulator
5275648986Receiver in digital radio communication device with selective equalization
5285646698Pre-frame-comb as well as "pre-line-comb" partial-response filtering of BPSK buried in a TV signal
5295627864Phase shift correcting apparatus of a sync detector in a satellite broadcasting reception system
5305625643Modulator and demodulator apparatus
5315623225Quadrature signal demodulation using quantizing and accumulating
5325621483Polarity selection circuit for bi-phase stable FPLL
5335612977Automatic frequency control circuit for a receiver of phase shift keying modulated signals

1996

5345579343Soft decision circuit
5355566214Automatic noise normalization and reacquisition control for a QPSK demodulator symbol tracking loop
5365566184Phase ambiguity removing device
5375565930Receiver with oversampling analog-to-digital conversion for digital signals accompanied by analog TV signals
5385563908Modulator and demodulator apparatus
5395563664Pre-frame-comb as well as pre-line-comb partial-response filtering of BPSK buried in a TV signal
5405550868.pi./4-DQPSK delay spread detection and compensation apparatus and method
5415537442Instantaneous phase detecting circuit and clock recovery signal generating circuit incorporated in differential demodulator
5425535252Clock synchronization circuit and clock synchronizing method in baseband demodulator of digital modulation type
5435533068Frequency error detecting device capable of correctly detecting a frequency error between a carrier frequency and a standard frequency
5445524026Method and apparatus for judging timing phase of modem which is used in data communication
5455517530Method and apparatus for dual demodulation of mobile channel signals
5465490177Method and apparatus for determining signal quality

1995

5475457710Method and circuit for detecting burst signal
5485446763Apparatus and method for converting soft symbols into soft bits
5495440265Differential/coherent digital demodulator operating at multiple symbol points
5505440259Frequency stabilizing circuit for a .pi./4 shift QPSK signal receivers
5515379324System and method for calculating channel gain and noise variance of a communication channel

1994

5525375143Method for channel adaptive detecting/equalizing
5535355243Direct detecting of optical PSK signals
5545313493Plural-differential, phase-shift-keyed modulation, communication system
5555301364Method and apparatus for digital automatic gain control in a receiver
5565276685Digital automatic gain control

1993

5575263052Viterbi equalizer for radio receiver
5585261120Method and apparatus for transmitting a signal with an offset which follows a received signal
5595241545Apparatus and method for recovering a time-varying signal using multiple sampling points
5605237287Demodulating method and apparatus particularly for demodulating a differential phase-shift keying signal
5615228043Direct modulation phase shift keying (DM-PSK) transmission system
5625214675System and method for calculating channel gain and noise variance of a communication channel
5635212826Apparatus and method of DC offset correction for a receiver
5645204977Apparatus and method of automatic gain control in a receiver
5655195106Method for channel adaptive detecting/equalize

1992

5665121414Carrier frequency offset equalization
5675107521Single analog path multi-data rate matched filtered demodulator
5685083304Automatic gain control apparatus and method

1991

5695062155Modulated light wave demodulator
5705050176Direct modulation phase-shift-keying system and method
5715048059Log-polar signal processing
5725014283Arrangement for equalizing and demodulating binary continuous-phase angle-modulated data signals with modulation index 0.5

1990

5734942592Synchronous receiver for minimum shift keying transmission
5744932029Method and apparatus for correcting errors in convolutional code signals
5754922209Clock recovery device
5764905256Method and device for multistate modulation and demodulation with adjustable protection level

1989

5774873683TDMA radio system employing BPSK synchronization for QPSK signals subject to random phase variation and multipath fading
5784866449Multichannel alignment system
5794835421Squaring circuits in MOS integrated circuit technology
5804833696System for controlling operation mode of modulator/demodulator
5814827488Demodulator for PSK-modulated signals

1987

5824698521Bi-directional current switch
5834696056Frequency converting circuit
5844674105Digital signal processor
5854648134Optical receivers

1986

5864626789Demodulating circuit for data signal
5874617678Apparatus for detecting and recovering binary data from an input signal
5884592009MSK surface acoustic wave convolver
5894577334Digital data receiver including timing adjustment circuit

1985

5904554509Frequency shift keyed demodulation system
5914547736Phase lock loop PSK demodulator with sweep control circuit
5924520492Method for determining the optimum sampling times for a QPSK or QAM received signal
5934503545System for evaluating transmission line impairments
5944498050Demodulation device for composite PSK-PSK modulated waves

1984

5954449222Digital modulation quality monitor

1982

5964355303Receiver for a distribution network power line carrier communication system
5974352071Planar QPSK demodulator

1981

5984281293Planar QPSK demodulator

1980

5994223326Method and device for reducing the probability of loss of a character in a digital transmission employing biphase coding
6004215427Carrier tracking apparatus and method for a logging-while-drilling system
6014215425Apparatus and method for filtering signals in a logging-while-drilling system
6024193033Quadrature transposition stage

1979

6034146841Technique for combatting jitter in multiple phase transmission system

1978

6044109101Correlative converter between a 2.sup.n -ary code sequence and a 2.sup.n+1 -phase carrier pulse sequence
6054099121Spatial diversity satellite communications system with error control
6064072905Wide acquisition range MSK demodulator input circuit

1977

6074052557Phase-jump detector and corrector method and apparatus for phase-modulated communication systems that also provides a signal quality indication
6084035625Method and apparatus for performing binary equalization in voice-band phase-modulation modems
6094028490MSK digital data synchronization detector
6104020283MSK digital data synchronization detector

1976

6113992673System for demodulating a digital modulated wave
6123992617Chopping correlator for a MSK data signal
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017