Patents for H04L 27 - Modulated-carrier systems (89,721)
09/2000
09/06/2000EP1033853A2 OFDM transmission/reception apparatus with improved protection of control data
09/06/2000EP1033852A1 DC offset correction for direct-conversion receiver
09/06/2000EP1033839A2 Sync signal detection method and radio communication system
09/06/2000EP1033027A2 Communications methods and apparatus
09/06/2000EP1033004A1 Method and constructions for space-time codes for psk constellations for spatial diversity in multiple-element antenna systems
09/06/2000EP1032994A1 Method and device for change of reception frequency in a digital audio broadcasting system receiver
09/06/2000EP1032975A1 Method and apparatus for estimating a frequency offset
09/06/2000CN1265793A Method and apparatus for transmitting signals in communication system
09/06/2000CN1265758A Circuit for manipulation-protected reception of ook-modulated signal
09/06/2000CN1265556A Communication device capable of effectively controlling power supply, method and media of controlling power supply
09/06/2000CN1265547A Improved phase estimation for use in reinsertion of phase-modulated signal carrier such as quadrature-amplitude modulated signal carrier
09/06/2000CN1265544A Method and system for compensating channel dustortion using lagrange's polynomial interopolation method
09/06/2000CN1265543A Demodulator, modulator circuit and demodulating, modulating method
09/06/2000CN1265542A Orthogonal frequency division multiplex ransmitting/receiving system
09/05/2000US6115473 Receiving apparatus for digital broadcasting
09/05/2000US6115466 Subscriber line system having a dual-mode filter for voice communications over a telephone line
09/05/2000US6115435 Soft decision method and receiver
09/05/2000US6115433 Adaptively-equalized digital receiver with carrier tracking
09/05/2000US6115432 High-frequency signal receiving apparatus
09/05/2000US6115431 Phase detecting method and phase tracking loop circuit for a digital vestigial sideband modulation communication device
09/05/2000US6115429 Data receiving method for receiving data through predetermined clear zones of a powerline
09/05/2000US6115428 Apparatus for and method of generating π-/N-shifted N-differential encoded phase shift keying modulation signals
09/05/2000US6115427 Method and apparatus for data transmission using multiple transmit antennas
09/05/2000US6115426 Adaptive communication apparatus
09/05/2000US6115419 Adaptive digital beamforming receiver with π/2 phase shift to improve signal reception
09/05/2000US6115417 Signal quality measuring scheme
09/05/2000US6115415 Mapper for high data rate signalling
09/05/2000US6115354 Multiple carrier transmission in common-wave networks
09/05/2000US6114921 Double-balanced modulator and quadri-phase shift keying device
09/01/2000CA2298325A1 Iterative differential detector
08/2000
08/31/2000WO2000051311A1 Communication device and method of eliminating intereference in this communication device
08/31/2000WO2000051304A1 Express bit swapping in a multicarrier transmission system
08/31/2000WO2000051303A1 Apparatus and method of tone allocation in digital subscriber line systems
08/31/2000WO2000051301A1 Multicarrier signal receiver with correction of equalization faults induced by the trf window displacements
08/31/2000WO2000051275A1 Digital broadcasting apparatus
08/31/2000WO2000051255A1 Universal dsl link interface between a dsl digital controller and a dsl codec
08/31/2000WO2000051254A1 Radio receiver and method for preloading an average dc-offset into a channel filter
08/31/2000WO2000051252A1 Radio terminal device
08/31/2000WO2000051236A2 Method and apparatus for frequency synchronisation in a digital radio communications system
08/31/2000CA2359086A1 Apparatus and method of tone allocation in digital subscriber line systems
08/31/2000CA2330078A1 Communication device and interference rejection method therein
08/30/2000EP1032174A2 OFDM-OQAM multicarrier transmission systems
08/30/2000EP1032173A2 Frequency offset correction in multicarrier receivers
08/30/2000EP1032172A2 Decision directed phase locked loop (DD-PLL) for use with short block codes in digital communication systems
08/30/2000EP1032171A2 Frequency synchronisation for digital signals
08/30/2000EP1032169A1 System for estimating the complex gain of a transmission channel
08/30/2000EP1032168A2 Channel estimation, using interpolation based on Lagrange polynomials
08/30/2000EP1032153A2 Encoding of data for transmission over channels with impulsive noise
08/30/2000EP1032150A2 A method for high speed modulation and error control coding
