| Patents for H04L 27 - Modulated-carrier systems (89,721) |
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| 03/17/1992 | CA1297545C Four state phase shift modulator, in particular for amplitude modulation of two carriers in quadrature with a large number of states |
| 03/12/1992 | CA2051021A1 Method and circuit arrangement for producing a qpsk signal on which a carrier signal is superposed |
| 03/11/1992 | EP0474615A2 D.C. offset compensation in a radio receiver |
| 03/10/1992 | US5095497 Technique for achieving the full coding gain of encoded digital signals |
| 03/10/1992 | US5095392 Digital signal magnetic recording/reproducing apparatus using multi-level QAM modulation and maximum likelihood decoding |
| 03/10/1992 | CA1297196C Modem with improved digital signal processor |
| 03/10/1992 | CA1297170C Arrangement for equalizing and demodulating binary continuous-phase angle-modulated data signals with a modulation index 0.5. |
| 03/10/1992 | CA1297159C Coded modulation communication system |
| 03/05/1992 | DE4110138C1 Carrier recovery for optical PSK homodyne receiver - by rotating local oscillator phase 90 deg. for one synchronisation bit period to produce phase error signal |
| 03/04/1992 | EP0473299A2 Solid state power amplifier with dynamically adjusted operating point |
| 03/04/1992 | EP0472926A2 Method and apparatus for detecting repetitive sequences |
| 03/04/1992 | CN1059240A Communication signal having time domain dilat component |
| 03/03/1992 | US5093848 Method of controlling the frequency of a coherent radio receiver and apparatus for carrying out the method |
| 03/03/1992 | US5093847 Adaptive phase lock loop |
| 03/03/1992 | US5093846 Signal acquisition using modulation by a preselected code group |
| 03/03/1992 | US5093637 Modulation device with input signal modification for correction of amplifier nonlinearities |
| 03/03/1992 | US5093636 Phase based vector modulator |
| 02/28/1992 | CA2049838A1 Qam digital microwave link demodulator |
| 02/27/1992 | DE4026878A1 Digital transmitter module pref. for MSK signal shaping - incorporates selected frequency registers and multiplexers feeding digital synthesiser for free choice of frequency shift |
| 02/26/1992 | EP0472383A2 Apparatus and method for demodulating multiplexed signals |
| 02/26/1992 | EP0471799A1 Time domain radio transmission system. |
| 02/25/1992 | WO1992003892A1 Dual mode automatic gain control |
| 02/25/1992 | US5091921 Direct conversion receiver with dithering local carrier frequency for detecting transmitted carrier frequency |
| 02/25/1992 | US5091919 Transmitter arrangement for digitally modulated signals |
| 02/25/1992 | US5091918 Equalizers |
| 02/23/1992 | CA2049539A1 Demodulating multiplexed signals |
| 02/20/1992 | WO1992003002A1 Novel spread spectrum codec apparatus and method |
| 02/19/1992 | EP0471069A1 Multi-frequency differentially encoded digital communication for high data rate transmission through unequalized channels |
| 02/19/1992 | CN1058876A Cable television radio frequency subscriber data transmission apparatus and rf return method |
| 02/18/1992 | US5090028 Method of and apparatus for synchronization by means of correlation |
| 02/18/1992 | US5090027 Coherent PSK demodulator with adaptive line enhancer |
| 02/18/1992 | US5090026 Communications system for data transmission |
| 02/18/1992 | US5090025 Token ring synchronization |
| 02/18/1992 | US5089822 Interrogation signal processor for air traffic control communications |
| 02/13/1992 | DE4028927A1 Coding and transmission of originals and images - combines code elements of several lines or channels into code word |
| 02/12/1992 | EP0470505A2 Synchronous FSK detection |
| 02/12/1992 | EP0470450A2 Fine timing recovery for QAM modem receiver |
| 02/12/1992 | CN1058680A Direct phase digitization |
| 02/11/1992 | US5088111 Modulation and demodulation system employing AM-PSK and FSK for communication system using digital signals |
| 02/11/1992 | US5088110 Baseband-controlled passband equalizing arrangement |
| 02/11/1992 | CA1295755C Rapid reference acquisition and phase error compensation for radio transmission of data |
| 02/11/1992 | CA1295741C Modem and method using multidimensional coded modulation |
| 02/11/1992 | CA1295701C Multi-level quadrature apmlitude modulation and demodulation system |
| 02/11/1992 | CA1295700C Method of quadrature-phase amplitude modulation |
| 02/11/1992 | CA1295686C Time domain radio transmission system |
| 02/07/1992 | WO1992002997A1 Reciprocal mode saw correlator method and apparatus |
| 02/07/1992 | CA2088977A1 Reciprocal mode saw correlator method and apparatus |
| 02/06/1992 | WO1992002093A1 Programmable digital frequency-phase discriminators |
