| Patents for H04L 27 - Modulated-carrier systems (89,721) |
|---|
| 01/17/1995 | US5382924 Continuous phase frequency shift keying modulator |
| 01/17/1995 | CA2124376A1 Method and apparatus for encoding data for transfer over a communication channel |
| 01/17/1995 | CA2034215C Method of controlling transmission of facsimile |
| 01/11/1995 | EP0633681A1 A modulation scheme with low envelope variation for mobile radio |
| 01/11/1995 | EP0633680A1 A trellis coded modulation scheme with low envelope variation for mobile radio |
| 01/11/1995 | EP0633679A1 Intersymbol interference channel coding scheme |
| 01/11/1995 | EP0633655A1 Variable if transmitter arrangement |
| 01/11/1995 | EP0632947A1 Method and apparatus of adaptive maximum likelihood sequence estimation using filtered correlation synchronization |
| 01/10/1995 | US5381450 Technique for automatically detecting the constellation size of a quadrature amplitude modulated (QAM) signal |
| 01/10/1995 | US5381449 Peak to average power ratio reduction methodology for QAM communications systems |
| 01/10/1995 | US5381177 CCD delay line capable of automatic adjustment of an input bias voltage to charge transfer regions |
| 01/10/1995 | US5381108 Automatic calibration of the quadrature balance within a cartesian amplifier |
| 01/10/1995 | CA2038585C Signal detecting circuit for detecting a signal specified in a designated frequency |
| 01/05/1995 | WO1995001035A1 Digital radio communication equipment |
| 01/05/1995 | WO1995001034A1 Digital signal demodulation method and device |
| 01/05/1995 | WO1995001033A1 Quadrature minimum-shift keying |
| 01/05/1995 | CA2165456A1 Digital signal demodulation method and device |
| 01/04/1995 | EP0632629A1 Modem with firmware upgrade feature |
| 01/04/1995 | EP0632624A1 Data transmission system using predistortion |
| 01/04/1995 | EP0632612A1 Error detection method using convolutional code and viterbi decoding |
| 01/04/1995 | EP0632610A1 Apparatus for detecting unique words in a BPSK-TDMA system |
| 01/04/1995 | EP0632606A1 Method and apparatus for establishing an maintaining frame synchronization in a satellite communication system |
| 01/04/1995 | EP0632604A1 Method and apparatus for baseband signal combining and clock timing recovery using a constant modulus algorithm |
| 01/04/1995 | EP0632575A1 Quadrature modulator |
| 01/03/1995 | US5379346 Cascading synchronized chaotic systems |
| 01/03/1995 | US5379324 System and method for calculating channel gain and noise variance of a communication channel |
| 01/03/1995 | US5379323 DQPSK delay detection circuit |
| 01/03/1995 | US5379322 Baseband signal generator for digital modulator |
| 01/03/1995 | US5379242 ROM filter |
| 01/03/1995 | US5379037 Apparatus for decoding degraded data signals |
| 01/03/1995 | CA2037090C Modem comprising saw filters having opposite passband delay characteristics |
| 01/03/1995 | CA2030038C Coded modulation for mobile radio |
| 01/03/1995 | CA2022153C Modulator and demodulator for data transmission systems |
| 12/30/1994 | CA2126918A1 Device for detecting bpsk modulated unique words adapted to an analogue modem operating in tdma mode and detection process used in said device |
| 12/28/1994 | EP0631421A1 Simultaneous analog and digital communication applications |
| 12/28/1994 | EP0631420A1 Simultaneous analog and digital communication |
| 12/28/1994 | EP0631406A1 Method and apparatus for digital data transmission in a VSB system |
| 12/28/1994 | EP0631398A2 Method and apparatus for waveform shaping of packet data |
| 12/28/1994 | EP0630538A1 Binary phase shift keying modulation system or frequency multiplier |
| 12/28/1994 | CN1096913A Efficient amplitude/phase modulaton amplifier |
| 12/28/1994 | CN1027213C System and method for calculating channel gain and noise variance of a communication channel |
| 12/28/1994 | CN1027211C Direct phase digitization |
| 12/27/1994 | US5377232 Frequency synchronized bidirectional radio system |
| 12/27/1994 | US5377229 Multi-modulation scheme compatible radio |
| 12/27/1994 | US5377194 Multiplexed coded modulation with unequal error protection |
| 12/27/1994 | US5376894 In a digital communications system |
| 12/22/1994 | WO1994029991A1 Phase detector |
| 12/22/1994 | WO1994029990A1 Delay detecting method of maximum likelihood estimation and delay detector using it |
| 12/22/1994 | WO1994029984A1 Process and arrangement for adjusting the local oscillators of a receiver in a multi-channel transmission system |
| 12/22/1994 | WO1994029977A1 Digital broadcast system |
| 12/22/1994 | WO1994029971A1 Signaling packet for communication system with modulated reference according to a time-base law |
| 12/22/1994 | CA2164433A1 Signaling for communication system whith modulated reference according to a time-base low |
