| Patents for H04L 27 - Modulated-carrier systems (89,721) |
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| 04/02/1997 | CN1034458C Cartesian Multicarrier feedback |
| 04/01/1997 | US5617423 Method for negotiating communications parameters |
| 04/01/1997 | US5617063 Matched filters for processing related signal components |
| 04/01/1997 | US5617060 Method and apparatus for automatic gain control and DC offset cancellation in quadrature receiver |
| 03/28/1997 | CA2186634A1 Device for correcting quadrature errors in a multiphase signal quadrature modulator and/or demodulator and transmitter and receiver using said device |
| 03/27/1997 | WO1997011545A1 Method for increasing system capacity while maintaining channel bandwidth in a radio communication system |
| 03/27/1997 | WO1997011539A2 Method for the common transmission of digital and analogue modulated radio broadcasting and/ or television broadcasting signals |
| 03/26/1997 | EP0765060A2 Demodulation of quadrature amplitude modulated signals |
| 03/26/1997 | EP0765059A2 Method for transmitting an orthogonal frequency division multiplex (OFDM) signal and transmitter/receiver therefor |
| 03/26/1997 | EP0765058A1 Data receiving apparatus |
| 03/26/1997 | EP0765057A2 Apparatus and method for timing recovery for vestigial side band modulation system |
| 03/26/1997 | CN1146267A Carrier recovery system for vestigial sideband signal |
| 03/26/1997 | CN1146259A Circuit and method for generating accurate quadrature signals |
| 03/26/1997 | CN1146120A Digital carrier wave restoring device and method therefor in television signal receiver |
| 03/26/1997 | CN1146112A Phase detecting method and phase tracking loop circuit of digital vestigial sideband modulation communication device |
| 03/25/1997 | US5615231 Fast automatic gain control |
| 03/25/1997 | US5615230 Process for transmitting digital signals which combines advantages of OQPSK and π/4-QPSK |
| 03/25/1997 | US5614904 Balance companded delta conversion for homodyne receiver |
| 03/25/1997 | US5614862 Digital demodulator for a frequency modulated signal and an amplitude modulated signal |
| 03/25/1997 | US5614861 N-phase modulated signal demodulation system with carrier reproduction |
| 03/20/1997 | WO1997010664A1 Adaptive multimode equaliser |
| 03/20/1997 | WO1997010647A1 Transmission process in which a conversion oscillator signal is synthesised by means of a fractional n-phase-shift control loop |
| 03/20/1997 | WO1997004525A3 A wireless digital communication device, and a pulse shaping network |
| 03/20/1997 | DE19534462A1 Übertragungsverfahren Transmission method |
| 03/19/1997 | EP0763919A2 QPSK demodulator with frequency and phase tracking |
| 03/19/1997 | EP0763901A2 A trellis demapper of a convolutional decoder |
| 03/19/1997 | EP0763295A1 Method and apparatus for coordinating multi-point-to-point communications in a multi-tone data transmission system |
| 03/19/1997 | EP0763278A2 Quadrature signal conversion device |
| 03/19/1997 | CN1145707A Method and appts. for reducing quantization noise |
| 03/19/1997 | CN1145703A Pipeline cell site base station receiviner for a spread spectrum signals |
| 03/18/1997 | US5613226 Linear transmitter for use in combination with radio communication systems |
| 03/18/1997 | US5613149 Integrated data processing system utilizing successive approximation analog to digital conversion and PWM for parallel disconnect |
| 03/18/1997 | US5612977 Automatic frequency control circuit for a receiver of phase shift keying modulated signals |
| 03/18/1997 | US5612976 Detectors |
| 03/18/1997 | US5612975 Digital receiver for variable data rate communications |
| 03/18/1997 | US5612974 Convolutional encoder for use on an integrated circuit that performs multiple communication tasks |
| 03/18/1997 | US5612973 System employing dissipative pseudorandom dynamics for communications and measurement |
| 03/18/1997 | US5612651 Modulating array QAM transmitter |
| 03/18/1997 | US5612650 Transmitting device for a frequency modulated digital transmission signal |
| 03/18/1997 | US5612617 Frequency detection circuit |
| 03/18/1997 | CA2076935C Demodulating device |
| 03/18/1997 | CA2071551C Apparatus and method of dc offset correction for a receiver |
| 03/18/1997 | CA2061928C Gain control circuitry for quadrature amplitude modulation demodulator |
| 03/13/1997 | WO1997009812A1 Process for transferring digital data via interference-affected radio channels and device for receiving digital data transmitted via interference-affected radio channels |
| 03/13/1997 | WO1997009801A1 Audio file distribution and production system |
| 03/13/1997 | DE19532959A1 Verfahren zum Übertragen von digitalen Daten über störbehaftete Rundfunkkanäle und Vorrichtung zum Empfang von über störbehaftete Rundfunkkanäle übermittelten digitalen Daten A method for transmitting digital data over radio channels subject to interference and apparatus for receiving transmitted via broadcast channels to interference digital data |
| 03/12/1997 | EP0762703A1 Multicarrier demodulation with reduction of white frequency distortion |
