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2017

19608694Method and device for locating an impairment within a telecommunication line
29608693Signal transmission arrangement with a transformer and signal transmission method
39602518Modulation analysis and distortion identification
49596152Identifying wideband impulse noise through a group of small channels
59596041Noise localization within cable based communication systems
69590696Analysis of captured random data signals to measure linear and nonlinear distortions
79588297Wavelength selective switch, variable dispersion compensator, optical transmission apparatus, and optical transmission system
89581636Cabling system and method for monitoring and managing physically connected devices over a data network
99577755Methods and apparatus for efficient joint power line and visible light communication
109577746Methods for ingress remediation in cable communication systems
119577708Systems and methods for a twisted pair transceiver with correlation detection
129575922Apparatus, system, and method for improving equalization with a software equalization algorithm
139571225Method and apparatus for optimizing target error rates for link adaptation in a communication system
149571157Utility communication method and system
159571156Burst triggered signal analysis
169568530Active cable testing
179568512Voltage sensor systems and methods
189564946Methods and apparatuses for characterizing common mode noise and estimating loop imbalance
199559751Communication system, transmission apparatus, line control apparatus, line state monitoring method and non-transitory computer readable medium storing program
209553683Upstream (US) transient impairment localization and detection within communication systems
219553620Signal detection and characterization
229553601Conversion of analog signal into multiple time-domain data streams corresponding to different portions of frequency spectrum and recombination of those streams into single-time domain stream
239548914Estimating line rate
249548793Communications link discontinuity detection systems and methods
259544103Differential wired communication link quality detector and differential wired communication link quality detection method
269544012Method and apparatus for controlling power source semiconductor
279543756Pulse generator circuit arrangement and method for generating pulsed signals for insulation fault location in IT networks
289537673Minimizing interference between communication networks
299537606Down-hole intelligent communication system based on the real-time characterisation of the attenuation of signals in a coaxial cable used as a transmission medium
309535150Method for calibrating a cable and respective measuring device

2016

319531562Communication system with proactive network maintenance and methods for use therewith
329525958Multidimensional virtual learning system and method
339515852Loss of signal detection on CDR
349515809Testing using analog near end loop back circuit
359515785System and method for detecting loss of signal
369509370Optical transmission system and optical transmission device
379509369Systems and methods for adjusting signaling properties based on cable attributes
389500668Measuring circuit for monitoring and testing functionality of a measuring chain
399497451Cable network data analytics system
409497060Method and circuit for transmitting data
419491027Miniature mobile marker system and method
429490968CDR voter with improved frequency offset tolerance
439490872Reduced memory vectored DSL
449490871Fault localisation
459490870Signal transmission arrangement with a transformer and signal transmission method
469488688Electric cable wear control system
479479637Systems and methods for establishing a diagnostic transmission mode and communicating over the same
489479220Methods and systems for detection and analysis of abnormalities in a power line communication network of a vehicle
499479219Validating a connection to an optical circuit switch
509473275Gain asymmetry characterizing circuit and method for determining characteristics of gain asymmetry possessed by transmitter
519473203Signal select in underground line location
529461704Method and apparatus for initiating and data collection of single ended line test on customer premises equipment
539455766Radio frequency leakage detection in a cable plant
549444660Simplified and effective offset calibration circuit for RxLOS in serdes
559438309Asymmetric channels in power line communications
569432080Probing and estimation of cross-coupling
579432064System and method for automated loss testing
589429603Method and device for detecting aircraft radio signals transmitted in the same channel simultaneously
599429534Method and apparatus for determining wire resistance
609425891Systems and methods for cable loss measurement between indoor and outdoor units
619425857Method and device for secured sharing of signals for crosstalk cancellation
629419862System and method for discovering and verifying a hybrid fiber-coaxial topology in a cable network environment
639417275Cable measuring device and method
649413424Method and apparatus for sensing noise signals in a wireline communications environment
659413423SNR calculation in impulsive noise and erasure channels
669398146System for diagnosing and optimizing vectored DSL lines
679397935Staged signal modification
689397872System and method of link optimization
699397712Systems and methods for transmitter receive band noise calibration for envelope tracking and other wireless systems
709391721Passive intermodulation testing using pulse stimulus
719391699Methods and apparatus for efficient joint power line and visible light communication
729385818Handling of signals transmitted through a human body
739385781Methods and apparatuses for characterizing common mode noise and estimating loop imbalance
749385780Method and apparatus for detecting and analyzing noise and other events affecting a communication system
759379829Detecting signal leakage in cable networks
769379825Trigger synchronized event for channel characterization within communication systems
779379772Transceiver self-diagnostics for electromagnetic interference (EMI) degradation in balanced channels
789379771Fiber length measurement system
799377500Equipment and a plug-in unit of the equipment
809369369Systems and methods for using protocol information to trigger waveform analysis
819369219Radio frequency systems and methods for controlling spurious emissions
829357408Switch-extender and a method for calibrating
839356654Method and apparatus for reducing noise in a communication system
849354262Passive intermodulation measurement apparatus
859350469Mirror signal IQ-imbalance correction
869344203Distortion measurement for limiting jitter in PAM transmitters
879344150Powerline modem device
889341503Cross-path phase calibration for high dynamic range data acquisition
899338281Method and apparatus for detecting and locating loop impairments
909325462User equipment, base station device, and mobile communication method
919325459Radio frequency communication
929319512Systems and methods for establishing a diagnostic transmission mode and communicating over the same
939319102Communication apparatus, communication system, communication method, and storage medium
949319101System and method for ground fault detection in a transformer isolated communication channel of a network device
959313112Test device and a method for determining communication characteristics of a metal cable
969312915Disconnection detecting apparatus and method
979306622Non-contact sensing and reading of signals transmitted by a cable
989302115Apparatus and method for quantification of the desynchronization between the clocks of two HBC active implants
999300357Signal splitter
1009300356Medical cable including authentication circuit
1019300333Methods for computing predistortion values for wireless systems
1029297834Time-domain searching in a test and measurement instrument
1039294262Receiver clock test circuitry and related methods and apparatuses
1049294144Method and apparatus for an adaptive filter architecture
1059288019Apparatuses, methods, and systems for jitter equalization and phase error detection
1069287974Method and apparatus for testing transmission lines normally propagating optical signals
1079281971Vertical eye margin measurement using channel receiver equalizer
1089281898Mach-Zehnder modulator bias control for arbitrary waveform generation
1099276683Load estimation in wireless communication
1109276396Power transmission fault analysis system and related method
1119270813Pre-installation frequency domain premises wiring tests
1129270331Method and system for detecting non-linear devices
1139264837Multidimensional virtual learning system and method
1149264533Systems and methods for establishing a diagnostic transmission mode and communicating over the same
1159264187Measuring bit error rate during runtime of a receiver circuit
1169264154Dynamic range enhancement of high-speed electrical signal data via non-linear compression
1179264101Communication system with proactive network maintenance and methods for use therewith
1189262376Test apparatus and test method
1199258150Channel estimation filtering
1209258093Estimating tone maps in a communication network
1219246753Method and device for predicting and determining failure
1229246614Methods and devices for transmission line analysis
1239240914Communication system with frequency synthesis mechanism and method of operation thereof
1249240848Eye quality monitoring system and method
1259240828Transmitting method and transmission system using the same
1269237001Method and apparatus to calibrate duty cycle distortion

