| Patents for H04L 27 - Modulated-carrier systems (89,721) |
|---|
| 10/14/1997 | US5678183 Mobile transmitter which does not cause a disruption of communication when moving between communication systems with different modulation schemes |
| 10/14/1997 | US5678173 CATV system and method of judging modulation technique in CATV system |
| 10/14/1997 | US5677934 Multipath propagation compensation in a TDMA system |
| 10/14/1997 | US5677932 Baseband estimator for estimating the amplitude/frequency characteristic of a multiphase signal |
| 10/14/1997 | US5677927 Impulse radio transmitter |
| 10/14/1997 | US5677911 Data frame format for a digital signal having multiple data constellations |
| 10/14/1997 | CA2076857C Circuit for an output resonant cavity in a frequency-shift transmitter output stage |
| 10/09/1997 | WO1997037470A1 Slice predictor for a signal receiver |
| 10/09/1997 | WO1997037468A1 Channel estimation arrangement |
| 10/09/1997 | WO1997037458A2 Communication server apparatus and method |
| 10/09/1997 | CA2250487A1 Communication server apparatus and method |
| 10/08/1997 | EP0800297A1 Multiplex transmission and reception system |
| 10/08/1997 | EP0800289A2 A transmission system for digital audio broadcasting |
| 10/08/1997 | EP0800287A2 A transmission system for digital audio broadcasting |
| 10/08/1997 | EP0800267A2 Apparatus for envelope shaping of burst signals in a transmitter |
| 10/08/1997 | EP0799530A2 Dual-mode fm/cdma communication system |
| 10/08/1997 | EP0654191A4 Apparatus and methods employing distribution preserving tomlinson precoding in transmission of digital data signals. |
| 10/08/1997 | CN1161605A Communication apparatus |
| 10/07/1997 | US5675609 Sinusoidal pulse and pulse train signaling apparatus |
| 10/07/1997 | US5675590 Cyclic trellis coded modulation |
| 10/07/1997 | US5675572 Orthogonal frequency division multiplex modulation apparatus and orthogonal frequency division multiplex demodulation apparatus |
| 10/07/1997 | US5675498 Measuring amplitude of sparsely sampled sinusoidal signal |
| 10/07/1997 | US5675284 Frequency lock indicator for FPLL demodulated signal having a pilot |
| 10/04/1997 | CA2201408A1 Transmission apparatus |
| 10/02/1997 | WO1997036409A1 Digital receiver with tunable analog parameters and method therefor |
| 10/02/1997 | WO1997036384A1 Point-multipoint radio transmission system |
| 10/01/1997 | EP0798939A2 Test signal generator for a vestigial transmission system and method |
| 10/01/1997 | EP0798903A2 Synchronisation of the local oscillator and of the sampling clock in a multicarrier receiver |
| 10/01/1997 | EP0798902A1 Robust phase estimator and regenerator for digital signals affected by phase jitter |
| 10/01/1997 | EP0798849A1 Circuit and method for correcting phase error in a multiplier circuit and quadrature generating circuit |
| 10/01/1997 | EP0797884A1 Method of balancing the channels of a linc amplifier |
| 10/01/1997 | EP0797878A1 Ofdm with variable subcarrier allocation |
| 10/01/1997 | EP0701752A4 A method and apparatus for determining signal usability |
| 10/01/1997 | EP0692157A4 A demodulator for frequency shift keyed signals |
| 10/01/1997 | CN1161121A Transmission system with improved symbol processing |
| 10/01/1997 | CN1161116A Automatic tuning of a radio transceiver |
| 10/01/1997 | CN1161115A A digital radio system, A digital radio device, and quadrature demodulator |
| 10/01/1997 | CN1160957A Multiple-band synchronous communication |
| 10/01/1997 | CN1160955A Synchronization device for digital communications |
| 10/01/1997 | CN1036041C 直接变换接收机 Direct conversion receiver |
| 09/30/1997 | US5673293 Method and apparatus for demodulating QAM and VSB signals |
| 09/30/1997 | US5673292 AM-PSK system for broadcasting a composite analog and digital signal using adaptive M-ary PSK modulation |
| 09/30/1997 | US5673291 Simultaneous demodulation and decoding of a digitally modulated radio signal using known symbols |
| 09/30/1997 | US5673290 ADSL compatible discrete multi-tone apparatus |
| 09/30/1997 | US5673287 Dual mode amplifier network having an isolator in a digital path and a filter in an analog path |
| 09/30/1997 | US5673268 Method of maintaining a modem connection over a telephone line |
| 09/30/1997 | US5673257 Computer-based multifunction personal communication system |
| 09/30/1997 | US5673051 Discrete phase modulator |
| 09/30/1997 | CA2090367C Data demodulator |
| 09/29/1997 | CA2201387A1 Heavy-duty phase estimator and recuperator for digital signals affected by phase jitter |
| 09/25/1997 | WO1997035412A1 Method and apparatus for routing a digitized rf signal to a plurality of paths |
