Patents for H04L 27 - Modulated-carrier systems (89,721)
07/1998
07/02/1998CA2274715A1 Method and apparatus for variably allocating upstream and downstream communication spectra
07/02/1998CA2274522A1 Adaptive predistortion system
07/01/1998EP0851692A2 Dual-tone multi-frequency signal transfer protocol
07/01/1998EP0851642A2 Multicarrier receiver with compensation for frequency offset and for frequency-dependent distortion
07/01/1998EP0851641A2 Communication method and receiving apparatus for OFDM systems
07/01/1998EP0851640A2 Correction of DC and phase offsets in PSK receivers
07/01/1998EP0851639A2 QPSK modulated backscatter system
07/01/1998EP0851638A2 Communication method and receiving apparatus for OFDM system
07/01/1998EP0851622A1 Coded modulation for constellations with fewer symbols than are required by the coding scheme
07/01/1998EP0851602A2 Differential phase shift keying spread spectrum packet signal detection
07/01/1998EP0851579A2 A digital filter
07/01/1998EP0851573A1 Device for estimating the frequency offset between a frequency carrier of a digital signal and the frequency of a local oscillator of a receiver, and corresponding receiver
07/01/1998EP0850527A1 Adaptive multimode equaliser
07/01/1998EP0850511A1 Transmission process in which a conversion oscillator signal is synthesised by means of a fractional n-phase-shift control loop
07/01/1998CN1186583A Method and circuit arrangement for improving carrier separation for trasmission of OFDM signals
07/01/1998CN1186389A SIR measurement apparatus
06/1998
06/30/1998US5774512 Higher order digital phase loop filter
06/30/1998US5774508 Data synchronizer phase detector and method of operation thereof
06/30/1998US5774506 Data receiving apparatus
06/30/1998US5774503 Demodulation method and demodulation device
06/30/1998US5774502 Fully integrated data receiver and method for receiving on/off keyed AM/PDSK modulated signals
06/30/1998US5774500 Multi-channel trellis shaper
06/30/1998US5774492 Low-complexity direct conversion receiver for delay-and-correlate transmitted reference signaling
06/30/1998US5774450 Method of transmitting orthogonal frequency division multiplexing signal and receiver thereof
06/30/1998US5774375 Method and apparatus for the correction of signal-pairs
06/30/1998CA2219266A1 Qpsk modulated backscatter system
06/30/1998CA2109412C Method and apparatus for estimating signal weighting parameters in a receiver
06/25/1998WO1998027701A1 Spectrally efficient modulation using overlapped gmsk
06/25/1998WO1998027700A1 Rate 2/3 mask trellis coded modulation using rate 1/2 convolutional encoder
06/25/1998WO1998027699A1 Multilevel coding
06/25/1998WO1998027682A1 Receiver decoder circuitry, and associated method, for decoding a channel encoded signal
06/25/1998CA2275579A1 Spectrally efficient modulation using overlapped gmsk
06/25/1998CA2275185A1 Multilevel coding
06/24/1998EP0849919A2 Shaping functions for multicarrier modulation systems
06/24/1998EP0848877A1 Process for transferring digital data via interference-affected radio channels and device for receiving digital data transmitted via interference-affected radio channels
06/24/1998EP0848870A1 Equalizer with extended channel estimation for a receiver in a digital transmission system
06/24/1998CN1185709A Communication method, base station and terminal equipment
06/24/1998CN1185691A Code multi-way multiplex transmission device
06/23/1998USRE35829 Binary phase shift keying modulation system and/or frequency multiplier
06/23/1998US5771442 Dual mode transmitter
06/23/1998US5771263 Communication system control method and communication system using the method
06/23/1998US5771224 Orthogonal frequency division multiplexing transmission system and transmitter and receiver therefor
06/23/1998US5771223 Method of receiving orthogonal frequency division multiplexing signal and receiver thereof
06/23/1998US5769876 Method and apparatus for telemetering data bidirectionally between two devices, one device incorporating a coarse phase adjustment and the other device incorporating a fine phase adjustment
06/23/1998CA2099394C Dqpsk delay detection circuit
06/23/1998CA2074974C Demodulator for digitally modulated wave
06/18/1998WO1998026546A1 Method for digital transmission or radio broadcast
06/18/1998WO1998026545A2 A method and apparatus for improved phase shift keyed (psk) signal demodulation