2015

1279225564On-board power line communication system
1289225558Method for receiving a signal, which is transmitted over a pair of wires and receiver
1299225539Storing data relating to cables
1309225387Analysis of captured signals to measure nonlinear distortion
1319219773Method of measuring call delay time
1329219535Method for determining beamforming parameters in a wireless communication system and to a wireless communication system
1339215705Method and apparatus for monitoring control channel in wireless communication system
1349214980High-frequency signal processor and wireless communication system
1359210257Systems and methods employing time domain reflectometry
1369210062Systems and methods for probing wired communication
1379209873Method and apparatus for estimating noise and providing linear equalizers for multi-user MIMO (MU-MIMO) wireless communication systems
1389209863Analysis of captured random data signals to measure linear and nonlinear distortions
1399197288Determining the signal quality of an electrical interconnect
1409191130Multi-carrier method in a measurement device
1419191066Systems and methods for loop length and bridged tap length determination of a transmission line
1429188621Impairments identification module and method
1439184795Packet energy transfer in-line communications
1449178990Systems and methods for characterizing loops based on single-ended line testing (SELT)
1459178986Method and device for identification of an impairment within a telecommunication line
1469178668Method and apparatus for detecting improper connections near a customer premises equipment
1479178628Method and apparatus for graphic display of I/Q values of a baseband signal
1489178564Communication cable breaker and method using same
1499178544Parameter offset estimation through use of a secondary signal collected from multiple sensors
1509176188Waveform calibration using built in self test mechanism
1519172429Interference control in a broadband powerline communication system
1529172428Determining the spectral energy content of a data bus
1539166853Rate adaptation for data communication
1549166651Method and apparatus for sensing noise signals in a wireline communications environment
1559161376System and method for managing access point communication channel utilization
1569160498Transmission unit and diagnosis method
1579160483Signal transmission device with data length changer
1589160466Periodic calibration for communication channels by drift tracking
1599160463Method for canceling interfering wireless signals in cable customer premises equipment devices
1609160407Method for detecting leakage in digitally modulated systems
1619154595Handheld subscriber line test equipment
1629154391Transmission line disconnection detection method and slave station used for the method
1639154338System and method for IQ imbalance estimation
1649154186Toolstring communication in cable telemetry
1659154180Signal conditioner for bi-directional radio frequency signals in a telecommunications network
1669148796Resilient antenna disturbance detector
1679148235Eye diagram measuring circuit and measuring method thereof
1689148234Technique and test signal for determining signal path properites
1699148200Determining power over ethernet impairment
1709148187Methods and systems for self-referencing single-ended signals
1719136978Systems and methods for enhancing spectral efficiency in a communication network
1729136943Method of characterizing impairments detected by equalization on a channel of a network
1739130871Interference classification with minimal or incomplete information
1749130796Method and apparatus for characterized pre-distortion calibration of a power amplifier
1759130655Methods and systems for detecting metallic faults affecting communications links
1769130654Performance customization system and process for optimizing xDSL performance
1779124723Method and device for data processing in a digital subscriber line environment
1789124234Method and apparatus for adaptive automatic gain control
1799112579Switching VSAT transmitter with smart stand-by mode
1809106735Detection of wiring defects
1819106401Deterministic synchronization for transmitting signals between different clock domains
1829106373Adjustable transmitter power for high speed links with constant bit error rate
1839106326Method for determining the imperfections of a transmit pathway and of a receive pathway of an apparatus, and associated radio apparatus
1849100168Serial communication circuit, semiconductor device, and serial communication controlling method
1859100115Processor unit for determining a quality indicator of a communication channel and a method thereof
1869100112Latency built-in self-test
1879094274Terminal device and method for sending periodic signal
1889094116MIMO-OFDM receiver processing
1899088342Method and apparatus for input cable length indication for SDI signals
1909088310Cable communication systems and methods employing QAM upstream channels below 16.4 MHz for increased aggregate deployed upstream capacity
1919083647System and method for dynamic signal interference detection during testing of a data packet signal transceiver
1929083454Systems and methods for beamforming measurements
1939078151Link performance abstraction method and apparatus in a wireless communication system
1949077567Cooperative spectrum sensing apparatus and cooperative spectrum sensing method
1959077438Noise detection circuit, delay locked loop and duty cycle corrector including the same
1969075108Method and a device for preventing signal-edge losses
1979075100Method, device and circuitry for detecting a failure on a differential bus
1989071704Optimal downstream power back-off for digital subscriber lines
1999071678Intelligent loop diagnostics for digital subscriber line services to support a service assurance system
2009071407Receiver clock test circuitry and related methods and apparatuses
2019071338Reliable data transfer for locomotive consist communications
2029065886System and method for the application of an LMS method to updating an echo canceller in a multicarrier transceiver
2039065735Measuring upstream modulation error ratio
2049065554System and method for analyzing a network
2059059825Receiver, system including the same, and calibration method thereof
2069054914Transmitting device, receiving device, circuit device, communication method and program
2079054794Detecting faults affecting communications links
2089054783Methods, apparatus, and articles of manufacture to trigger preemptive maintenance in vectored digital subscriber line (DSL) systems
2099054782Methods for canceling interfering wireless signals in cable customer premises equipment devices and outside plant
2109048941Characteristic response extraction for non-linear transmit channels
2119048930Detection and estimation of narrowband interference by matrix multiplication
2129048929Broadband radio frequency data communication system using twisted pair wiring
2139036688Rapid modulation scheme determination for linear digital signals
2149036687Predictive network testing
2159031122Reducing phase errors on a communication device
2169026054Method and apparatus for detecting radio signal
2179025954Delivering downstream data in ethernet PON over coax network
2189025648Measurement of DC offsets in IQ modulators
2199020018Systems for calibration of wireless electronic devices
2209020017Signal processing method, device and system
2219020015Differential signal transmission circuit
2229014643Device to test mobile terminal and testing method thereof
2239008712Method and communication device for handling time offsets between communication device and transmission points
2249008164HDMI signal adjusting method, HDMI signal receiving apparatus, HDMI signal transmitting apparatus, and HDMI signal processing system
2259007467Method for operating an image-processing device and a corresponding image-processing device
2269001878Method and apparatus to determine time and distance between transceivers using phase measurements
2279001843Fast wake-up and link acquisition in reduced-twisted pair gigabit Ethernet applications
2288995516Devices and methods for facilitating signal-to-noise ratio estimation of received wireless transmissions
2298995515Dynamically adjusted OFDM channel estimation filtering in OFDM communications
2308995514Methods of and circuits for analyzing a phase of a clock signal for receiving data
2318995513System and method for triggering a device under test via RF leakage
2328995512Adaptive off-channel detector for receivers
2338995510Apparatus and method for analyzing a signal under test
2348989248System and method for detecting victim signal in MB-OFDM UWB communication system
2358989247Reducing signal degradation in wireless communications based on time reversal
2368989246Method and circuit of clock and data recovery with built in jitter tolerance test
2378989245Mirror signal IQ-imbalance correction
2388989244Beacon detection structures, systems and processes for interference testing
2398984038Method and system for unconstrained frequency domain adaptive filtering
2408982938Distortion measurement for limiting jitter in PAM transmitters
2418976850Method and apparatus for sharing channel state information (CSI) in a multiple-user multiple-input multiple-output (MU-MIMO) environment
2428964824Systems, methods, and devices for electronic spectrum management
2438958467Reporting channel quality information for multiple channels
2448953668Method and circuit of clock and data recovery with built in jitter tolerance test
2458953667Communication system with modulation classifier and method of operation thereof
2468948799Channel quality indicator apparatus and method
2478948238Handling complex signal parameters
2488948237Adaptive offset adjustment algorithm
2498942278Systems and methods for detecting data collisions for a near field communication system
2508937989Channel estimation using linear phase estimation
2518934524Method for detecting with a high temporal accuracy a threshold crossing instant by a signal
2528929426Communication device and orthogonal-error correction method
2538929425Modbus repeater with self-adaptive baud rate and self-adaptive baud rate system and method
2548929424Periodic calibration for communication channels by drift tracking

