Patents for H04L 27 - Modulated-carrier systems (89,721)
09/2004
09/15/2004EP1090490B1 Multicarrier communication with variable overhead rate
09/15/2004EP0935440B1 Method for wireless communication transfer with an implanted medical device
09/15/2004EP0901725B1 An apparatus, method and article of manufacture for carrier frequency compensation in an fm radio transmitter
09/15/2004CN1529970A Poppler spread/velcocity estimation in mobile wireless communication device and methods thereof
09/15/2004CN1529947A 接收机和通信终端 The receiver and the communication terminal
09/15/2004CN1529525A Device and method for detecting defined frame synchronization of channel contour window
09/15/2004CN1529521A Multi-carrier auto-gain calibrating device and method
09/15/2004CN1529492A Improved ADSL compatible discrete multi-tone apparatus
09/15/2004CN1529484A Method and device for realing differential-deviation four-phase key-control coherent demodulation
09/15/2004CN1529438A CDMA spectrum-spreading method, despreading method and receiver
09/15/2004CN1529433A Low-complexity portion parallel transmission method for multi-carrier direct spread spectrum CDMA system
09/15/2004CN1529432A Method and appartus for equalization complementray carriers in an AM compatible digital audio broadcast system
09/15/2004CN1167236C High-frequency receiver
09/15/2004CN1167235C Channel presuming system and channel presuming method through detecting component of phase rotation
09/15/2004CN1167234C Sign timing restoring circuit of phase demodulator and its method
09/15/2004CN1167230C Communication system, communicaton control apparatus and method
09/15/2004CN1167025C Fast fourier transformation equipment for compensating outcoming signal and its method
09/14/2004US6792258 Diversity reception method and diversity receivers
09/14/2004US6792054 Method for reducing complex frequency down-conversion impairments
09/14/2004US6792050 Ask modulation apparatus and method
09/14/2004US6792049 Digital transceiver system with adaptive channel pre-coding in an asymmetrical communications network
09/14/2004US6791965 Code multiplexing transmitting apparatus
09/14/2004US6791964 Multicarrier CDMA rake receiver apparatus
09/14/2004US6790116 Radio communication apparatus and radio frequency correcting method
09/10/2004WO2004077778A1 Power and bit loading allocation in a communication system with a plurality of channels
09/10/2004WO2004077777A1 Sub-carrier allocation for ofdm
09/10/2004WO2004077776A1 Digitizer device, waveform generation device, conversion method, waveform generation method, and recording medium containing the program thereof
09/10/2004WO2004077774A1 Wireless data transmission method, and corresponding signal, system, transmitter and receiver
09/10/2004WO2004077730A2 Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation
09/10/2004WO2004077713A1 A method and apparatus of estimating carrier frequency
09/10/2004WO2004077712A1 Radio communication system and radio communication method
09/10/2004WO2004077709A2 Method and apparatus for reducing interference within a communication system
09/10/2004WO2004077684A2 Communication method, system, and apparatus that combines aspects of cyclic prefix and zero padding techniques
09/10/2004WO2004077276A2 Fast fourier transform and ofdm receiver
09/10/2004WO2004059932A3 Optimization of soft decision device and feedback equalizer
09/10/2004WO2004034667A3 Electromagnetic wave trasmitter systems, methods and articles of manufacture
09/10/2004WO2003090348A8 Decision feedback equalizer
09/10/2004CA2517207A1 Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation
09/10/2004CA2497392A1 Power and bit loading allocation in a communication system with a plurality of channels
09/09/2004US20040177310 Narrow band chaotic bi-phase shift keying
09/09/2004US20040176148 Mobile communication terminal including automatic frequency control function
09/09/2004US20040176120 Method and system for acquiring ultra-wide-bandwidth communications signals using sequential block searches
09/09/2004US20040176119 Method and system for acquiring ultra-wide-bandwidth communications signals using average block searches
09/09/2004US20040176063 Apparatus and method for transmitting and receiving ultra wideband signals
09/09/2004US20040174984 Method and apparatus for DTMF detection and voice mixing in the CELP parameter domain
09/09/2004US20040174942 Integrated circuit
09/09/2004US20040174903 Reduced symbol rate handshake signaling in ADSL systems
09/09/2004US20040174845 Handoff system using an initial ranging scheme in a broadband wireless access communication system and method for controlling the same
09/09/2004US20040174843 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
09/09/2004US20040174842 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
