Patents for H04L 27 - Modulated-carrier systems (89,721)
01/2002
01/16/2002EP1172979A2 Data transmission system which can use various modulation types
01/16/2002EP1172959A2 Hybrid automatic repeat-request system and method
01/16/2002EP1172956A1 OFDM packet communication receiver
01/16/2002EP1172947A2 Asymmetric bandwith wireless communication techniques
01/16/2002EP1172945A2 Diversity demodulation apparatus
01/16/2002EP1172932A2 A receiver
01/16/2002EP1172927A1 Quadrature demodulator using power sensors
01/16/2002EP1171984A1 Qam modulator
01/16/2002EP1171983A1 Multicarrier receiver with channel estimator
01/16/2002EP1171981A1 Digital gmsk filter
01/16/2002EP1072136B1 Echo phase offset correction in a multicarrier demodulation system
01/16/2002EP0757858B1 Method and apparatus for automatic gain control in a digital receiver
01/16/2002EP0662270B1 Method for synchronising transmitter frequencies in common wave digital audio broadcast
01/16/2002CN1331876A Method for suppressing narrow frequency bands
01/16/2002CN1331871A Method for equalization of complementary carriers in am compatible digital audio broadcast system
01/16/2002CN1331528A Pilot mode design for STTD program in OFDM system
01/16/2002CN1331518A Receiving method and receiving device thereof
01/16/2002CN1078033C Circuit for detecting completion of carrier receovery and symbol timing recovery, method thereof, and HDTV
01/16/2002CN1078026C Determinig method, determing device and data extracting device for big or small received data signals
01/15/2002US6339624 Trellis decoding with multiple symbol noncoherent detection and diversity combining
01/15/2002US6339623 Reference carrier generator device for pulling a reference carrier out of a false stabilized point into a correct stabilized point of synchronism
01/15/2002US6339621 One bit digital quadrature vector modulator
01/15/2002US6339612 Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system
01/15/2002US6339599 Collision handling scheme for discrete multi-tone data communications network
01/12/2002CA2352449A1 Device for analysing electromagnetic signals
01/10/2002WO2002003643A1 Decsion-directed carrier frequency detector and method for qam
01/10/2002WO2002003641A1 Cofdm transmitter with diversity and time delay
01/10/2002WO2002003640A1 Method for the transmission of digital data by means of radio signals with orthogonal frequency division multiplexing (ofdm)
01/10/2002WO2002003639A1 Configurable exciter for information transmission systems
01/10/2002WO2002003636A1 Viterbi equalization using precalculated metrics increments
01/10/2002WO2002003602A1 Digital broadcast transmission with system monitor and display
01/10/2002WO2002003556A2 Method and apparatus for channel gain and channel delay estimation in a multi-carrier cdma system
01/10/2002WO2001048969A3 Multiuser ofdm or dmt communications system for users transmitting at different data rates
01/10/2002US20020004920 Apparatus and method for measuring bit error rate in an OFDM communication system
01/10/2002US20020004871 xDSL symbol processor & method of operating same
01/10/2002US20020004400 Time of arrival estimation for edge/GSM
01/10/2002US20020003847 Clock recovery circuit
01/10/2002US20020003843 Method and apparatus for high data rate wireless communications over wavefield spaces
01/10/2002US20020003798 Rendering multicast service with sufficient reception quality to wireless terminals
01/10/2002US20020003774 Pilot pattern design for a STTD scheme in an OFDM system
01/10/2002US20020003772 Method and apparatus for generating orthogonal frequency division multiplexed signal
01/10/2002US20020003450 RF slipring receiver for a computerized tomography system
01/09/2002EP1170918A1 Method and apparatus for generating orthogonal frequency division multiplexed (OFDM) signal
01/09/2002EP1170917A1 Method and device to provide an OFDM up-link using Time-Frequency interleaving
01/09/2002EP1170916A1 Channel estimator for OFDM system
01/09/2002EP1170915A1 Signal modulation circuit and method for signal modulation
01/09/2002EP1170897A1 Pilot pattern design for a STTD scheme in an OFDM system
01/09/2002EP1170873A1 Phase coherent FSK transmitter
01/09/2002EP1170696A2 Non contact type ic card and system and data transmission method therefor
01/09/2002EP1169824A1 Peer-to-peer communication system with receiver adjustment using stored transmission parameters