2014

2558923376Apparatus and method for estimating noise and interference power in communication system
2568923374Method and arrangement of delay calibration for orthogonal frequency division multiplexing (OFDM) system
2578913651System and method of frequency offset compensation for radio system with fast doppler shift
2588908753Calibration sub-system for telecommunication systems
2598908751Joint adaptive bias point adjustment and digital pre-distortion for power amplifier
2608908750Circuit device including peak and average detectors
2618902959System and method for determining channel loss in a dispersive communication channel at the Nyquist frequency
2628902958Methods and apparatus to combine data from multiple source to characterize communication systems
2638897398Methods and apparatus for error rate estimation
2648897350Orthogonal transform error corrector
2658897349Determining transmitter impairments using offset local oscillators
2668897348Narrowband diagnostics for twisted pair wiring
2678892430Noise detecting device and noise detecting method
2688891605Variable line cycle adaptation for powerline communications
2698891604Coordinated multi-point transmission
2708891603Re-sampling S-parameters for serial data link analysis
2718891602Analyzing jitter with noise from the measurement environment
2728886474System and apparatus for testing cable
2738885696Systems, methods, and devices for electronic spectrum management
2748885695Receiver circuit
2758885694Changing an operating performance point
2768879614Overpower detection device and radio communication device
2778879613Dynamic frame selection when requesting tone map parameters in mesh networks
2788873611Transmitter, control method, computer program and delta-sigma modulator
2798873610IQ baseband matching calibration technique
2808873608Measurement of IQ imbalance in a vector modulator
2818867597Method, device and system for clock dejitter
2828867596Methods and apparatuses of calibrating I/Q mismatch in communication circuit
2838867594Inferring presence and identity of non-linear devices on a powerline communication network
2848861648Receiving device and demodulation device
2858861579Measuring I/Q impairments from sampled complex signals
2868861578Transition time measurement of PAM4 transmitters
2878861577Method and system for fault identification using pre-equalization coefficients
2888855180Receiver with enhanced DC compensation
2898855179Measuring impairments of digitized signals in data and timing recovery circuits
2908855178Signal transmitter and signal transmitting method for transmitting specific data bit with different predetermined voltage levels
2918848777Receiving apparatus and method for receiving signals in a wireless communication system with improved equalization performance
2928843809Data processing devices, computer readable storage media, and methods
2938831080Apparatus and method for channel quality feedback with a K-best detector in a wireless network
2948831079Apparatus and method for detecting symbol rate
2958831078Method and device for identifying at least one communication channel with an incident signal
2968826096Method of decoding LDPC code for producing several different decoders using parity-check matrix of LDPC code and LDPC code system including the same
2978824564Method and system for redundancy-based decoding of video content
2988824536Systems, methods, and devices for electronic spectrum management
2998824535System and method for transmitting data through a digital interface
3008824534Method for channel estimation
3018824532Method and apparatus to generate wireless test signals
3028817861Complex condition determination unit, transmission device, complex condition determination method
3038817860Systems and methods for performing phase tracking within an ADC-based tuner
3048817859Digital multi-band predistortion linearizer with nonlinear subsampling algorithm in the feedback loop
3058811463Jitter measuring trigger generator, jitter measuring apparatus using the same, method of generating jitter measuring trigger, and method of measuring jitter
3068811462Frame synchronization method and apparatus
3078811461System and method for testing radio frequency wireless signal transceivers using wireless test signals
3088804801Peak suppressor, radio communication apparatus and peak suppression method
3098804800Frequency response measurement system and method
3108798125Phase tracking in communications systems
3118798124Method of measuring error vector magnitude
3128798123Differential signal output device, test method of differential signal output device, and tester
3138797835Method and apparatus for detecting crosstalk between a plurality of devices communicating in accordance with a universal serial bus (USB) protocol
3148792542Method and device for improved detection and analysis of partial discharge activity in and around high voltage electrical equipment
3158787435Narrow band interference determined by second and fourth order norms
3168786291In-situ cable unplug detector operating during normal signaling mode
3178781045Communication apparatuses and wireless communications modules
3188780968Systems, methods, and devices for electronic spectrum management
3198774260Delay estimation
3208774259Mechanism for measuring transmitter I/Q impairments using shared local oscillators
3218774258PAPR (peak-to-average power ratio) determining device and communication device
3228767870Dynamic variable inter-symbol interference (IS) stress impairment system
3238767865Wireless station, an interference estimation method, a wireless communication system and a computer program
3248750442Digital receiver and waveform compensation method
3258750359Apparatus for MIMO channel performance prediction
3268750356Method, apparatus, and system for measuring asymmetric delay of communication path
3278750354Nearfield testing architecture
3288750275Antenna array control method and access point using the same
3298743938Detecting faults affecting communications links
3308743928Adaptive equalizer and operating method thereof
3318738053Method and system for finding a threshold for semi-orthogonal user group selection in multiuser MIMO downlink transmission
3328737536Recovery of data from a multi carrier signal
3338737457Adaptive smoothing of channel estimates
3348731037Receiver, integrated circuit, receiving method, and program
3358731035Cable modem and ranging method
3368724683Communication testing circuit, electronic device, receiving circuit, transmitting circuit, semiconductor integrated circuit, and wafer
3378724682Method for carrying out bidirectional communications
3388718125Apparatus and method for determining and representing a synchronization status
3398718124Noise detection method, noise detection apparatus, simulation method, simulation apparatus, and communication system
3408718123Test apparatus and test method
3418718122Testing performance of a wireless device
3428718121Test device and method of detecting an imbalance in a power level of a channel
3438711914Channel estimating method and device
3448711913Device and method for processing input data of protective relay
3458706047Mobile terminal tester and mobile terminal test method
3468706046Method and device for transmitter calibration
3478705600System and method of selecting a data detection technique for a MIMO system
3488705599Apparatus and method for quantification of the desynchronization between the clocks of two HBC active implants
3498705598Signal-sensitive data compression
3508705597Estimation of the impulse response of a system on the basis of binary observations
3518699552Mechanism for measuring transmitter impairments using offset local oscillators
3528693997Visual ARS service system and method enabled by mobile terminal's call control function
3538693529Method for enabling a device under test (DUT) to retry a portion of a pre-defined test sequence
3548687681Receiver and signal testing method thereof
3558682254Wireless communication system modeling
3568682251Apparatus and methods for estimation of a subchannel power imbalance ratio (SCPIR)
3578681846Measurement of I/Q impairments from a sampled complex signal
3588681845Mechanisms for measuring the I/Q impairments of a receiver
3598681843Method and arrangement in a DSL vectoring system
3608675721Method and apparatus for determining and displaying the throughput rate of a modem
3618675720Noise estimation filter
3628670479Power line communication system
3638665938Wireless transmission apparatus and self-checking method of wireless transmission apparatus
3648665936Experiments transmitter training systems and method
3658660212Interference classification with minimal or incomplete information
3668660170Apparatus and method for calibrating the I/Q mismatch in a quadrature bandpass sampling receiver
3678654828Mechanism for the measurement of DC properties of a signal path
3688654827Estimation of low-amplitude echoes in a received communication signal
3698654826Multi-stage phase estimation method and apparatus
3708654825Backoff adaptation for digital communication systems with channel quality information
3718654377Data communication device, communication control method, and program
3728649305System and method for the application of an LMS method to updating an echo canceller in an ADSL modem
3738643380Method and apparatus for reducing shock and arc-flash hazards in power distribution systems
3748640157Automatic detection of a cable trap
3758638841Transmitting/receiving system, transmitting/receiving method, and computer readable medium for estimating temporal fluctuation of a signal
3768630335SNR estimation

2013

3778619846Amplitude control in a variable load environment
3788619845Optimizing data rate of multi-band multi-carrier communication systems
3798619742System and method for coding WCDMA MIMO CQI reports
3808615034Method for analyzing random telegraph signal and threshold level determination method therefor
3818611407Phase detection in digital communication receivers
3828611406System optimization using soft receiver masking technique
3838606280Apparatus and method for allocating resources based on error vector magnitude (EVM) in a broadband wireless communication system
3848605777Circuit for recognizing a beginning and a data rate of data and method thereof
3858605775Measuring Hum in a digital TV signal
3868605774Amplitude/phase delay calibration for envelope-tracking amplifier
3878599911Method and apparatus for estimating signal to noise ratio in wireless communication system
3888599910Jitter addition apparatus and test apparatus
3898599909Serial link voltage margin determination in mission mode
3908595278Method and system for unconstrained frequency domain adaptive filtering
3918594167Determining spectral samples of a finite length sequence at non-uniformly spaced frequencies
3928594165Half-symbol constellation display
3938588702Method, equipment for submitting a measurement report
3948588287Method, device and system for detecting channel quality
3958587323Method for diagnosing an electrical connection, and output assembly
3968582633Confirmation of presence of narrowband interference by harmonic analysis
3978582632Decoding a signal
3988582631Managing communication operations of wireless devices
3998581600Electrical connectivity test apparatus and methods
4008576902Receiving device and method, demodulating device and method, and program
4018571595Method and system for adjusting WLAN radio receiver gain in a wireless device
4028565293Method for synchronizing a plurality of measuring channel assemblies and/or measuring devices, and appropriate measuring device
4038559493Margin test methods and circuits
4048559492Transmitter-only IC chip having external loopback test function and external loopback test method using the same
4058559490Apparatus and method for removing common phase error in a DVB-T/H receiver
4068548036Noise detection method, noise detection apparatus, simulation method, simulation apparatus, and communication system
4078548034Methods and apparatus for intelligent power reduction in communications systems
4088542723Information processing apparatus and information generation method
4098542722Communication analysis apparatus and communication analysis method
4108525936Communication apparatus, television receiver, video signal processing apparatus, communication method, program, and integrated circuit
4118522104Smart aging retry buffer
4128514921Assessing aircraft interference path loss employing discrete frequency stirring
4138514737Method for estimating carrier-to-noise ratio and base station apparatus using the same in a wireless access system
4148509295Bit error rate prediction
4158509294Signal generator, signal generating system, and signal generating method
4168509293Semi-coherent timing propagation for GERAN multislot configurations
4178494040Method for testing a radio frequency (RF) receiver and related methods
4188494039Method and apparatus reporting channel quality indicator of communication system
4198494038Common mode noise reduction within differential signal
4208494037Complex adaptive phase discriminator
4218494036Resource adaptive spectrum estimation of streaming data
4228488661Systems and methods for data streaming
4238488660Signal analyzing apparatus for LTE system
4248483262Piezoelectric cable perimeter monitoring system
4258472513TX back channel adaptation algorithm
4268462837Constellation-multiplexed transmitter and receiver
4278458539G-ODLAT on-die logic analyzer trigger with parallel vector finite state machine
4288457188Receiver and receiving method using quality measure estimates
4298457187Integrated compact eye pattern analyzer for next generation networks
4308457186Transceiver system and associated methods and systems
4318457184Method and apparatus for performing log-likelihood calculations
4328457183Apparatus with tunable filter and related adjusting method
4338452301Method and apparatus for selecting a coding format
4348451883On-chip full eye viewer architecture
4358446993Receiving apparatus and method for receiving signals in a wireless communication system with improved equalization performance
4368446939Channel quality estimation for MLSE MIMO receiver
4378446938Method and apparatus for estimating carrier frequency offset
4388446937Technique for the measurement of I/Q impairments associated with a sampled complex signal
4398443101Method for identifying and blocking embedded communications
4408442101Tone signal detection apparatus
4418437385Measuring the DC properties of a signal path between transmitter and receiver
4428433533High resolution sensor with scalable sample rate
4438432958Apparatus for measuring jitter transfer characteristic
4448421475AC current sensor for measuring electric AC current in a conductor and an indicator system comprising such a sensor
4458418004Back channel communication
4468416841Multiple-input multiple-output (MIMO) decoding with subcarrier grouping
4478407535Method and apparatus for generating jitter test patterns on a high performance serial bus
4488406283Modulation apparatus, test apparatus and correction method
4498401128Method and system for adaptable receiver parameters
4508401098Digital differential signal transmitter for low supply voltage
4518396146Wireless communication modem
4528396034Method for determining cell identity in wireless communication system and apparatus therefor
4538391346Data signal quality evaluation apparatus
4548391345Power spectral distribution measurement to facilitate system acquisition
4558390302Apparatus and method for adaptive fault detection in MV distribution circuits
4568385395Method and apparatus for determining a quantized channel vector
4578385392Network and method for transmitting data in a system of pipes
4588379707Signal analyzer and methods for displaying constellations
4598379706Signal and noise power estimation
4608379705Hierarchical feedback of channel state information for wireless communication
4618379704Method and device for data processing and communication system with data processing device
4628379703Signal analyzer and method for displaying frequency domain data
4638374321Bit rate matching system and method
4648374230Apparatus and methods for displaying signal characteristics
4658374227Digital signal analysis with evaluation of selected signal bits
4668370706Interleaved correction code transmission
4678369792Methodology to analyze sector capacity in data-only mobile-wireless network
4688369395Portable apparatus and method of measuring wireless channel and multiple antenna correlation
4698363708Receiving circuit, method for receiving a signal, and use of a detection circuit and a control circuit
4708355429Jitter reduction device and method
4718355428Data receiving device
4728345737Detection of network impairments through tilt-normalized measurement data
4738345736Sampling point detection circuit, transmission system, pre-emphasis intensity adjustment method, logic analyzer, and evaluation method for evaluating transmission path
4748345735Modulation and demodulation apparatus using frequency selective baseband and transmission and reception apparatus using the same

