Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 27 - Modulated-carrier systems
Patents for H04L 27 - Modulated-carrier systems (89,721)
04/1996
04/18/1996WO1996011526A1 Digital qam and vsb modulator and demodulator
04/18/1996WO1996008865A3 Quadrature modulator with integrated distributed rc filters
04/17/1996EP0707402A2 Trellis coded modulation employing lower dimensionality convolutional encoder
04/17/1996EP0707391A2 Flash FM infrared modem
04/17/1996EP0707387A2 Spread-response precoding system for wireless transmission
04/17/1996EP0707386A2 Multi-user communication system employing spread signatures
04/17/1996EP0706730A1 Method and apparatus for automatic gain control and dc offset cancellation in quadrature receiver
04/17/1996CN1120777A Digital data receiver
04/17/1996CN1120767A Multiprotocol directed infrared communication controller
04/16/1996US5509036 Synchronizing signal detection apparatus
04/16/1996US5509033 Quadrature overlapping modulation system
04/16/1996US5509030 RF receiver AGC incorporating time domain equalizer circuity
04/16/1996US5508748 Digital data processor
04/11/1996WO1996010879A1 Method and apparatus for coherent communication reception in a spread-spectrum communication system
04/11/1996WO1996010873A1 Multipath search processor for a spread spectrum multiple access communication system
04/11/1996WO1996006494A3 Nonlinear digital communications system
04/11/1996CA2174243A1 Multipath search processor for a spread spectrum multiple access communication system
04/10/1996EP0706277A2 Microcomputer FSK modulator
04/10/1996EP0706274A2 Device for clock synchronisation in a receiver of a transmission system
04/10/1996EP0706273A2 Method of and apparatus for demodulating a signal conveyed by multiple carriers
04/10/1996EP0706271A2 Method and apparatus for integrated testing of a system containing digital and radio frequency circuits
04/10/1996EP0706259A1 Automatic calibration of carrier suppression and loop phase in a cartesian amplifier
04/10/1996EP0705513A1 Digital signal demodulation method and device
04/10/1996CN1120269A Apparatus and method for detecting signal points using signal point-mapping
04/09/1996US5507037 Apparatus and method for discriminating signal noise from saturated signals and from high amplitude signals
04/09/1996US5507033 Apparatus and method for increasing data transmission rate over wireless communication systems using spectral shaping
04/09/1996US5507014 Radio transmitter circuit with time dependant inhibited transmissions
04/09/1996US5506873 Demodulator for a phase shift keying (PSK) signal
04/09/1996US5506866 Side-channel communications in simultaneous voice and data transmission
04/09/1996US5506865 Pilot carrier dot product circuit
04/09/1996US5506863 Method and apparatus for operating with a hopping control channel in a communication system
04/09/1996US5506836 Orthogonal frequency division multiplex demodulation
04/09/1996US5506636 HDTV signal receiver with imaginary-sample-presence detector for QAM/VSB mode selection
04/09/1996US5506548 SSB modulator for adjusting the carrier amplitude level of a modulated SSB signal
04/09/1996US5506546 Method and apparatus for generating transmitting wave
04/04/1996WO1996010310A1 Digital modulation method with controlled envelope variation
04/04/1996WO1996010309A1 Receiver having an adjustable symbol slice demodulator
04/04/1996DE19535839A1 Automatischer Amplitudenentzerrer An automatic amplitude
04/04/1996DE19526555A1 Dekodierer zum Dekodieren eines kodierten, mehrwertigen Signals unter Verwendung eines Viterbi-Dekodierverfahrens Decoder for decoding a coded multi-valued signal by using a Viterbi decoding method
04/04/1996CA2177583A1 Digital modulation method with controlled envelope variation
04/03/1996EP0705011A1 Digital demodulator with frequency error correction
04/03/1996EP0705010A1 Transmitter with compensation of power amplifier distortion
04/03/1996EP0704986A2 CDMA cellular communications with multicarrier signal processing
04/03/1996EP0704983A2 Method and apparatus for processing multicarrier signals
04/03/1996EP0704814A2 Magnetic coupling circuit-driving system
04/03/1996EP0704122A1 Process and arrangement for adjusting the local oscillators of a receiver in a multi-channel transmission system