| 09/25/1997 | WO1997035411A1 Balanced transversal i,q filters for quadrature modulators |
| 09/24/1997 | EP0797334A2 Data transmission using FSK and ASK simultaneously |
| 09/24/1997 | EP0797333A1 Equalisation method and device for a multi-carrier signal and corresponding receiver |
| 09/24/1997 | EP0797306A2 Reception apparatus for A/D conversion of a received signal |
| 09/24/1997 | EP0797294A1 Method for correcting non-linear distortion of an amplifier and radio transmitter using such method |
| 09/24/1997 | EP0797293A1 Method for correcting non-linear distortion of an amplifier and radio transmitter using such method |
| 09/24/1997 | EP0796532A1 Ocdma code tracking system having phantom carrier signal |
| 09/24/1997 | EP0796529A2 Orthogonal code division multiple access communication system having multicarrier modulation |
| 09/24/1997 | EP0575422B1 Error burst detection |
| 09/24/1997 | CN1160464A Method and apparatus for aligning digital receiver |
| 09/24/1997 | CN1160461A Digital QAM and VSB modulator and demodulator |
| 09/23/1997 | US5671254 Modulation, demodulation and antenna coupling circuits used in IC card reading/writing apparatus, and method of supplying power to the IC card |
| 09/23/1997 | US5671253 Apparatus for demodulating and decoding video signals encoded in different formats |
| 09/23/1997 | US5671251 Apparatus and method for a data communications device to selectively operate as an analog modem, as a digital modem, and as a terminal adapter |
| 09/22/1997 | CA2200660A1 Method of correcting nonlinearities of an amplifier, and radio transmitter employing a method of this type |
| 09/21/1997 | CA2200531A1 Pre-compensated frequency modulation (pfm) |
| 09/18/1997 | WO1997034421A1 Data transmission using atm over hybrid fiber coax |
| 09/18/1997 | WO1997034398A1 Methods and apparatus for detecting the presence of a prescribed signal in a communication channel |
| 09/18/1997 | WO1997034383A1 Subcarrier injection system and method using adaptive level-shifted minimum shift keying |
| 09/18/1997 | WO1997034382A1 Process and system for the ofdm multi-carrier transmission of digital radio signals |
| 09/18/1997 | WO1997022185A3 Re-orthogonalization of wideband cdma signals |
| 09/18/1997 | DE19609909A1 Verfahren und System zur OFDM-Mehrträger-Übertragung von digitalen Rundfunksignalen Method and system for OFDM multicarrier transmission of digital broadcast signals |
| 09/17/1997 | EP0795986A2 Multitone detector using an adaptive IIR filter |
| 09/17/1997 | EP0795985A2 Compensation of phase errors in multicarrier signals |
| 09/17/1997 | EP0795984A2 Flexible asymmetrical digital subscriber line (ADSL) receiver, central office using same, and method therefor |
| 09/17/1997 | EP0795983A1 OQPSK modulator |
| 09/17/1997 | EP0795982A2 Structure of a quadrature modulated signal |
| 09/17/1997 | EP0795981A2 FSK modulator |
| 09/17/1997 | EP0795978A2 Frequency control for frequency division channels |
| 09/17/1997 | EP0795977A2 Method of transmitting an ADSL signal simultaneously with an ISDN signal |
| 09/17/1997 | EP0795959A1 Asymmetric filter combination for a digital transmission system |
| 09/17/1997 | EP0795239A1 Method for synchronization of transmitter and receiver at mobile radio system |
| 09/17/1997 | EP0795232A1 Universal radio architecture for low-tier personal communication system |
| 09/17/1997 | EP0795161A2 Signal processor with reduced complexity, and receiver comprising such a signal processor |
| 09/17/1997 | CN1159692A Transmission device with echo eliminating function |
| 09/17/1997 | CN1159685A Signal transmission method and equipment |
| 09/16/1997 | US5668923 Voice messaging system and method making efficient use of orthogonal modulation components |
| 09/16/1997 | US5668857 Communication server apparatus and method |
| 09/16/1997 | US5668842 High-speed digital-to-RF-converter |
| 09/16/1997 | US5668838 Instantaneous phase detecting circuit and clock recovery signal generating circuit incorporated in differential demodulator |
| 09/16/1997 | US5668836 Split frequency band signal digitizer and method |
| 09/16/1997 | US5668831 For the reception of data packets |
| 09/16/1997 | US5668810 Data transmission protocol method and apparatus |
| 09/16/1997 | US5668802 Communications system |
| 09/16/1997 | US5668749 Circuit for performing arithmetic operations in a demodulator |
| 09/16/1997 | US5668498 Method of demodulating a digital signal |
| 09/12/1997 | WO1997033414A2 Pulse shaping for gmsk |
| 09/12/1997 | WO1997033393A1 Communication system and operating method thereof |
| 09/12/1997 | WO1997033374A1 Process and device for generating a plurality of derived clock signals |