2012

4758340168Smart grid radio-frequency interference (RFI) detection
4768340167Method and apparatus for measuring and correcting receiver parameters
4778340166Smart grid radio-frequency interference (RFI) detection
4788340164Evaluation of the feedback quality in communications systems
4798335665Apparatus and method for high resolution measurements for downhole tools
4808335247Method and apparatus for measuring signal phase shifts
4818335246Smart grid radio-frequency interference (RFI) detection
4828332172System for independently modifying jitter and noise components in a signal digitizing instrument
4838331431Signal transmission apparatus and method of controlling the apparatus
4848325791System and method for providing adaptively equalized data signal with alternately adjusted data signal boost and sliced data signal amplitude
4858320438Evaluation device for providing a transceiver system with performance information thereof
4868320437Method and device for decoding a signal
4878320436Calibrating received signal measurements in a communication device
4888315296Method for testing a radio frequency (RF) receiver and related methods
4898311087Methods and apparatus for monitoring voice quality on a wireless communication device
4908311086CATV digital receiver intermodulation susceptibility tester
4918310940Testing upstream cable channels
4928306099Signal receiving device and frequency determining circuit
4938306098Method for error display of orthogonal signals
4948306097Signal suspension and resumption in DSL systems
4958300682Signal processing system, filter device and signal processing method
4968290031Arrangements and methods for providing compensation for non-idealities of components in communications systems
4978289028Wireless communication device
4988284826Synchronization of satellite and terrestrial broadcast ODFM signals
4998280442Radio base station and receiver fault diagnosis method
5008278938Electrical safety devices and systems for use with electrical wiring, and methods for using same
5018271852Data recovery scheme
5028270460Filter for identifying signal artifacts in bandwidth-limited instruments
5038270459Standalone testing of a receiver
5048270458Tunable filter for tone detection
5058270393Method for shaping spectrum of output signal, and a remote access device
5068265630Antenna adaptation to manage the active set to manipulate soft hand-off regions
5078254434OFDM wireless mobile communication system and method for estimating SNR of channel thereof
5088249448System and method of blocking an electrical signal transmission
5098249137In-situ jitter tolerance testing for serial input output
5108249136Adaptive frequency selective baseband communications method using orthogonal codes
5118243780Test device and method of detecting an imbalance in a power level of a digital channel
5128229708Methods and apparatus for signal and interference energy estimation in a communication system
5138228973Communication system, communication method for the same and mobile station and base station used for the same
5148223826Measuring noise power at wireless receivers using pilot symbol information
5158223825Method and computer program for estimating signal quality value, and signal quality estimator, receiver and communication apparatus
5168218612Timing error detector and method thereof
5178218611Signal generator providing ISI scaling to touchstone files
5188213553Method and apparatus for identifying co-channel interference
5198213492Channel estimation method operable to cancel a dominant disturber signal from a received signal
5208213490Transceiver system and associated methods and systems
5218208522System and methods for receiving OFDM symbols having timing and frequency offsets
5228199799Method of monitoring circuit quality and circuit therefor
5238194723Test apparatus for 64B/66B encoding process
5248194601Method for transmitting and receiving signals using multi-band radio frequencies
5258189651Measuring Hum in a digital TV signal
5268184747Flexible timebase for EYE diagram
5278184685System and method for identifying a non-predetermined input data rate
5288184684Automatic gain control stress measurement for digital carriers
5298184677Arrangement in a network repeater for monitoring link integrity and automatically down shifting link speed
5308179953Mobile station apparatus and transmission channel estimation method
5318179952Programmable duty cycle distortion generation circuit
5328175539System and method for management of a shared frequency band
5338170102Macroblock homogeneity analysis and inter mode prediction
5348170088Methods for determining a reference signal at any location along a transmission media
5358165047Apparatus and method for forward link outer loop rate control using hybrid automatic repeat request in mobile communication systems
5368155175Method for measuring multiple parameters of a signal transmitted by a signal generator
5378155174Hardware and method to test phase linearity of phase synthesizer
5388154602Video quality estimation apparatus, method, and program
5398149905System and method for doppler frequency estimation
5408144757System and method for estimating probabilities of events
5418144755Method and apparatus for determining a skew
5428139627DC offset estimation in received signals
5438135056Noise and channel estimation using low spreading factors
5448135055I/Q calibration of transmit and receive paths in OFDM FDD communication systems
5458130821Equalization in capacitively coupled communication links
5468126042FEXT estimation and signaling in vector transmission
5478126040Device and method for calibrating MIMO systems
5488126039Methods and apparatus for evaluating the eye margin of a communications device using a data eye monitor
5498121181Method for determining target type of control signals in multi-channel system
5508116363Method of determining true error vector magnitude in a wireless LAN
5518116198Method for configuring a telecommunication system
5528111764Method for transmitting channel quality information
5538102905Pulse detection in wireless communications system
5548102903Calibrating received signal measurements in a digital subscriber line device
5558102817Method of measurement reporting and cellular radio terminal
5568098720Method and apparatus for suppressing adjacent channel interference and multipath propagation signals and radio receiver using said apparatus
5578094706Frequency-based, active monitoring of reliability of a digital system
5588094705Fast SERDES I/O characterization
5598094704Detecting wireless channel status from acoustic discrimination of spectral content
5608094701Channel estimation for high data rate transmission using multiple control channels
5618090012Apparatus and method for transmitting/receiving channel quality information in a communication system
5628090009Test apparatus

2011

5638085837Characterizing non-compensable jitter in an electronic signal
5648085836Robustness improvement for bandwidth limited communication system
5658081674Methods and system for determining a dominant impairment of an impaired communication channel
5668073043Method for reliable injection of deterministic jitter for high speed transceiver simulation
5678068538Jitter measuring apparatus, jitter measuring method and test apparatus
5688067945Method and apparatus for monitoring a material medium
5698065571Storage area network (SAN) link integrity tester
5708064507System and method for channel estimation
5718064506Signal generator and user interface for setting test sequences and parameters of a test signal
5728059706Method and system for transmission and/or reception of signals utilizing a delay circuit and DDFS
5738058881Method for checking the current flow through individual wires of a braided wire, and apparatus for carrying out the method
5748055479Simplified algorithm for abnormal situation prevention in load following applications including plugged line diagnostics in a dynamic process
5758054872Method and apparatus for signal carrier-to-noise power density ratio calculation
5768045605Jitter amplifier circuit, signal generation circuit, semiconductor chip, and test apparatus
5778045604Estimation of log-likelihood using constrained markov-chain monte carlo simulation
5788040942Method and apparatus for determining an outage in communication systems
5798040941Constellation-multiplexed transmitter and receiver
5808027379Monitoring and adjusting noise parameters
5818027378Circuits, architectures, apparatuses, systems, algorithms and methods and software for amplitude drop detection
5828023577Systems and methods for efficient channel classification
5838023558Method and apparatus for measuring the input frequency response of a digital receiver
5848018990Apparatus for measuring in-phase and quadrature (IQ) imbalance
5858018989System and method for adjusting a serial communications link
5868010321Metrics independent and recipe independent fault classes
5878005133Displaying eye-diagram and digital diagnostic data using network analyzers
5887995647Apparatus and method for evaluating propagation path conditions
5897995645Apparatus for measuring in-phase and quadrature (IQ) imbalance
5907991046Calibrating jitter
5917991045Device and method for testing signal-receiving sensitivity of an electronic subassembly
5927991044System and method for automatic diagnosis of impairments in a digital quadrature amplitude modulated signal
5937984342System and method for MPEG CRC error based video network fault detection
5947983332Eye violation and excess jitter trigger
5957978756Systems and methods for monitoring impulse noise
5967978755Methods and systems for detecting defects in serial link transceivers
5977978754Communication channel calibration with nonvolatile parameter store for recovery
5987977949Loop resistance tester control system
5997965764Simultaneous physical and protocol layer analysis
6007961779Noise-driven recovery of a digital pulse stream
6017961777Signal processing apparatus, signal processing method, and program
6027957923Device for jitter measurement and method thereof
6037957462Integrated compact eye pattern analyzer for next generation networks
6047957461Calibrating automatic test equipment
6057957460Method of and a device for generating a signal having a predetermined quality criterion for use in or on a communication system
6067957459Symbol rate testing method based on signal waveform analysis
6077957305Hierarchical cable modem clone detection
6087953183System for high definition radio blending
6097953144Method and system for detecting impulse noise in a broadband communication system
6107953047Parser for multiple data streams in a communication system
6117949360Method and apparatus for adaptively allocating transmission power for beam-forming combined with OSTBCs in a distributed wireless communication system
6127949040Reception quality measuring apparatus and reception quality measuring method
6137949039Home network testing
6147940838Distortion characterization system
6157940686Network performance tuner
6167933557Methodology to analyze sector capacity in data-only mobile-wireless network
6177933322Timing lock detection apparatus and method for digital broadcasting receiver
6187925935Back channel communication
6197916778Constructing an energy matrix of a radio signal
6207916776Performance customization system and process for optimizing xDSL performance
6217912117Transport delay and jitter measurements
6227907661Testability technique for phase interpolators
6237904106Method and apparatus of adaptively allocating transmission power for beamforming combined with orthogonal space-time block codes based on symbol error rate in distributed wireless communication system
6247903726Signal receiving apparatus and signal power prediction method thereof
6257885322Jitter measuring circuit
6267881363Data transmission rate adjustment system and method thereof
6277873323Method of estimating inter-modulation distortion
6287864834Estimating digital frequency synthesizer jitter