| 12/21/1994 | EP0630141A2 Computer-based multifunction personal communications system |
| 12/21/1994 | EP0630137A1 System for the reception of a phase and amplitude modulated digital signal |
| 12/21/1994 | EP0630136A2 Simultaneous analog and digital communication with improved phase immunity |
| 12/21/1994 | EP0630135A2 Simultaneous analog and digital communication using fractional rate encoding |
| 12/21/1994 | EP0630134A2 Simultaneous analog and digital communication with an enhanced data rate during near silence |
| 12/21/1994 | EP0630133A2 Modem applications of simultaneous analog and digital communication |
| 12/21/1994 | EP0630132A2 Shaped signal spaces in a simultaneous voice and data system |
| 12/21/1994 | EP0630131A1 Companding of voice signal for simultaneous voice and data transmission |
| 12/21/1994 | EP0630130A2 Controlled simultaneous analog and digital communication |
| 12/21/1994 | EP0630117A2 Trellis coding in a simultaneous voice and data system |
| 12/21/1994 | EP0629325A1 Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a cdma cellular communications system |
| 12/21/1994 | EP0629323A1 Method and receiver for terrestrial digital radio transmission |
| 12/21/1994 | CN1096620A Phase error canceller for QPSK signals using unique word detectors |
| 12/20/1994 | US5375143 Method for channel adaptive detecting/equalizing |
| 12/20/1994 | US5375140 Wireless direct sequence spread spectrum digital cellular telephone system |
| 12/20/1994 | US5374863 Surface acoustic wave device, and demodulation device and communication system using the same |
| 12/18/1994 | CA2126044A1 Phase and amplitude modulation digital signal receiver system |
| 12/15/1994 | DE4319217A1 Method for transmitting and/or receiving high volumes of digital data in parallel and transmitters and receivers suitable for carrying out the method |
| 12/15/1994 | DE4319216A1 Method for transmitting and/or receiving large volumes of digital data |
| 12/15/1994 | CA2125520A1 Trellis coding in a simultaneous voice and data system |
| 12/15/1994 | CA2125510A1 Shaped signal spaces in a simultaneous voice and data system |
| 12/15/1994 | CA2125509A1 Companding of voice signal for simultaneous voice and data transmission |
| 12/15/1994 | CA2125053A1 Simultaneous analog and digital communication |
| 12/15/1994 | CA2124730A1 Simultaneous analog and digital communication applications |
| 12/15/1994 | CA2124377A1 Simultaneous analog and digital communication |
| 12/15/1994 | CA2121936A1 Simultaneous analog and digital communication using fractional rate encoding |
| 12/15/1994 | CA2121934A1 Simultaneous analog and digital communication with improved phase immunity |
| 12/14/1994 | EP0629069A2 QAM constellation design |
| 12/14/1994 | EP0629041A1 Automatic frequency control apparatus and method therefor |
| 12/14/1994 | EP0628229A1 Psk demodulator |
| 12/14/1994 | EP0423119B1 Process and device for transmitting numerical data |
| 12/13/1994 | US5373533 FSK signal receiving device |
| 12/13/1994 | US5373532 π/4 quadrature phase shift keying modulator |
| 12/13/1994 | US5373265 Modulator having oscillator for generating IF and RF signals by division and up-conversion |
| 12/13/1994 | US5373247 Automatic frequency control method and circuit for correcting an error between a received carrier frequency and a local frequency |
| 12/13/1994 | US5373246 Digital FFSK demodulator |
| 12/13/1994 | CA2041251C Carrier extraction method and device for multi-state modulation |
| 12/13/1994 | CA2027766C Multi-frequency signal receiver and a method of detecting the multi-frequency signal |
| 12/08/1994 | WO1994028662A1 A method for demodulating a digitally modulated signal and a demodulator |
| 12/08/1994 | WO1994028657A1 Digital receiver for variable data rate communications |
| 12/08/1994 | WO1994028656A1 Transmitting and receiving apparatus and method including punctured convolutional encoding and decoding |
| 12/08/1994 | WO1994028640A1 Rake receiver combining all the useful multipath components of a spread spectrum signal |
| 12/08/1994 | WO1994028637A1 A method and apparatus for determining signal usability |
| 12/08/1994 | WO1994028623A1 A method and apparatus for mitigating distortion effects in the determination of signal usability |
| 12/08/1994 | WO1994028622A1 A data decoder and method for use therein using a dynamically indexed channel state metric |
| 12/08/1994 | WO1994027787A1 Grinding tape and method of manufacturing the same |
| 12/08/1994 | DE4419428A1 Circuit arrangement for a demodulator of a radio data signal in a broadcast receiver |
| 12/08/1994 | CA2161626A1 Digital receiver for variable data rate communications |