04/02/1996US5504785 Digital receiver for variable symbol rate communications
04/02/1996US5504783 Frequency diversity transmitter and receiver
04/02/1996US5504775 Multi-user spread spectrum communication system
04/02/1996US5504465 Microwave modulator having adjustable couplers
04/02/1996US5504461 High speed slotline BPSK modulator
04/02/1996US5504455 Efficient digital quadrature demodulator
04/02/1996US5504454 Demodulator for powerline carrier communications
04/02/1996US5504453 Method and device for estimating phase error
04/02/1996CA2069142C Digital class receiver
04/02/1996CA2053476C Power amplifier and mobile radio apparatus with the same
04/02/1996CA2021539C Multipoint communication system with retraining of modems
03/1996
03/30/1996CA2159423A1 Digital demodulator with frequency correction
03/28/1996WO1996009694A1 An ultrawide-band communications system and method
03/28/1996CA2200475A1 An ultrawide-band communications system and method
03/27/1996EP0703689A1 Method and system for transmitting and receiving digital signals, in which the peak power of the transmitted filtered signal is reduced
03/27/1996EP0703688A1 Phasedetector for carrier recovery control
03/27/1996EP0703687A1 Carrier recovery for PSK signals
03/27/1996EP0703685A2 Adaptive hybrid ARQ/FEC technique for multitone/multicarrier mtransmission
03/27/1996EP0702867A1 Heterodyne receiver having low intermediate frequency
03/27/1996EP0702866A1 Signaling packet for communication system with modulated reference according to a time-base law
03/27/1996CN1119389A Digital VSB detector with bandpass phase tracker using rader filters, as for use in an HDTV receiver
03/26/1996US5502745 BPSK modulator for a digital signal transmitter
03/26/1996US5502744 System for communicating digital data words
03/22/1996CA2155998A1 Adaptive arq/fec technique for multitone transmission
03/21/1996WO1996008906A1 A method of demodulation and demodulator
03/21/1996WO1996008905A1 Method for demodulating digitally modulated data signals
03/21/1996WO1996008904A1 Simultaneous demodulation and decoding of a digitally modulated radio signal
03/21/1996WO1996008903A1 Blind equalizing apparatus
03/21/1996WO1996008866A1 Efficient linear power amplification
03/21/1996WO1996008865A2 Quadrature modulator with integrated distributed rc filters
03/21/1996CA2199935A1 Quadrature modulator with integrated distributed rc filters
03/21/1996CA2199932A1 Method for demodulating digitally modulated data signals
03/20/1996EP0702476A2 Multilevel weighted transmission method and multilevel weighted transmission and reception apparatus
03/20/1996EP0702475A1 Multi-threshold detection for 0.3-GMSK
03/20/1996EP0702469A1 Detector for FSK training sequences
03/20/1996EP0702467A1 Digital transmission system synchronizable on initialization sequences
03/20/1996EP0702466A2 Reduction of peak to average power ratio for OFDM
03/20/1996EP0702463A2 Improved subcarrier multiple access passive optical network
03/20/1996EP0702454A1 Detector for the presence of a transmission in a modem
03/20/1996EP0701752A1 A method and apparatus for determining signal usability
03/19/1996US5500878 Automatic frequency control apparatus and method therefor
03/19/1996US5500877 Receiver for a superpose modulated signal
03/19/1996US5500876 Phase error canceller for QPSK signals using unique word detectors
03/19/1996US5500875 For encoding/decoding digital signals for transmission on analog media
03/19/1996US5500871 Spread spectrum communication transmitter an LSI therefor
03/19/1996US5500859 Voice and data transmission system
03/19/1996US5500620 Timing recovery for digital demodulation
03/16/1996CA2153515A1 Subcarrier multiple access passive optical network
03/14/1996WO1996008100A1 Method and apparatus for aligning a digital receiver
03/14/1996WO1996008078A1 Receiver with quadrature decimation stage, method of processing digital signals
03/14/1996WO1996008077A1 Transmission and reception of cpm spread-spectrum communications
03/14/1996WO1996002990A3 Method and device for synchronization of transmitter and receiver in a digital system
03/14/1996CA2199525A1 Transmission and reception of cpm spread-spectrum communications
03/13/1996EP0701352A2 Automatic adaptatioof prewarping for transmission over a non-linear channel
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