| Patents for H04L 27 - Modulated-carrier systems (89,721) |
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| 09/29/1992 | WO1992017972A1 Frame synchronisation for qam |
| 09/29/1992 | WO1992017971A1 Tcm scheme with fractional bit rates, framing signals and constellation shaping |
| 09/29/1992 | US5151926 In the receiver of a cellular telephone |
| 09/29/1992 | US5151925 Coherent demodulation method for a digitally modulated signal having a continuous phase and a constant envelope |
| 09/29/1992 | US5151664 Low-distortion radio-frequency amplifying apparatus |
| 09/29/1992 | US5150529 Signal transmission system for machine tools, inspection machines, and the like |
| 09/29/1992 | CA1308197C Method and apparatus for combining encoding and modulation |
| 09/28/1992 | CA2063954A1 Method and system for processing the preechos of an audio-digital signal coded by frequency transformation |
| 09/23/1992 | EP0505223A1 Apparatus for transmission of digital information on a line of a power distribution network |
| 09/23/1992 | EP0505048A2 Optical FSK modulator |
| 09/23/1992 | EP0504905A2 Carrier recovery control with sequential FEC sync detection and frame sync detection |
| 09/23/1992 | EP0504890A2 Demodulator for demodulating a pi/4-shift DQPSK signal |
| 09/23/1992 | EP0504374A1 Static control overlayers on opto-electronic devices |
| 09/23/1992 | EP0495921A4 Stabilizing circuit for feedback rf amplifier |
| 09/22/1992 | US5150384 Carrier recovery method and apparatus having an adjustable response time determined by carrier signal parameters |
| 09/22/1992 | US5150383 Asynchronous quadrature demodulator |
| 09/22/1992 | US5150382 Frequency error detecting apparatus |
| 09/22/1992 | US5150381 Transmitting/receiving digital data sequence via a channel |
| 09/22/1992 | US5150380 Receiver capable of removing both intersymbol interference and frequency offset |
| 09/22/1992 | US5150377 Direct sequence spread spectrum (dsss) communications system with frequency modulation utilized to achieve spectral spreading |
| 09/22/1992 | US5150070 Demodulator for biphase, suppressed-carrier psk signals |
| 09/22/1992 | CA2063663A1 Receiver employing correlation technique for canceling cross-talk between in-phase and quadrature channels prior to decoding |
| 09/22/1992 | CA1307848C Signal constellations |
| 09/20/1992 | WO1992017010A1 Automatic frequency selection in a bi-directional cable television system |
| 09/20/1992 | CA2106599A1 Automatic frequency selection in a bi-directional cable television system |
| 09/17/1992 | WO1992016065A1 Error burst detection |
| 09/16/1992 | EP0503632A2 Delay detector for QPSK signals |
| 09/16/1992 | EP0503588A2 Quadrature amplitude modulator with distortion compensation |
| 09/16/1992 | EP0503512A2 Method and apparatus for communicating amplitude modulated signals over an optical communication path |
| 09/16/1992 | CN1018320B Method and apparatus for quadrature amplitude modulation with line synchronization pulse for video telephone |
| 09/15/1992 | US5148451 Carrier regeneration device correctly operable in mobile satellite communication |
| 09/15/1992 | US5148449 Centering multi-level data |
| 09/15/1992 | US5148448 Adaptive predistortion circuit with memory |
| 09/15/1992 | US5148128 RF digital phase shift modulators |
| 09/15/1992 | US5148127 Biphase shift keying modulation circuit having constant envelope characteristics |
| 09/12/1992 | CA2062018A1 Method and apparatus for communicating amplitude modulated signals over an optical communication path |
| 09/09/1992 | EP0189456B1 Multipurpose digital ic for communication and control network |
| 09/09/1992 | CN1064380A Multi-modulation scheme compatible radio |
| 09/08/1992 | US5146610 Discontinuous transmission muting/unmuting system with link continuity |
| 09/08/1992 | US5146473 Subscriber unit for wireless digital subscriber communication system |
| 09/08/1992 | CA1307342C Voiceband signal classification |
| 09/08/1992 | CA1307341C Voiceband signal classification |
| 09/08/1992 | CA1307323C Modem and data communication system |
| 09/03/1992 | WO1992015165A1 Transmission of well-logging data over bandpass channels using quadrature amplitude modulation |
| 09/02/1992 | EP0501740A2 Phase and gain error control system for use in an I/Q direct conversion receiver |
| 09/02/1992 | EP0501448A2 Gain control circuitry for QAM demodulator |
| 09/02/1992 | CN1064166A Signal conditioner |
| 09/01/1992 | US5144644 Soft trellis decoding |
| 09/01/1992 | US5144626 Data processor |
| 09/01/1992 | US5144258 Power amplifier system for radio transmitter and method for using the same |
| 09/01/1992 | US5144256 Method and apparatus for demodulating a GMSK signal |
| 08/29/1992 | WO1992016063A1 System for broadcasting and receiving digital data, receiver and transmitter for use in such system |
| 08/26/1992 | WO1992015163A1 Method and apparatus for real-time demodulation of a gmsk signal by a non-coherent receiver |