08/30/2000EP1031849A1 Device for receiving signals from satellite radio-navigation systems
08/30/2000EP1031848A1 Method for increasing interference immunity when receiving signals from satellite navigation systems and device for realising the same
08/30/2000EP1031219A1 Qam modulation using direct digital synthesis and upconversion
08/30/2000EP1031218A1 Time-varying trellis coded psk
08/30/2000EP1031217A1 Methods and apparatus for optimizing shell mapping techniques using an approximated power cost function
08/30/2000EP1031199A1 Improvement in, or relating to, subscriber line transmission systems
08/30/2000EP1031188A1 A field programmable radio frequency communications equipment including a configurable if circuit and method therefor
08/30/2000EP1031184A1 Front end interface circuit and method of tuning the same
08/30/2000CN1265249A Circuit for detecting phase of received signal
08/30/2000CN1265248A Signal point arrangement dipersion calculation circuit
08/30/2000CN1265237A Method and appts. for converting wide band if signal to complex (quadrature) baseband signal
08/30/2000CN1264968A Frequency deviation corrector and frequency deviation correcting method
08/29/2000US6112180 Data transmission and reception methods and data transmission and reception apparatus
08/29/2000US6112071 Quadrature-free RF receiver for directly receiving angle modulated signal
08/29/2000US6111923 System and method for calculating a state transition metric in a viterbi equalizer
08/29/2000US6111922 Circuit for detecting word sequences in a modem
08/29/2000US6111919 Synchronization of OFDM signals
08/29/2000CA2180203C Radio communication apparatus and method
08/29/2000CA2179977C Code-division multiple-access base station transmitter
08/29/2000CA2152315C Soft decision signal outputting receiver
08/26/2000CA2299017A1 A method for high speed modulation and error control coding
08/24/2000WO2000049782A2 A system and method for recovering symbol timing offset and carrier frequency error
08/24/2000WO2000049781A1 Method for detecting pilot signals
08/24/2000WO2000049710A1 Direct digital vestigial sideband (vsb) modulator
08/24/2000WO1999037051A3 Method and apparatus for synchronizing a data communication system to a periodic digital impairment
08/24/2000WO1998039872A3 Improvements in, or relating to synchronisation
08/24/2000DE19906293A1 Method of detecting pilot tones for mobile telephones
08/24/2000CA2663122A1 A system and method for recovering symbol timing offset and carrier frequency error in an ofdm digital audio broadcast system
08/24/2000CA2362029A1 A system and method for recovering symbol timing offset and carrier frequency error in an ofdm digital audio broadcast system
08/23/2000EP1030490A2 Method and apparatus for discrete multitone communication bit allocation
08/23/2000EP1030489A1 Multicarrier transceiver
08/23/2000EP1030488A2 Coherent detection system for multicarrier signals
08/23/2000EP1030487A2 Method for synchronizing transmitter and receiver during data transmission using multicarrier on a power line
08/23/2000EP1030458A2 Wideband parallel processing digital tuner
08/23/2000EP1029397A1 Reconfigurable radio system architecture
08/23/2000EP1029396A1 Receiver for a reconfigurable radio system and method therefor
08/22/2000US6108810 Digital audio broadcasting method using puncturable convolutional code
08/22/2000US6108525 Transceiver
08/22/2000US6108387 AFC circuit for a frequency scanning receiver
08/22/2000US6108385 Method and apparatus for reducing intermodulation distortion in digital wideband transmission systems
08/22/2000US6108375 Equalization circuit for unknown QAM constellation size
08/22/2000US6108374 System and method for measuring channel quality information
08/22/2000US6108373 Process and device for detecting loss of carrier recovery and of determining the Eb/No ratio of a digital transmission link
08/22/2000US6108353 Demodulating apparatus
08/22/2000US6108349 Method and apparatus for registering remote service units in a multipoint communication system
08/22/2000CA2298273A1 Method and system for compensation of channel distortion using lagrange polynomial interpolation
08/22/2000CA2206137C Demodulator
08/17/2000WO2000048371A1 Clock reproducing circuit
08/17/2000WO2000048370A2 Modem with a reduced state maximum likelihood sequence estimator
08/17/2000WO2000048369A1 Termination of coded or uncoded modulation with path-oriented decoder
08/17/2000WO2000048346A2 A non-coherent, non-data-aided pseudo-noise synchronization and carrier synchronization for qpsk or oqpsk modulated cdma system