09/09/2004US20040174841 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
09/09/2004US20040174811 OFDM automatic frequency control device and method thereof
09/09/2004US20040174809 Communication method, system, and apparatus that combines aspects of cyclic prefix and zero padding techniques
09/09/2004US20040174808 Method for reducing signaling overhead in a multicarrier system with dyanamic bit allocation and corresponding transmission/receiver device
09/09/2004US20040174222 Phase modulating system
09/09/2004US20040174220 Tunable power amplifier matching circuit
09/09/2004DE19539939B4 Codesender, insbesondere für ein Diebstahlschutzsystem eines Kraftfahrzeugs Code transmitter, in particular for a theft protection system of a motor vehicle
09/09/2004DE10307429A1 Method for selection of mixed frequency for transceivers of cordless digital communication apparatus, with intermediate frequency (IF) set both considering appearing harmonics
09/09/2004DE102004001998A1 Fehlerkorrektur in Direktumsetzungsarchitekturen Error correction in direct conversion architectures
09/08/2004EP1455497A2 Mobile communication terminal using both a continuous and an intermittent pilot for channel estimation
09/08/2004EP1455476A2 Adaptive modulation transmission system, transmission device, reception device, and method thereof
09/08/2004EP1455444A1 Device and method for predistorting an input signal
09/08/2004EP1454467A2 Rate selection for an ofdm system
09/08/2004EP1454466A2 Rate selection for an ofdm system
09/08/2004EP1454150A1 Method and device for graphically representing the i and/or q components of digitally modulated high frequency signals
09/08/2004EP1198916A4 Method and system for generating a power control metric in an orthogonal transmit diversity communication system
09/08/2004EP1158702B1 Method for broadcasting to subscriber units information about the availability of channels in a CDMA system
09/08/2004EP1050127B1 Method and apparatus for synchronizing a data communication system to a periodic digital impairment
09/08/2004EP0903016B1 Code division multiple access communication system
09/08/2004CN1528095A Multi-detection of heart beat to reduce error probability
09/08/2004CN1528094A Transmission of heart beat signal at a lower level than heart beat request
09/08/2004CN1528065A Method and device for transmitting data in a multi-carrier system comprising parallel concatenated coding and modulation
09/08/2004CN1528059A Downlink synchronisation method for a point-to-mutipoint system wit OFDM modulation
09/08/2004CN1527620A Method of estimating power of interference signal code
09/08/2004CN1527555A 集成电路 IC
09/08/2004CN1527516A Method and device for producing received used codes in CDMA radio communication system
09/08/2004CN1527514A Eliminator for interference wave caused by interference
09/08/2004CN1527513A Information processing method and device using time domain pilot sequence in OFDM system
09/08/2004CN1527512A Training sign generating and transmitting method in orthogonal frequency-division multiplexing system
09/08/2004CN1527499A Method and system for decoding low-density parity check code
09/08/2004CN1527488A Starting of multi-xDSL modulator-demodulator with hidden channel probe
09/08/2004CN1166192C Data frame generating method and receiver
09/08/2004CN1166190C Apparatus for processing received data flow and processing method
09/08/2004CN1166164C Method for transmitting high bit rate digit signal
09/08/2004CN1166140C Appts. methods and computer program products for sequential maximum likelihood estimating communications signals using whitening path meterics
09/08/2004CN1166139C Synchronization and detection of modulation type
09/08/2004CN1166138C Adaptive digital pre-distortion method and device for wideband transmitter
09/08/2004CN1166128C Complex constellation point multiplier
09/08/2004CN1166101C Method of realizing CDMA base band system accurate coherent demodulation
09/08/2004CN1166090C Correction for N end receiver
09/08/2004CN1166080C Channel estimation device and method for radio system
09/08/2004CN1166053C Adaptive RF digital pre-distortion linearization method and circuit
09/08/2004CN1166052C Static viterbi detector for channels utilizing code having time varying constraints
09/07/2004US6788752 Multi-carrier transmission system
09/07/2004US6788750 Trellis-based decoder with state and path purging
09/07/2004US6788749 Erasure based instantaneous loop control in a data receiver
09/07/2004US6788747 Receiver capable of receiving analog broadcast and digital broadcast and IC for the same
09/07/2004US6788744 Power control circuit and transmitter
09/07/2004US6788742 Variable length trellis for data transmission
09/07/2004US6788737 Communication terminal apparatus, base station apparatus and communication method