| 03/12/1997 | EP0762702A1 Method and apparatus for demodulating a multicarrier signal, taking a channel response estimate and an estimate of white frequency distortion into account |
| 03/12/1997 | EP0762701A2 MCM system, with a plurality of data streams, each with its own transmission parameters |
| 03/12/1997 | EP0762700A2 Method and device for correcting a phase error of a carrier signal |
| 03/12/1997 | EP0762699A2 Method for phase ambiguity resolution in a trellis coded modulation system |
| 03/12/1997 | EP0762698A2 Frequency estimation using iterative filtering, particularly for cellular telephony system |
| 03/12/1997 | EP0762663A2 Spread spectrum communication system |
| 03/12/1997 | EP0762628A1 Digital frequency demodulator |
| 03/12/1997 | EP0761044A1 Data communications device to selectively operate as an analog modem, a digital modem, and a terminal adapter |
| 03/12/1997 | EP0761043A1 High performance modem using pilote symbols for equalization and frame synchronization |
| 03/12/1997 | EP0572376B1 Spectrally efficient digital fm modulation system |
| 03/12/1997 | CN1145151A Data segment driven AFC latch for bi-phase stable frequency phase locked loop |
| 03/12/1997 | CN1145149A Data level selection for multilevel VSB transmission system |
| 03/12/1997 | CN1144992A Spread spectrum communication system for error compensation of carrier frequency |
| 03/11/1997 | US5610949 Phase detector and a method determining the phase of received PSK symbols |
| 03/11/1997 | US5610948 Digital demodulation apparatus |
| 03/11/1997 | US5610947 IR FM modem with flash modulation |
| 03/11/1997 | US5610946 Radio communication apparatus |
| 03/11/1997 | US5610941 IC card radio modem |
| 03/11/1997 | US5610940 Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal |
| 03/11/1997 | US5610908 Digital signal transmission system using frequency division multiplex |
| 03/11/1997 | US5610384 Magnetic coupling circuit-driving system |
| 03/06/1997 | WO1997008877A1 Am compatible digital waveform demodulation using a dual fft |
| 03/06/1997 | WO1997008867A1 Timing recovery and frame synchronization in a cellular communications system |
| 03/06/1997 | WO1997008866A1 Am compatible digital waveform frame timing recovery and frame synchronous power measurement |
| 03/06/1997 | WO1997008861A1 Apparatus and method for digital data transmission |
| 03/06/1997 | WO1997008631A2 Signal processor with reduced complexity, and receiver comprising such a signal processor |
| 03/06/1997 | DE4345253C2 Information encoding and transmission using multistage combination |
| 03/06/1997 | DE19532428A1 Supplementary signal transmission method especially within low frequency transmission channel |
| 03/06/1997 | CA2233063A1 Am compatible digital waveform demodulation using a dual fft |
| 03/05/1997 | EP0760567A2 Digital QAM modulator |
| 03/05/1997 | EP0760182A1 Method of error protected transmission, method of error protected reception of data and transmission system for transmission of data |
| 03/05/1997 | EP0546173B1 Tone receiver comprising a switch capacitor zero crossing detector |
| 03/05/1997 | EP0429674B1 Modem capable of detecting out-of-frame synchronism condition |
| 03/05/1997 | CN1144589A Phase detector in carrier recovery network for vestigial sideband signal |
| 03/05/1997 | CN1144580A Blind equalizer for vestigial sideband signal |
| 03/05/1997 | CN1144579A Carrier independent timing recovery system for vestigial sideband modulated signal |
| 03/04/1997 | US5608796 Balanced phase splitting circuit |
| 03/04/1997 | US5608764 OFDM synchronization demodulation circuit |
| 03/04/1997 | US5608763 Method and apparatus for decoding a radio frequency signal containing a sequence of phase values |
| 03/04/1997 | US5608761 Method, device, and radio for compensating for modulator frequency drift while allowing for data transmission |
| 03/04/1997 | US5608760 Method and circuits for the transmission and reception of numeric signals, in which the peak power of the filtered signal transmitted is reduced, compatible with conventional coding techniques |
| 03/04/1997 | US5608755 Method and apparatus for implementing carrierless amplitude/phase encoding in a network |
| 03/04/1997 | US5608725 Method and apparatus of a communications system having a DMT infrastructure |
| 03/04/1997 | CA1338960C Transmitting power adjustment in a duplex data transmission system |
| 02/27/1997 | WO1997007620A1 Transmission system with improved symbol processing |
| 02/27/1997 | WO1997007619A1 Digital transmission system |
| 02/27/1997 | WO1997007618A1 Receiver with filter offset correction |
| 02/27/1997 | WO1997007612A1 Synchronisation method |
| 02/27/1997 | WO1997007606A1 Dynamic allocation of bandwidth for transmission of audio signals and a video signal |
| 02/27/1997 | CA2202752A1 Transmission system with improved symbol processing |
| 02/26/1997 | EP0759665A1 Method for interleaving data frames, forward error correcting device and modulator including such a device |
| 02/26/1997 | EP0759236A1 Band power echo reducer for multifrequency signal detectors |
| 02/26/1997 | CN1143874A Transmitter and two-way radio set |