| Patents for H04L 27 - Modulated-carrier systems (89,721) |
|---|
| 10/11/1994 | CA1332455C Data transmission with improved message format |
| 10/11/1994 | CA1332450C Carrier-to-noise detector for digital transmission systems |
| 10/06/1994 | DE4334425A1 Quadraturphasenumtastmodulation mit Phasendifferenzcodierung Quadraturphasenumtastmodulation with phase difference coding |
| 10/06/1994 | CA2120552A1 /4 shift qpsk modulator |
| 10/05/1994 | EP0618707A2 Phase ambiguity removing device |
| 10/05/1994 | EP0618697A2 Method for the correction of phase and amplitude errors in COFDM signals |
| 10/04/1994 | US5353344 Method of determining levels at given frequencies of a VF signal |
| 10/04/1994 | US5353338 Multi-mode modem for automatically switching between data transmit and control command modes |
| 10/04/1994 | US5353302 Signal despreader for CDMA systems |
| 10/04/1994 | CA2027387C Technique for determining signal dispersion characteristics in communications systems |
| 09/29/1994 | WO1994016505A3 Psk demodulator |
| 09/29/1994 | DE4309682A1 Arrangement for frequency shift control in the transmitter of an FSK system |
| 09/28/1994 | EP0617532A1 Calibration method for vector modulators |
| 09/28/1994 | EP0617531A1 Multiresolution transmission system |
| 09/28/1994 | EP0617521A2 Iterative equalisation of digital signals degraded by multipath fading |
| 09/28/1994 | EP0617196A2 Digital mud pulse telemetry system |
| 09/28/1994 | EP0616745A1 Timing and automatic frequency control of digital receiver using the cyclic properties of a non-linear operation |
| 09/27/1994 | US5351274 Post detection selection combining diversity receivers for mobile and indoor radio channels |
| 09/27/1994 | US5351272 Communications apparatus and method for transmitting and receiving multiple modulated signals over electrical lines |
| 09/27/1994 | US5351249 Trellis coded FM digital communications system and method |
| 09/27/1994 | US5351016 Adaptively self-correcting modulation system and method |
| 09/26/1994 | CA2382460A1 Communication system |
| 09/22/1994 | DE4409175A1 Method for transmitting digital signals by means of frequency modulation |
| 09/21/1994 | EP0616470A2 Transmission system and apparatus for receiving digital television signals |
| 09/21/1994 | EP0616454A1 Multi-resolution digital transmission system |
| 09/21/1994 | EP0616453A1 Receiver for differentially encoded PSK signals |
| 09/21/1994 | EP0616445A1 Duplex multicarrier digital radio communication system, mobile station and base station for it |
| 09/21/1994 | EP0527966B1 A multilevel coherent optical system |
| 09/21/1994 | EP0382826B1 High speed multi-channel phase detector |
| 09/21/1994 | EP0344213B1 Viterbi decoder with reduced number of data move operations |
| 09/21/1994 | CN1092576A Carrier phse lock detecting apparatus used in psk-modulated signal receiver for satellite communication system |
| 09/15/1994 | WO1994021073A1 Digital demodulator |
| 09/15/1994 | WO1994021072A1 Method for increasing communication range in a two-way communication system |
| 09/15/1994 | WO1994021071A1 Method and apparatus for receiving electromagnetic radiation within a frequency band |
| 09/15/1994 | WO1994020941A1 Multi-mode identification system |
| 09/15/1994 | WO1994020888A3 Radio frequency telecommunications transceiver |
| 09/15/1994 | WO1994020888A2 Radio frequency telecommunications transceiver |
| 09/15/1994 | DE4313490C1 Costas loop for demodulation of phase shift keying |
| 09/15/1994 | CA2135490A1 Digital demodulation circuit |
| 09/14/1994 | EP0614587A1 Demodulation method using quadrature modulation |
| 09/14/1994 | EP0614582A1 Digital demodulator for preamble-less burst communications |
| 09/14/1994 | CN1092231A Demodulator for consumer uses |
| 09/13/1994 | US5347569 Gain control circuitry for QAM demodulator |
| 09/13/1994 | US5347542 Demodulation selection for a communication signal |
| 09/13/1994 | US5347228 BPSK demodulator using compound phase-locked loop |
| 09/13/1994 | CA2092608A1 Moam trellis coded modulation technique using industry standard viterbi decoder rate 1/2 and additional simple logic |
| 09/07/1994 | EP0614300A1 QAM receiver having means for correcting the receiver quadrature error |
| 09/07/1994 | EP0614299A1 QAM receiver having means for correcting the transmitter quadrature error |
| 09/07/1994 | EP0614184A2 Digital recording and reproducing |
| 09/07/1994 | EP0613595A1 Digital demodulator |
| 09/07/1994 | CN1091879A Pilot carrier dot product circuit |