| 02/06/1992 | WO1992002091A1 Token ring synchronization |
| 02/06/1992 | WO1992002082A1 Digital demodulator generating level, carrier, and code error signals |
| 02/06/1992 | WO1992001948A2 Technique for demodulating and decoding mls dpsk transmissions using a digital signal processor |
| 02/06/1992 | CA2086550A1 Technique for demodulating and decoding mls dpsk transmissions using a digital signal processor |
| 02/05/1992 | EP0469622A2 Method and apparatus for demodulating a biphase-coded signal |
| 02/05/1992 | EP0469303A2 Delay equalization emulation for high speed phase modulated direct digital synthesis |
| 02/05/1992 | EP0469233A2 Digital synthesizer with phase memory |
| 02/04/1992 | US5086437 Agc device for producing a gain controlled and d.c. offset removed signal |
| 02/04/1992 | US5086241 Costas loop carrier wave reproducing circuit |
| 02/04/1992 | CA1295432C Method and a system for coding and decoding data for transmission |
| 02/04/1992 | CA1295413C Video optimized modulator-demodulator |
| 01/31/1992 | WO1992002991A1 Dual mode automatic frequency control |
| 01/28/1992 | US5084903 Modulation and demodulation system employing AM-PSK and QPSK communication system using digital signals |
| 01/28/1992 | US5084902 Jitter canceller with an initial value setting circuit for an adaptive filter |
| 01/28/1992 | US5084901 Sequential chirp modulation-type spread spectrum communication system |
| 01/28/1992 | US5084686 Phase splitter |
| 01/28/1992 | US5084681 Digital synthesizer with phase memory |
| 01/28/1992 | US5084669 Direct phase digitization |
| 01/27/1992 | WO1992002092A1 Coded qam system |
| 01/24/1992 | WO1992002094A1 Sawc phase-detection method and apparatus |
| 01/24/1992 | CA2087712A1 Sawc phase-detection method and apparatus |
| 01/23/1992 | WO1992001312A1 Antiblooming structure for solid-state image sensor |
| 01/22/1992 | EP0467712A2 Phase demodulator for psk-modulated signals |
| 01/22/1992 | EP0467509A2 Integrating voltage to frequency converter |
| 01/22/1992 | EP0467446A1 Method of adaptively setting decision thresholds in a receiver for multilevel digital signals |
| 01/22/1992 | EP0467387A2 Costas loop carrier wave reproducing circuit |
| 01/22/1992 | EP0467358A2 A demodulator and a polarization diversity receiver for coherent optical communication provided with the demodulator |
| 01/22/1992 | EP0467306A2 Apparatus and method for demodulating a digital modulation signal |
| 01/22/1992 | EP0467266A2 Direct modulation phase shift keying (DM-PSK) transmission system |
| 01/22/1992 | EP0467239A2 An encryption system based on Chaos theory |
| 01/22/1992 | EP0466949A1 Device for contactless transfer of data and energy and its use |
| 01/21/1992 | US5083304 Automatic gain control apparatus and method |
| 01/21/1992 | CA1294686C2 Multipurpose digital integrated circuit for communication and control newtwork |
| 01/21/1992 | CA1294685C2 Multipurpose digital integrated circuit for communication and control netowrk |
| 01/21/1992 | CA1294684C2 Multipurpose digital integrated circuit for communication and control network |
| 01/16/1992 | DE4100099C1 Carrier recover in QAM receiver - generates phase correction signal for oscillator when QAM reception signal value arrives in active zone |
| 01/15/1992 | EP0466182A2 Optical communication apparatus using intensity modulation |
| 01/15/1992 | EP0465851A2 QAM receiver compensating both linear and non-linear distortion |
| 01/15/1992 | EP0465782A1 Convolutionally-encoded quadrature frequency-modulation system |
| 01/15/1992 | EP0345282A4 Spectrally efficient digital modulation method and apparatus |
| 01/14/1992 | US5081712 Method and apparatus for obtaining phase in sensitive and/or polarization-insensitive optical heterodyne receiver for a fsk-modulated transmission signal |
| 01/14/1992 | US5081653 Automatic gain control circuit for multilevel duobinary AM/PSK modulated signals |
| 01/14/1992 | US5081652 Offset correction |
| 01/14/1992 | US5081650 Data receiver |
| 01/14/1992 | US5081649 Method of quadrature-phase amplitude modulation |
| 01/14/1992 | US5081647 Communication of a voice signal via continuous quadrature amplitude modulator |
| 01/14/1992 | US5081645 Novel spread spectrum codec apparatus and method |
| 01/14/1992 | US5081642 Reciprocal saw correlator method and apparatus |
| 01/09/1992 | WO1992000639A1 System and method for generating signal waveforms in a cdma cellular telephone system |
| 01/09/1992 | WO1992000633A1 Optimal signal synthesis for distortion cancelling multicarrier systems |
| 01/08/1992 | EP0464814A2 Non-coherent PSK demodulator |
| 01/07/1992 | US5079513 Demodulator and radio receiver having such a demodulator |