01/09/2002EP1169783A1 Signal identification in cdma-radio systems
01/09/2002EP1169780A1 Universal dsl link interface between a dsl digital controller and a dsl codec
01/09/2002CN1330826A QAM modulator for radio communications
01/09/2002CN1330808A Transmitter linearization
01/09/2002CN1330457A Radio communication device
01/09/2002CN1330454A Turbo grille coding modulation
01/09/2002CN1077753C Alogorithmic controlling method of blind balancing system
01/09/2002CN1077749C Precision FFT window position recovery apparatus of orthogonal frequency-division multiplexer system receiver
01/09/2002CN1077746C Output power controller
01/08/2002US6337976 Selective-calling radio receiver using direct conversion method
01/08/2002US6337888 In-phase and quadrature signal regeneration
01/08/2002US6337885 Radio receiver that digitizes a received signal at a plurality of digitization frequencies
01/08/2002US6337877 Method and apparatus for scaling modem transfer capacity in a multi-channel communications system
01/08/2002US6337876 Control of power ratios for in-phase and quadrature channels in a communications system
01/08/2002US6337875 Method and apparatus for generating complex four-phase sequences for a CDMA communication system
01/08/2002US6337606 Digital communications modulator having a modulation processor which supports high data rates
01/08/2002CA2209083C Method and apparatus for decoding an encoded signal
01/08/2002CA2085890C System and method for generating signal waveforms in a cdma cellular telephone system
01/07/2002CA2313672A1 Ofdm system with simple terminals
01/03/2002WO2002102130A2 Control of power spectral density by modulation of subcarriers which do not carry data
01/03/2002WO2002001825A1 Detection and correction of phase jumps in a phase sequence
01/03/2002WO2002001788A2 Dual bit error rate estimation in a qam demodulator
01/03/2002WO2002001749A2 Ofdm antenna diversity receiver
01/03/2002WO2002001739A1 Method and apparatus to reduce spurious and intermodulation products through static non-linearity correction of digital conversion
01/03/2002WO2002001737A2 Method and system for sending information over metal wire
01/03/2002WO2002001729A2 Rate n/n systematic, recursive convolutional encoder and corresponding decoder
01/03/2002WO2001080510A8 Data allocation with variable snr margins
01/03/2002WO2001073954A3 Asymmetric digital subscriber line methods suitable for long subscriber loops
01/03/2002WO2001067593A3 Improved method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio
01/03/2002WO2001043384A3 Viterbi slicer for turbo codes
01/03/2002WO2001033811A3 Background communication using shadow of audio signal
01/03/2002WO2000074265A8 Communication device and communication method
01/03/2002US20020001355 Receiver and method for avoiding intersymbol interference in a high speed transmission system
01/03/2002US20020001353 Enhanced slice prediction feedback
01/03/2002US20020001352 Channel estimator for OFDM system
01/03/2002US20020001350 Method and system for broadcasting a digital data signal within an analog TV signal using orthogonal frequency division multiplexing
01/03/2002US20020001349 Robust digital communication system
01/03/2002US20020001341 Method of, and receiver for, estimating the bit rate of data
01/03/2002US20020001340 Asymmetric digital subscriber line methods suitable for long subscriber loops
01/03/2002US20020000890 Radio communications apparatus
01/03/2002US20020000881 Adaptive distortion-compensation apparatus
01/03/2002US20020000876 FSK signal demodulating integration-discharge circuit
01/03/2002US20020000620 Semiconductor integrated circuit
01/03/2002DE10030390A1 Demodulationsverfahren und Demodulator für CPFSK-modulierte Signale A demodulating method and demodulator for CPFSK-modulated signals
01/03/2002CA2406012A1 Dual bit error rate estimation in a qam demodulator
01/02/2002EP1168748A2 Peak power reduction in a multicarrier modulator
01/02/2002EP1168747A2 Control of interpolation in a multicarrier receiver
01/02/2002EP1168746A2 Data allocation to aid frequency-domain interpolation
01/02/2002EP1168745A1 Radio communication terminal capable of specifying burst position accurately and having small frequency error of regenerative carrier wave
01/02/2002EP1168744A1 Timing reproducing device and demodulator