| 08/26/1992 | EP0500025A2 Automatic frequency control method and device for use in receiver |
| 08/26/1992 | EP0499866A1 Circuit for detecting the zero crossing of an alternating analog voltage |
| 08/26/1992 | EP0499763A1 DCE and method for processing data received in a DCE allowing multiple operating configurations |
| 08/25/1992 | US5142690 Cable television radio frequency data processor |
| 08/25/1992 | US5142553 Receiver with direct quadrature sampling of the input signal |
| 08/25/1992 | US5142287 Technique for demodulating and decoding mls dpsk transmissions using a digital signal processor |
| 08/20/1992 | WO1992014326A1 Coherent demodulation process for phase shift modulation and device for carrying out same |
| 08/20/1992 | WO1992014307A1 Method of achieving a closed synchronization loop for two-way communication between a transponder and an interrogator, where different frequencies can be used for the communication between the interrogator and the transponder |
| 08/20/1992 | WO1992014306A1 Apparatus and methods employing distribution preserving tomlinson precoding in transmission of digital data signals |
| 08/19/1992 | EP0499560A1 Channel estimation method for COFDM transmission system |
| 08/18/1992 | US5140615 Maximal ratio diversity combining technique |
| 08/18/1992 | US5140613 Baseband modulation system with improved ROM-based digital filter |
| 08/18/1992 | US5140540 Delay equalization emulation for high speed phase modulated direct digital synthesis |
| 08/18/1992 | CA1306543C Partial response channel signaling systems |
| 08/18/1992 | CA1306516C Demodulator for psk-modulated signals |
| 08/13/1992 | WO1992014316A1 Method for the binary coding of points of a constellation used in a multicarrier modulation of the ofdm type |
| 08/13/1992 | CA2079999A1 Method for the binary coding of points of a constellation used in a multicarrier modulation of the ofdm type |
| 08/12/1992 | EP0498704A1 Method for the coherent demodulation of PSK and apparatus for the implementation of the method |
| 08/12/1992 | EP0498457A2 Digital type VSB modulation apparatus |
| 08/12/1992 | EP0498369A2 Method and apparatus for echo cancellation of a multicarrier signal |
| 08/12/1992 | EP0497801A1 A phase locked loop for producing a reference carrier for a coherent detector. |
| 08/12/1992 | CN1017862B Synthetic digital modulator |
| 08/11/1992 | US5138569 Dual tone multi-frequency detector |
| 08/11/1992 | US5138272 Microwave demodulator for digital radio links using qam type modulation |
| 08/05/1992 | EP0497433A2 Phase controlled demodulation system for digital communication |
| 08/05/1992 | EP0497395A2 Method and apparatus for the transmission and reception of a multicarrier digital television signal |
| 08/05/1992 | EP0497250A1 Method for detecting an interfering signal for a digital data demodulator and apparatus for the implementation of such a method |
| 08/05/1992 | CA2060250A1 Method and apparatus for echo cancellation of a multicarrier signal |
| 08/04/1992 | US5136616 Method of rapidly controlling the frequency of a coherent radio receiver and apparatus for carrying out the method |
| 08/04/1992 | US5136614 Spread spectrum communication system |
| 08/04/1992 | US5136264 Transmitter including an fsk modulator having a switched capacitor |
| 08/04/1992 | CA1306012C Digital signal processing system in a modem |
| 08/04/1992 | CA1306010C Optical transmitter, optical receiver and optical transmission apparatus and control method of optical receiver |
| 08/01/1992 | WO1992014324A1 High speed data detection and clock recovery in a received multi-level data signal |
| 07/30/1992 | DE4102412A1 Modulation mode recognition for baseband signal transformation - subjecting intermediate signal, or couples band signal to parameter estimation |
| 07/29/1992 | EP0496467A2 Receiver for digital transmission system controlled by the measured quality factor of the signal and with improved power consumption |
| 07/29/1992 | EP0496427A2 System for transmitting and receiving aural information and modulated data |
| 07/29/1992 | EP0496408A1 Method for generating transmission message signal and circuit therefor in a vehicle tracking device |
| 07/29/1992 | EP0496298A2 Quadrature optical phase modulators for lightwave systems |
| 07/29/1992 | EP0495921A1 Stabilizing circuit for feedback rf amplifier |
| 07/29/1992 | EP0334868B1 Digital signal coding |
| 07/28/1992 | US5134722 Automatic gain control system |
| 07/28/1992 | US5134648 Reconfigurable modem for a computer or the like |
| 07/28/1992 | US5134634 Multilevel quadrature amplitude demodulator capable of compensating for a quadrature phase deviation of a carrier signal pair |
| 07/28/1992 | US5134633 Digital communications synchronization scheme |
| 07/28/1992 | US5134464 Method and apparatus for the transmission and reception of a multicarrier digital television signal |
| 07/28/1992 | US5134404 Quadrature error correction |