2010

6297859420Devices for testing the operability of electronic circuitry
6307856050Receiver and transmitter calibration to compensate for frequency dependent I/Q imbalance
6317855563Robust cable connectivity test receiver for high-speed data receiver
6327852911Method and arrangement for channel simulation
6337844017Carrier frequency detection for signal acquisition
6347843991Methods and apparatus for monitoring voice quality on a wireless communication device
6357835432Measuring noise power at wireless receivers using pilot symbol information
6367835289Methods for managing a multi data type communication link
6377834638Differential transmission circuit, disk array apparatus, and output signal setting method
6387831229FM receiver with digitally controlled antenna tuning circuitry
6397830998Approximate linear FM synchronization symbols for a bandwidth configurable OFDM modem
6407826551Input and output driver circuits for differential signal transfer, and differential signal transfer apparatus and methods
6417826521Rate adaptation using error vector magnitude
6427822110Eye diagram determination during system operation
6437809052Test circuit, system, and method for testing one or more circuit components arranged upon a common printed circuit board
6447809051Method to perform a statistical test in which the experiment is multinomial
6457804890Method and system for response determinism by synchronization
6467804889Channel estimation method and apparatus using linear interpolation scheme in orthogonal frequency division multiplexing system and receiver using the same
6477801206Encoded serial data bit error detector
6487801205Jitter injection circuit, electronics device, and test apparatus
6497792183Digital quality index for QAM digital signals
6507792181Linearity evaluation method using integrations weighted by probability density function, and circuit simulator, evaluation device, communication circuit, and program using the method
6517787530Multi-channel adapative quality control loop for link rate adaptation in data packet communications
6527783732Home adaptive transceiver for home networking communication system
6537783316Public safety communications network using asymmetric receive/transmit channels
6547782932Circuit and method for evaluating the performance of an adaptive decision feedback equalizer-based serializer deserializer and serdes incorporating the same
6557782931Methods, systems, and computer program products for automatic detection of an incorrect digital subscriber line modem and filter configuration at a customer premises
6567778319Jitter measuring apparatus, jitter measuring method and test apparatus
6577778318OFDM gain compression measurement
6587778317Method and device for detecting inductive elements in a communication line
6597778315Measuring instantaneous signal dependent nonlinear distortion in response to varying frequency sinusoidal test signal
6607774669Complex pattern generator for analysis of high speed serial streams
6617773667Pseudo asynchronous serializer deserializer (SERDES) testing
6627764730Low bias estimation of small signal-to-noise ratio
6637764067High voltage cable testing method
6647760796Transceiver for receiving and transmitting data over a network and method for testing the same
6657756199Simultaneous physical and protocol layer analysis
6667756197Built in self test (BIST) for high-speed serial transceivers
6677751470Time correlation of signal power to distortion characteristics
6687742519Method for rate matching in data transmission
6697738544Apparatus and method for measuring received signal strength indicator, and recording medium storing program embodying the same method
6707729418Testing circuit for measuring a frequency of signal output from clock generator
6717728605Wireless portable automated harness scanner system and method therefor
6727724812Method and apparatus for de-jittering a clock signal
6737724811Delay circuit, jitter injection circuit, and test apparatus
6747721164Method and apparatus for improved storage area network link integrity testing
6757720138Communication system
6767706457System and method for beamforming using rate-dependent feedback in a wireless network
6777702010System for monitoring the quality of a communications channel with mirror receivers
6787702008Method for determing crosstalk coupling and crosstalk determining unit for integration in digital data transmission systems
6797693213Method and apparatus for determining power required for data transmission in communication systems
6807684477Multi-protocol low latency automatic speed negotiation architecture for an embedded high speed serial interface in a programmable logic device
6817675966On-chip detection and measurement of data lock in a high-speed serial data link
6827672363Method of and system for determining the delay of digital signals
6837668235Jitter measurement algorithm using locally in-order strobes
6847668234Test signal generating apparatus for communications equipment and test signal generating method for communications equipment
6857660350High-speed multi-mode receiver
6867660349Transmit equalizer compensation for probe receivers
6877657418Modern testing system and method
6887653124Monitoring differential phase-shifted keying demodulation
6897646805Digital broadcasting receiving terminal with reception quality indicator
6907643545Calibrating automatic test equipment to account for magnitude and phase offsets

2009

6917636388Channel fault detection for channel diagnostic systems
6927636387Measuring apparatus and measuring method
6937634371System and method for analyzing jitter of signals
6947634000Noise estimator for a communications system
6957627790Apparatus for jitter testing an IC
6967627028Multi-port S-parameter and T-parameter conversion
6977627027Method for measuring locking time and frequency error in RF receiver
6987627026Threshold setting using piecewise linear approximation for channel diagnostic systems
6997627025Echo canceller gain control for channel diagnostic systems
7007623569Apparatus and method for estimating interference and noise in a communication system
7017623041Portable partial discharge detection apparatus and method thereof
7027620857Controllable delay device
7037613237Built-in test feature to facilitate system level stress testing of a high-speed serial link that uses a forwarding clock
7047609758Method of phase shifting bits in a digital signal pattern
7057609614Uplink modulation and receiver structures for asymmetric OFDMA systems
7067606343Phase-locked-loop with reduced clock jitter
7077606298Method of testing remote power line carrier pick-up coil
7087602843Apparatus and method for transmitting/receiving channel quality information in a communication system
7097596173Test apparatus, clock generator and electronic device
7107593459Wireless link simulator
7117590172Low bias estimation of small signal-to-noise ratio
7127590171Apparatus and method for estimating a carrier-to-interference-and-noise ratio in a communication system
7137590170Method and apparatus for measuring jitter
7147590087Methods for wireless data transmission between a base station and one or more transponders
7157587511Bandwidth monitoring method and its device
7167587012Dual loop clock recovery circuit
7177586996Method for controlling the power of the output signal from an amplifier system and the associated system
7187583727Single ended DMT test method for determining ADSL capability of cables
7197583091Printed circuit board, and backplane data transmission method
7207577203Minimizing non-deterministic noise by using wavelet transform
7217577190Method for prediction of a channel coefficient
7227573937Phase rotator control test scheme
7237567614Altering power consumption in communication links based on measured noise
7247567613Test method and apparatus for in-house wiring problems
7257564898System and method for selecting data rates of data signals
7267564897Jitter measuring apparatus, jitter measuring method and PLL circuit
7277564896Method for measuring multiple parameters of a signal transmitted by a signal generator
7287558336Semiconductor device, memory device and memory module having digital interface
7297558317Edge calibration for synchronous data transfer between clock domains
7307555038Transmission system, signal receiver, test apparatus and test head
7317554338Display for measuring phase noise characteristics
7327545858Method of measuring jitter frequency response
7337542507Decision feedback equalization input buffer
7347535984Clock adjustment apparatus and method thereof
7357529295Acquiring frequency and phase offset estimates using frequency domain analysis
7367529294Testing of multiple asynchronous logic domains
7377523365Dynamic determination of signal quality in a digital system
7387522662Electronic device including image forming apparatus
7397522661Method of producing a two-dimensional probability density function (PDF) eye diagram and Bit Error Rate eye arrays
7407522660Pulse pattern generating apparatus
7417519113Noise detection device
7427519112Testing device and method for providing receiver overload protection during transceiver testing
7437515877Communicating signals according to a quality indicator and a time boundary indicator
7447512177Method and apparatus for generating random jitter
7457508868Systems and methods for testing the performance of and simulating a wireless communication device
7467508219Apparatus and method for measuring loop insertion loss single-endedly
7477502410Method and system for controlling a notching mechanism
7487499406Method and apparatus for estimating and reporting the quality of a wireless communication channel
7497496137Apparatus for measuring jitter and method of measuring jitter
7507496136Phase locked loop and method for evaluating a jitter of a phase locked loop
7517487055Estimating of the jitter of a clock signal
7527486725Bit error rate tester and pseudo random bit sequences generator thereof
7537486724Codec compensation techniques for channel analysis applications
7547483477User interface for selection of sampling parameters in a logic analyzer whose data receivers are in groups each having a separate threshold that is common to the channels within each group
7557480840Apparatus, system, and method for facilitating port testing of a multi-port host adapter
7567480329Method of finding data dependent timing and voltage jitter for different bits in an arbitrary digital signal in accordance with selected surrounding bits
7577477685Method and systems for analyzing the quality of high-speed signals
7587477684Testing method, communication device, and testing system