| 09/06/1994 | US5345601 Harmonic-frequency communication system with improved diversity scheme |
| 09/06/1994 | US5345473 Apparatus for providing two-way communication in underground facilities |
| 09/06/1994 | US5345440 Reception of orthogonal frequency division multiplexed signals |
| 09/06/1994 | US5345439 Multi purpose digital signal regenerative processing apparatus |
| 09/06/1994 | US5345437 System for controlling frequency multiplexing modems |
| 09/06/1994 | US5345187 Dual frequency demodulation apparatus for frequency shift keyed (FSK) data signals and FM signals and method therefor |
| 09/06/1994 | CA2029749C Modem signal detecting system for adaptive differential pcm codec |
| 09/04/1994 | WO1997032422A1 Production of a frequency control signal in an fsk receiver |
| 09/01/1994 | WO1994019892A1 Multiple-modulation communication system |
| 08/31/1994 | EP0613268A2 Clock recovery circuit in pi/4 shift quadriphase PSK demodulator |
| 08/31/1994 | EP0613267A2 OFDM system with cross-talk reduction |
| 08/31/1994 | EP0613266A2 OFDM receiver with compensation for differential delays |
| 08/31/1994 | EP0613021A1 Process, apparatus and transmitter for radiolocation utilising a multicarrier radio distribution system |
| 08/30/1994 | US5343502 Symbol timing detecting circuit |
| 08/30/1994 | US5343500 Non-linear encoder and decoder for information transmission through non-linear channels |
| 08/30/1994 | US5343499 Quadrature amplitude modulation synchronization method |
| 08/25/1994 | DE4405752C1 Method and circuit arrangement for digital frame synchronisation |
| 08/24/1994 | EP0611505A1 Coding method for fdm broadcast transmissions, transmitter and receiver for carrying out the method |
| 08/23/1994 | US5341402 Automatic frequency control method and device for use in receiver |
| 08/23/1994 | US5341107 FM quadrature demodulator with two phase comparison circuits |
| 08/23/1994 | US5341105 Quadratore demodulator circuit utilizing automatic frequency control signal and method thereof |
| 08/18/1994 | WO1994018775A1 Efficient amplitude/phase modulation amplifier |
| 08/18/1994 | WO1994018772A1 Error tracking loop |
| 08/17/1994 | EP0611057A2 Correction of D.C. offset in received and demodulated radio signals |
| 08/17/1994 | EP0610988A1 Multi-user spread spectrum communication system |
| 08/17/1994 | EP0610683A2 Digital timing recovery circuit |
| 08/17/1994 | EP0610648A2 Multilevel code communication equipment |
| 08/17/1994 | EP0610438A1 Radio frequency broadcasting systems and methods using two low-cost geosynchronous satellites |
| 08/16/1994 | US5339333 FSK demodulator using signal transitions |
| 08/16/1994 | US5339185 Optical timing extraction circuit |
| 08/16/1994 | US5339054 Modulated signal transmission system compensated for nonlinear and linear distortion |
| 08/10/1994 | EP0610023A2 A signal despreader for CDMA systems |
| 08/10/1994 | EP0609717A2 Carrier detector |
| 08/09/1994 | US5337332 Training detection apparatus |
| 08/09/1994 | US5337331 Method of coherent demodulation for phase shift keying and a device for implementing the method |
| 08/09/1994 | CA2115118A1 Method of transmitting a data stream, transmitter and receiver |
| 08/04/1994 | WO1994017599A1 Cartesian multicarrier feedback |
| 08/04/1994 | WO1994017596A1 Method and system for performing transmission of digital data by coding bit information into the shape of a pulse and decoding the bit information from the shape of the pulse |
| 08/04/1994 | WO1994012571A3 Mixtures of unsaturated carboxylic acid polymerizates and use |
| 08/04/1994 | DE4302543A1 Phase modulator for mobile communication systems |
| 08/04/1994 | CA2132089A1 Cartesian multicarrier feedback |
| 08/03/1994 | EP0608717A2 Phase error canceller for QPSK signals using unique word detectors |
| 08/03/1994 | EP0608697A1 Modulation method and circuit for high frequency signals |
| 08/03/1994 | EP0608577A1 GMSK modulator with automatic calibration |
| 08/03/1994 | EP0477175B1 Direct conversion receiver for digital signals and method for demodulation of said signals |
| 08/03/1994 | CN2173482Y Zero energy cross point modulator |
| 08/03/1994 | CN1090302A Mixtures of polymers of monoethylenically unsaturated dicarboxylic acids and polymers of ethylenically unsaturated monocarboxylic acids and/or polyaminocarboxylic acids and their use |
| 08/02/1994 | US5335251 Diversity receiver |
| 08/02/1994 | US5335250 Method and apparatus for bidirectional demodulation of digitally modulated signals |