06/18/1998WO1998019465A3 Method of combining several signals, and base station
06/18/1998WO1998010550A3 Improvements in, or relating to, multi-carrier transmission systems
06/18/1998WO1998009385A3 Spatio-temporal processing for communication
06/18/1998DE19754203A1 Frequenzerzeugungsschaltung und Betriebsweise Frequency generation circuit and operation
06/17/1998EP0848524A1 Punctured, trellis coded QAM, with interative decoding
06/17/1998EP0848523A2 PSK Demodulator using the CORDIC algorithm
06/17/1998EP0848522A2 A generalized multimodulus technique for blind equalization
06/17/1998EP0848501A1 Digital transmission system and method comprising a product code combined with multidimensional modulation
06/17/1998EP0847643A1 Method for simplifying the demodulation in multiple carrier transmission system
06/17/1998EP0847642A1 Am compatible digital waveform demodulation using a dual fft
06/17/1998EP0847638A1 Audio file distribution and production system
06/17/1998EP0847619A1 Circuit arrangement comprising a cartesian amplifier
06/17/1998EP0516741B1 Hybrid analog/digital signal processing
06/17/1998CN1185062A Multivalued FSK demodulation window comparator
06/16/1998US5768326 For use in a digital broadcasting receiver
06/16/1998US5768323 In a telecommunications device
06/16/1998US5768321 Automatic frequency control unit which detects a frame pattern in a phase modulation signal
06/16/1998US5768319 GPS data collection in high noise-to-signal ratio environments
06/16/1998US5768318 Signal processor
06/16/1998US5768317 Equalization filter compensating for distortion in a surface acoustic wave device
06/16/1998US5768310 Data transmission circuit for an electricity mains network having a low reception threshold
06/16/1998US5768291 Method and apparatus for error mitigating a received communication signal
06/16/1998US5768269 Apparatus and method for establishing frame synchronization in distributed digital data communication systems
06/16/1998US5768262 Methods for performing intelligent network services with an ISDN network terminator located at a subscriber's premise
06/16/1998US5767750 Modulator
06/16/1998US5767738 Apparatus and method for demodulating a modulated signal
06/16/1998CA2113330C Multicarrier modulation transmission system with variable delay
06/12/1998CA2219392A1 A generalized multimodulus technique for blind equalization
06/11/1998WO1998025354A1 Method for correcting errors from a jamming signal in a frequency hopped spread spectrum communication system
06/11/1998WO1998025338A1 Method and apparatus for demodulating a frequency shift keyed signal
06/10/1998EP0847170A1 Frequency shift key modulating oscillator
06/10/1998EP0847169A2 Communication signal processors and methods compatible with a variety of modulation types
06/10/1998EP0847144A2 Receiver with low stand by current
06/10/1998EP0847143A1 Programmable frequency synthesizer having low phase noise sensitivity
06/10/1998EP0846387A1 Trellis coded qam using rate compatible, punctured, convolutional codes
06/10/1998EP0846383A1 Timing recovery and frame synchronization in a cellular communications system
06/10/1998CN1184571A Apparatus for multi-rate simulcast communications
06/09/1998US5765097 Shared hybrid fiber-coax network having reduced ingress noise in the upstream channel transmitted via a repeater
06/09/1998US5764707 Method and apparatus for improved phase shift keyed (PSK) signal demodulation
06/09/1998US5764706 AM compatible digital waveform frame timing recovery and frame synchronous power measurement
06/09/1998US5764705 Adaptive phase shift adjuster for resonator
06/09/1998US5764704 DSP implementation of a cellular base station receiver
06/09/1998US5764701 VSB modulator
06/09/1998US5764700 Digital radio link system and radio link terminal
06/09/1998US5764692 Dual mode radiotelephone modulator
06/09/1998US5764628 Dual port interface for communication between a voice-over-data system and a conventional voice system
06/09/1998US5764627 Communication system
06/09/1998US5764171 Quadrature signal conversion device
06/09/1998US5764113 Re-sampling circuit and modulator using same
06/09/1998US5764094 Level shift circuit for analog signal and signal waveform generator including the same
06/09/1998CA2124709C Reduced speed equalizer
06/04/1998WO1998024258A2 Adaptive channel allocation method and apparatus for multi-slot, multi-carrier communication system