2008

7597472057Detector for use in voice communications systems
7607466749Rate selection with margin sharing
7617466748Electronic measuring device for detecting a process variable, in particular a radar or ultrasonic filling level measuring device, and a method for operating a measuring device of this type
7627460592Apparatus for measuring jitter and method of measuring jitter
7637460591Method and apparatus using re-sampled tie records to characterize jitter in a digital signal
7647460590Handheld communication tester and method for testing direct serial communication capability of an intelligent electronic device in a power system
7657460589Eye monitoring and reconstruction using CDR and sub-sampling ADC
7667457354Method and device of analyzing a signal transmitted via a communication link
7677456696Circuit and method of compensating for signal delay in a cable
7687453933Method of estimating a signal-to-interference+noise ratio (SINR) using data samples
7697453931Method for measuring the modulation error of digitally modulated high frequency signals
7707453927Method and apparatus to compensate AM-PM delay mismatch in envelope restoration transmitter
7717450633Wander generator, and digital line tester and phase noise transfer characteristic analyzer using the same
7727430237Decoderless bit-error-rate estimation for convolutionally encoded transmissions in wireless systems
7737430236Communication interface for a path measuring device
7747418031Automatic baud rate determination
7757415063Method to estimate noise in data
7767411999Method for selecting and extracting an eye diagram opening for subsequent processing
7777400673Method of determining and displaying powers of code channels and analysis device
7787397871Estimation of single-to-noise ratio by processing measured error vector magnitude
7797397847Testing device for testing electronic device and testing method thereof
7807386042Jitter measurement
7817382825Method and apparatus for integrated channel characterization
7827379495Adaptive signal latency control for communications systems signals
7837379493Signal analyzer for detecting distortions in signals
7847376178Low bias estimation of small signal-to-noise ratio
7857372901Method and apparatus for modem rate adaptation
7867369606Phase error detector using I/Q interference cancellation
7877369605Method and device for injecting a differential current noise signal into a paired wire communication link
7887369604Time correlation of data acquisition samples from independent systems in a logic analyzer
7897368919Wireless portable automated harness scanner system and method therefor
7907366233Assembly for measurement demodulation and modulation error detection of a digitally modulated receive signal
7917362801Method for accurate estimation of noise for data modems
7927362800Auto-configured equalizer
7937362799Method and apparatus for communication signal resolution
7947359436Method for automatic detection of the data rate in a network, particularly a CAN bus type network, and for configuration to the detected data rate, corresponding device
7957359435Method of evaluation of a bit error rate measurement for indication of a channel quality
7967346102Channel with domain crossing
7977346101Spectrum measurement system comprising PC and power meter
7987343535Embedded testing capability for integrated serializer/deserializers
7997339986Method of monitoring the quality of a communications channel
8007339983Apparatus and method for detecting a power ratio between a traffic channel and a pilot channel in a mobile communication system
8017336732Carrier frequency detection for signal acquisition
8027336703Device and method for measuring a received signal power in a mobile communication system
8037333567Digital detector utilizable in providing closed-loop gain control in a transmitter
8047333537System for monitoring the quality of a communications channel with mirror receivers
8057331004Data storage system analyzer having self reset
8067330504Method and apparatus for low power-rise power control using sliding-window-weighted QoS measurements
8077324588Apparatus, and associated method, for testing a mobile terminal in test conditions that emulate an operating environment
8087315573Channel monitoring for improved parameter selection in a communication system

2007

8097313392Mobile station apparatus capable of displaying better communication locations for power saving and method of the same
8107313179Minimizing windowing effects in particular for signal recovery
8117313178Transceiver for receiving and transmitting data over a network and method for testing the same
8127308004Method and apparatus of multiplexing and demultiplexing communication signals
8137305025Measurement instrument and measurement method
8147301996Skew cancellation for source synchronous clock and data signals
8157298396Apparatus and method for monitoring transmission systems using embedded test signals
8167295604Method for determining jitter of a signal in a serial link and high speed serial link
8177292625Downstream power calibration method on cable modem
8187277499Additive DC component detection included in an input burst signal
8197277478Method for transmitting data between a base station and a transponder
8207274735Constellation selection in a communication system
8217260145Method and systems for analyzing the quality of high-speed signals
8227254170Noise and channel estimation using low spreading factors
8237254167Constellation-multiplexed transmitter and receiver
8247248643Distortion compensator
8257248627Method and apparatus for estimating the link quality of a communication channel
8267230981Integrated data jitter generator for the testing of high-speed serial interfaces
8277221389Automatic equalization of video signals
8287218670Method of measuring the performance of a transceiver in a programmable logic device
8297215702Signal level detection apparatus and detection method, and signal level indication apparatus
8307209517Method and apparatus for estimating a maximum rate of data and for estimating power required for transmission of data at a rate of data in a communication system
8317206339Wonder generator, digital line tester comprising the same, and phase noise transfer characteristic analyzer
8327203225Method of phase controlling of a data signal, counter clock circuit arrangement, and interface device
8337200171System and method for estimating initial channel quality in a multirate system
8347200170High speed I-O loopback testing with low speed DC test capability
8357190718Method and apparatus for determining a receiver sampling phase for use in diagnosing a channel
8367184470Method and apparatus for measurement of jitter
8377184469Systems and methods for injection of test jitter in data bit-streams
8387180965Phase estimation and compensation in orthogonal frequency division multiplex (OFDM) systems
8397180937Method for determining imbalance in a vector signal modulator
8407177351Data transmission with non-uniform distribution of data rates for a multiple-input multiple-output (MIMO) system
8417170929Digital signal transmission system and method of displaying transmission condition in digital signal transmission system
8427170928Determination of data rate, based on power spectral density estimates
8437158564Device for generating a digitally modulated test signal
8447158563Dynamic digital communication system control

2006

8457154943Method and circuit of digital measurement of the phase of a sinusoidal signal
8467154942Method and apparatus for automated correlation of digital modulation impairment
8477151379Techniques to test transmitted signal integrity
8487137061Method and device for signaling a transmission fault on a data line
8497133446Performance indicator for wireless digital signal reception
8507130340Noise margin self-diagnostic receiver logic
8517130339Method and apparatus for frame rate determination without decoding in a spread spectrum receiver
8527126646Device and method for tracking phase error in digital TV receiver
8537123888Variable communication system
8547110446Method and apparatus for reducing effect of jitter
8557110445Oversampled clip-shaping
8567103274Cross-connect apparatus
8577095781Polyphase filter with stack shift capability
8587088764Method for determining signal quality of simultaneously received multiple channels of data
8597082159Methods and arrangements in a telecommunications system
8607062164Detection of data transmission rates using passing frequency-selective filtering
8617061979System and method for determining the data rate of a digital data stream
8627042229System and method for on line monitoring of insulation condition for DC machines
8637035325Jitter measurement using mixed down topology
8647023911Method and apparatus for altering a round trip delay measurement in a telecommunication system to accurately position an echo canceller
8657019532Device and method for error diagnosis at digital outputs of a control module
8667019531Procedure and device for the evaluation of the quality of a cable
8677016403Apparatus and method for determining the quality of a digital signal
8687012955Method and apparatus for direct sequence spread spectrum receiver using an adaptive channel estimator
8697006561Apparatus and method for detecting baudrate in a universal asynchronous receiver/transmitter
870699014350% duty-cycle clock generator
8716990142Process and device for estimating the impulse response of an information transmission channel, in particular for a cellular mobile telephone
8726988207Scan insertion testing of ASICs

2005

8736961370Sweep method using digital signals
8746959260System and method for device co-location discrimination
8756956383Method and apparatus for implementing automated electronic package transmission line characteristic impedance verification
8766952472Dynamically estimating echo return loss in a communication link
8776949933Apparatus and method for monitoring electrical cable chafing via optical waveguides
8786947857Optical sequence time domain reflectometry during data transmission
8796944681Probing algorithm for foundation fieldbus protocol
8806944289Delay insertion for echo cancellation, with echo supression, in a communication network
8816934655Method and apparatus for transmission line analysis
8826934327Acquisition of a continuous-phase modulation waveform
8836928106Phy control module for a multi-pair gigabit transceiver
8846914963Determining the composition of subscriber loops from frequency domain measurements
8856914884Communication control circuit
8866909978Signal pre-processing for estimating attributes of a transmission line
8876901538Method, system, and recording medium of testing a 1394 interface card
8886901336Method and apparatus for supplying power, and channeling analog measurement and communication signals over single pair of wires
8896901137Detecting faults in subscriber telephone lines
8906898238Apparatus for, and method of, reducing power dissipation in a communications system
8916895081Predicting performance of telephone lines for data services
8926885954Sequence time domain reflectometry using complementary golay codes
8936885746Crosstalk identification for spectrum management in broadband telecommunications systems
8946876725Single ended line probing in DSL system
8956870899ADSL loop qualification systems and methods
8966865256Method and apparatus for determining properties of a transmission channel
8976865222Method and apparatus for testing a serial transmitter circuit
8986865221Systems and methods for loop length and bridged tap length determination of a transmission line
8996859045Cable-testing adapter
9006859044Method and architecture for fault protection on a broadband communications network power passing tap
9016847267Methods for transmitting a waveform having a controllable attenuation and propagation velocity
9026842012Modeling and calibrating a three-port time-domain reflectometry system

2004

9036836124Capacitance monitoring systems
9046826155Apparatus and method for facilitating standardized testing of signal lines
9056819744System and circuitry for measuring echoes on subscriber loops
9066819709Startup protocol for high throughput communications system
9076816575Single ended loop loss measurement by frequency domain reflectometry-based signal processing
9086801601Single ended line probing in DSL system using transformerless hybrid
9096801504Node device of ATM communication network and method of failure alarm notification
9106798831Testing system
9116798830Methods and apparatus for generating a test signal for xDSL devices
9126792600Method and apparatus for just in time compilation of instructions
9136791337DC attenuation meter
9146782043Method and apparatus for estimating the length of a transmission line
9156771699Method for rapid carrier-frequency offset acquisition using a periodic training sequence
9166768777Method and apparatus for calculating the number of very high speed digital subscriber line nodes
9176748050Method and apparatus for performing either tone analysis on a local looped-back communications path or utilizing a hybrid reflection based looped-back test to test integrity
9186744854Detection of bridge taps by frequency domain reflectometry-based signal processing with precursor signal conditioning
9196744813System and method for estimating noise characteristics in the presence of non-stationary noise
9206741676Determining the physical structure of subscriber lines
9216738419Dynamic regulation of power consumption of a high-speed communication system
9226734684Spectral shaping circuit
9236724859Method for determining subscriber loop make-up by subtracting calculated signals
9246718513Fault monitoring system and fault reporting method
9256707305Tone generator and probe
9266697768Adaptive method and apparatus for transmission line analysis
9276693435Method and apparatus for measuring a measuring signal and reflected measuring signal
9286691262Method and apparatus for quality evaluation of cable circuit
9296691051Transient distance to fault measurement
9306690722Method for characterizing frequency translation devices
9316687632Testing of CATV systems
9326687336Line qualification with neural networks
9336687289Method for measuring the attenuation in digital transmission lines

2003

9346658052Systems and methods for establishing a diagnostic transmission mode and communicating over the same
9356654411Method and system for estimating error rate of a communication channel over a wide dynamic range
9366647067Method and device for reducing crosstalk interference
9376647065Process aimed at the extraction of electrical signals, without breaking a line pair
9386647058Performance customization system and process for optimizing XDSL performance
9396628754Method for rapid noise reduction from an asymmetric digital subscriber line modem
9406621562Time domain reflectometer with wideband dual balanced duplexer line coupling circuit
9416611595METHOD FOR GENERATING MEASURING SIGNALS FOR MEASURING TRANSMISSION PROPERTIES OF TRANSMISSION LINKS MUTUALLY INFLUENCING ONE ANOTHER WITH CROSSTALK IN TELECOMMUNICATIONS SYSTEMS, PARTICULARLY OF HANDSFREE EQUIPMENT
9426611148Apparatus for the high voltage testing of insulated conductors and oscillator circuit for use with same
9436608488Apparatus for high voltage testing of insulated conductors and oscillator circuit for use with same
9446606719Method and arrangement to estimate transmission channel characteristics
9456606028Apparatus and method for supervision
9466593750Interface for cable testing
9476580752Alternative configurations for an ADSL system operating in a time duplex noise environment
9486570394Tests for non-linear distortion using digital signal processing
9496556589Network transceiver for steering network data to selected paths based on determined link speeds
9506553098Apparatus and method for assessing leakage from cable networks
9516553075Method and apparatus for determining crosstalk
9526545483Analyzer sensor
9536538865Fault-detecting device for communication system
9546538451Single ended measurement method and system for determining subscriber loop make up
9556532215Device and method for network communications and diagnostics
9566531879Method and apparatus for delay-line time-domain reflectometry
9576529961Network transceiver having media independent interface operable in a general purpose serial interface mode
9586512378Cable testing systems
9596507199Method for measuring the operating properties of a subscriber line module for high-bit-rate data transmission

2002

9606501830Method of and device for measuring echo parameters on telephone lines
9616496014Cable tester error compensation method and apparatus
9626487276Detecting faults in subscriber telephone lines
9636477238Loop certification and measurement for ADSL
9646477199Dynamic regulation of power consumption of a high-speed communication system
9656466649Detection of bridged taps by frequency domain reflectometry
9666466614Method and apparatus for classifying a baseband signal
9676466033Self powered DSL port continuity checker
9686463126Method for qualifying a loop for DSL service
9696463097Rate detection in direct sequence code division multiple access systems
9706463041Apparatus for, and method of, reducing noise in a communications system
9716459275Detection of devices on a local area network
9726456694Method for prequalifying subscriber lines for high speed data service
9736456675Diversity reception employing periodic testing
9746452965Fault detection circuit in loop network
9756441695Methods for transmitting a waveform having a controllable attenuation and propagation velocity
9766438163Cable length and quality indicator
9776417672Detection of bridge tap using frequency domain analysis
9786411108Noncontact signal analyzer
9796389109Fault conditions affecting high speed data services
9806385297Method and apparatus for qualifying loops for data services
9816381269Test system with signal injection network for characterizing interference and noise tolerance in a digital signal link
9826363111Control loop for adaptive multilevel detection of a data signal
9836341142Serial data transceiver including elements which facilitate functional testing requiring access to only the serial data ports, and an associated test method

2001

9846304598Apparatus for, and method of, reducing power dissipation in a communications system
9856298118System and method for processing of communication line test signals, such as enhancement processing
9866297647Crosstalk test unit and method of calibration
9876292541Line shunt and ground fault apparatus method
9886292540Battery injection and loop supervision for DSL environment
9896292539Method and apparatus for digital subscriber loop qualification
9906291983Selecting and monitoring signal lines with spurious transients in broadband network
9916289047Dynamic regulation of power consumption of a high-speed communication system
9926285876Test unit with programmable transmit timing for telecommunication systems
9936285653Method and apparatus to measure far end crosstalk for the determination of equal level far end crosstalk
9946282265Two-ended wireline pair identification system
9956278357Apparatus and method for implementing digital communications on a power line
9966269114Monitor particularly suited for Naval Tactical Data System (NTDS) interfaces types A and B
9976266395Single-ended subscriber loop qualification for xDSL service
9986266347System and method for modifying symbol duration for the efficient transmission of information in a time duplex noise environment
9996259900Radio frequency signal folding-back transmitting/receiving circuit and radio transmitting/receiving apparatus for use therewith
10006259258Method and test unit for far end crosstalk measurements
10016246717Measurement test set and method for in-service measurements of phase noise
10026236714Transmit power control for DSL modems in splitterless environment
10036236645Apparatus for, and method of, reducing noise in a communications system
10046233558Method and apparatus for simultaneous tracing of multiple transmission lines
10056229847Signal quality measurement device
10066222877Method for performance monitoring of data transparent communication links
10076222876Detecting valid data patterns for adapting equalization gain and offset for data transmissions
10086215855Loop certification and measurement for ADSL
10096201796Startup protocol for high throughput communications systems
10106198292Crosstalk test unit and method of calibration
10116177801Detection of bridge tap using frequency domain analysis
10126172992Measuring device for the interface of a transmission link with full-duplex transmission in two-wire common band operation
10136169996Remote observation system having transmission line for isolating local area network at data gathering site from remote monitoring site, and having provision for data request from remote monitoring site via the transmission line

2000

10146154447Methods and apparatus for detecting and locating cable failure in communication systems
10156144290Control device for the emission of carrier currents on a low voltage network
10166141634AC power line network simulator
10176121832Intermediate amplifier device for a transmission network
10186115389Auto-negotiation for multiple ports using shared logic
10196104782Method for measuring quality determining parameters of a firmly connected communications transmission link
10206064212Method for determining the transmission characteristics of an electric line
10216060890Apparatus and method for measuring the length of a transmission cable
10226038253Data receiver with symbol rate discrimination and statistical analysis functions
10236037780Device for measuring transmission delay time in a transmission cable
10246011783Method and apparatus for monitoring echo cancellation performance within a telephone communications network

1999

10255999900Reduced redundancy test signal similar to natural speech for supporting data manipulation functions in testing telecommunications equipment
10265943392Device for measuring echo return loss in a two-two wire line system
10275940792Nonintrusive testing of telecommunication speech by determining deviations from invariant characteristics or relationships
10285939887Method for measuring spectral energy interference in a cable transmission system
10295937005Error rate measurement apparatus for a mobile radio communications system
10305923849Method of auditing communication traffic
10315892756Portable telecommunication network testing device
10325889835Method and system for testing a transmission line in a non-addressable network for continuity
10335870429Apparatus method, and software modem for utilizing envelope delay distortion characteristics to determine a symbol rate and a carrier frequency for data transfer
10345864581Apparatus for measuring the signal transit time of a digital transmission device

1998

10355821760Method and apparatus for measuring near-end cross-talk in patch cords
10365809110Technique of controlling telephone calls
10375794188Speech signal distortion measurement which varies as a function of the distribution of measured distortion over time and frequency
10385764694Self-testing and evaluation system
10395751152Method and apparatus for concurrently measuring near end crosstalk at two ends of a cable
10405748876System and method for testing acoustic modems with semantically encoded waveforms
10415740200Apparatus for measuring transmission time utilized for data collection system
10425731706Method for efficient calculation of power sum cross-talk loss
10435726993Signal detector for telephone line repeator remote loopback system
10445714876In-service serial digital source signal-level and cable-length measurement

1997

10455698985Cross-talk measurement instrument with source indication as a function of distance
10465694421Frequency-selective interference signal detecting apparatus and method thereof
10475672974Returned reference compatible, straightaway envelope delay measurement instrument and method
10485657346Transmission line driver test integrity circuit
10495646955Apparatus for measuring cycle to cycle jitter of a digital signal and method therefor

1996

10505570029Cable crosstalk measurement system
10515563921Jitter detection apparatus using double-PLL structure
10525555274Phantom data link for digital transmission lines
10535548222Method and apparatus for measuring attenuation and crosstalk in data and communication channels
10545539321Apparatus for measuring the crosstalk in a cable
10555532603Cross-talk measurement apparatus with near-end compensation
10565524043Remotely connectable maintenance termination unit
10575515398Modem line probing signal techniques
10585511119Method and system for compensating for coupling between circuits of quaded cable in a telecommunication transmission system
10595509029Serial data transmissions device and terminal unit for the same
10605502391Apparatus for measuring the crosstalk in a cable
10615481563Jitter measurement using a statistically locked loop

1995

10625479439Analog service channel port for digital interface
10635452320Method for detecting fine frequency deviation
10645442697Digital data loopback device
10655436953Digital longitudinal balance measurement
10665402073Near-end communications line characteristic measuring system with a voltage sensitive non-linear device disposed at the far end

1994

10675303202Method for detecting breaks in geophone cables for seismic data acquisition system
10685301207Test apparatus and process for digital data service system

1993

10695274367Device for in-service monitoring of communication transmission equipment
10705262771Method for addressing processor units
10715228060Control unit for controlling modem used in receiver
10725224149Testing system for digital transmission lines
10735222119Communication system and a method, to detect a power exposure of a communication line
10745202882Method for checking transmission properties of a subscriber line circuit

1992

10755166673Method for controlling and/or monitoring a communication transmission equipment for transmission errors for the implementation of the method
10765153808Procedure and apparatus for protection of a data transmission network
10775150111Apparatus for and method of detecting an abnormality in a signal
10785150064Method and apparatus for determining parameters of a transmission line deployed in a seawater environment
10795128619System and method of determining cable characteristics
10805105438Remotely accessing intelligent network channel terminating equipment device

1991

10815063351Digital signal processing relating to near-end crosstalk cable measurements
10824998069Loopback tester for testing field replaceable units
10834984250DC termination circuit for subscriber cables

1989

10844870675Remote testing of metallic loops with a trans hybrid signal
10854853950Impedance measuring apparatus for R.F. baseband signals over two wire telephone lines
10864845735Non-interfering method for measuring propagation delay of telecommunications network and apparatus for accomplishing same
10874821267Monitoring apparatus for monitoring the operating condition of transmission facilities of communications transmission technology
10884810898RF network isolation switch
10894807274Telephone line quality testing system

1988

10904751724Automatic telephone line fault locator
10914731550Circuit having a feed circuit for supplying current to a load resistor
10924729126Method and apparatus for supervising the accessing and testing of communication systems

1987

10934710969CATV testing system
10944658099Apparatus and method for remotely determining the presence of unauthorized surveillance devices on a communications line
10954654862Digital signal transmission cable noise analyzer
10964639557Remote testing system for electrical circuits

1986

10974630228Transmission line analyzer for automatically identifying the severities and locations of multiple mismatches
10984629836Method and apparatus for accessing communication systems
10994611101Method and apparatus for testing communication systems
11004611099Cable analyzer with D. C. functions
11014590336Special circuit transfer via cable analyzer
11024580016Method and apparatus for checking the integrity of a communications channel in a voice store and forward system
11034574167Method and apparatus for configurable line testing
11044570037Fault detection in a telephone cable pressure monitoring system
11054568802VF Line fault isolation and diagnostic apparatus and method

1985

11064549049Arrangement for testing a device provided with an echo canceller
11074529970Supervision system for monitoring the integrity of a transmission line
11084493951Device for use in testing a modem coupled to a telephone line by modular connectors

1984

11094486627Cable load status detector
11104462058Switching apparatus for devices for alternating current parallel remote feed
11114458113Conductor pair identifier apparatus
11124451712Tester for remote controlled radio systems
11134449157Surge protection for signal transmission systems

1983

11144417337Adaptive multitone transmission parameter test arrangement
11154408345Remote line monitoring method and device for CATV system
11164396809Maintenance termination unit
11174373121Maintenance termination device

1981

11184307267Testing loaded transmission lines
11194303808Locating noise in communications systems
11204302843Method and apparatus for measuring transmission characteristics of a test object during communication gaps
11214300233Noise assessment of PCM regenerators
11224287469Process and circuit arrangement for the measuring of coefficients of message-transmission equipment
11234273970Intermodulation distortion test
11244264959Testing procedure and circuit for the determination of frequency distortions and group delay time distortion of a test object
11254258236Remote telephone line switching and testing
11264253131Repeater overload circuit
11274245320Method and device for measuring the slope of the envelope delay characteristic of a transmission channel and their application to an automatic equalizer selection technique

1980

11284229626Loop fault sectionalization
11294220914AM-PM Conversion for measuring delay distortion
11304209666Multiplexing system line fault isolation and identification
11314186282Method and apparatus for measuring telephone line characteristics

1979

11324161008Protection circuitry for cable transmission system
11334149044Method and apparatus for graphically displaying amplitude and phase jitter
11344143251Circuitry and method for locating buried cable splices
11354139745Telephone line test system

1978

11364113998Testing electrically conductive lines to determine electrical characteristics thereof
11374110572Method and apparatus for testing transmission lines
11384105995Digitally controlled transmission impairment measuring apparatus
11394096361Test apparatus for obtaining impedance settings for hybrid balance networks
11404087658Apparatus and method for determining frequencies for system maximum and minimum immittances
11414087657Testing of inductively loaded transmission lines for correct loading
11424087656Testing of inductively loaded transmission lines for correct loading
11434078255Sequence generator having amplitudes and phases of spectral components randomly distributed
11444072899RF leak detector

1977

11454061892Instruments and methods for measuring characteristics of only a selected portion of a transmission channel
11464061881Method and apparatus for generating a number of weakly correlated pseudorandom pulse trains
11474051333Tip and ring conductor voltage tester
11484045624Continuous monitoring in carrier telephone systems
11494042794Method and means for detecting an outgoing failure in a bidirectional communications span and looping the same in response thereto
11504041255Switching circuit for telecommunications lines
11514041254Telephone line characteristic display
11524039769Instrument and method for measuring envelope delay in a transmission channel
11534038501Apparatus and method for automatically connecting to the individual conductors of a multiconductor cable
11544029913Remote accessing system for telephone lines
11554028622Selective intermodulation distortion measurement
11564028507Apparatus for applying particular voltages to three-terminal circuits and measuring resulting current flows for the purpose of determining circuit characteristics
11574025736Apparatus for measuring the value of a variable condition
11584021625Instruments and methods for measuring characteristics of only a selected portion of a transmission channel
11594006456Loop fault location and isolation
11604006319Foreign potential checker

1976

11613988678Circuit arrangement for the measuring of group delay and attenuation distortions
11623985980Triggered display for telephone line characteristic measuring instrument
11633983340Automatic span line switch
11643978282Apparatus and method for measuring the transmission characteristics of a network
11653976835Supervisory systems for telecommunication line transmission system
11663975600Telephone line splicing apparatus
11673973112System for determining transfer function
11683970926Method and apparatus for measuring the group delay characteristics of a transmission path
11693968427Group delay measurement apparatus and method
11703963992Linear AGC circuit with controlled duty cycle sampling means
11713959605Circuit for detecting loss of telephone line voltage
11723956601Telecommunications analyzer
11733952189Complex analog waveform generator
11743952163Method and apparatus for testing in FDM system
11753943305Telephone line control system
11763941950Telephone line testing instrument having a supervising capability
11773940703Intermodulation distortion analyzer
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017