Patents for H04L 27 - Modulated-carrier systems (89,721)
11/2001
11/08/2001DE10118989A1 Digital communications system allocates variable length code words gives bandwidth flexibility
11/08/2001CA2405855A1 Time of arrival estimation for edge/gsm
11/07/2001EP1152577A1 Clock reproducing circuit
11/07/2001EP1152560A1 Coding having peak power suppressing capability and error correcting capability in multi-carrier transmission and its decoding
11/07/2001EP1152558A2 Radio receiver for the reception of frequency modulated radio signals and method for adjusting and testing a reception branch of the radio receiver
11/07/2001EP1152546A2 System for acquiring spread spectrum signals
11/07/2001EP1151759A2 Adaptive, performance-optimizing communication system
11/07/2001EP1151590A1 Method for detecting pilot signals
11/07/2001EP1151589A2 Modem with a reduced state maximum likelihood sequence estimator
11/07/2001EP1151588A1 Termination of coded or uncoded modulation with path-oriented decoder
11/07/2001EP1151532A2 Transmitter linearization
11/07/2001EP1072132B1 Dual-mode receiver for receiving satellite and terrestrial signals in a digital broadcast system
11/07/2001CN1321384A Digital equalising method, and radio communication receiver implementing said method
11/07/2001CN1321383A Encoding/decoding additional symbols in communications system
11/07/2001CN1321377A Communication method and communication device
11/07/2001CN1321376A OFDM communication device and detecting method
11/07/2001CN1321029A Method for generating pseudo-random sequence, correlative emitter and receiver
11/07/2001CN1321018A Route finding circuit for dividing receiving signal into multiple FFT window to reduce mutual correlation number arithmetic operation
11/07/2001CN1074623C 数字正交幅度调制 Digital Quadrature Amplitude Modulation
11/07/2001CN1074622C Device and method for producing Pi/n shifted n difference coded phase-shift key-controlled modulation signal
11/07/2001CN1074608C Wideband vector modulator
11/06/2001US6314148 Synchronization tracking method
11/06/2001US6314146 Peak to average power ratio reduction
11/06/2001US6314145 Tracking carrier timing
11/06/2001US6314144 Digital wireless receiving apparatus
11/06/2001US6314143 Circuit configuration for manipulation-protected reception of an OOK-modulated signal
11/06/2001US6314141 Method for receiving-end automatic identification of a signal at the receiving end, the signal having been transmitted in accordance with the QAM mode, and circuit for carrying out the method
11/06/2001US6314134 Blind equalization algorithm with joint use of the constant modulus algorithm and the multimodulus algorithm
11/06/2001US6314129 Circuit and method for timing recovery in digital communication receiver
11/06/2001US6314113 Method of determining a symbol transmission format in a transmission system and system
11/06/2001US6314102 Telecommunications system for providing both narrowband and broadband services to subscribers
11/06/2001US6314083 Frequency control device and method for frequency synchronization with multiplex signal by OFDM, receiving device, and communication device
11/06/2001US6313885 DTV receiver with baseband equalization filters for QAM signal and for VSB signal which employ common elements
11/06/2001US6313772 Complex carrier signal generator for determining cyclic wave shape
11/05/2001WO2001086900A1 Training of equalisers, for use with signals of differing data rates
11/01/2001WO2001082547A1 System and method for peak power reduction in spread spectrum communications systems
11/01/2001WO2001082546A1 Blind carrier offset detection for quadrature modulated digital communication systems
11/01/2001WO2001082545A2 Device and method for signal sampling at multiple clock rates
11/01/2001WO2001082543A2 Multi-carrier communication systems employing variable ofdm-symbol rates and number of carriers
11/01/2001WO2001082542A2 Adsl system for transmission of voice and data signals
11/01/2001WO2001082538A2 Signal amplitude restoration apparatus and method, especially for chaotic signals
11/01/2001WO2001082501A1 Spread spectrum receiving apparatus
11/01/2001WO2001031870A3 Method and apparatus for distinguishing a compact control channel from a classic control channel
11/01/2001WO2001022673A3 Method and transmitter for transmitting radio signals
11/01/2001US20010037471 System and method for internal operation of multiple-port xDSL communications systems
11/01/2001US20010037443 Logical pipeline for data communications system
11/01/2001US20010037293 Interactive wagering systems for providing wagering information and methods of use
11/01/2001US20010036274 Method to generate pseudo-random sequence of multi-carrier data symbols, and related transmitter and receiver
11/01/2001US20010036261 Configurable analog front end for communication systems
11/01/2001US20010036237 Approach for processing data received from a communications channel in finite precision arithmetic applications
11/01/2001US20010036235 Channel estimation in a communication system
11/01/2001US20010036233 Coding technique in discrete multi-tone (DMT) based communications systems
11/01/2001US20010036228 Approach for processing data received from a communications channel
11/01/2001US20010036222 Mobile radio telephone receiver
11/01/2001US20010036221 Path search circuit dividing a received signal into a plurality of FFT windows to reduce arithmetic operation processes for cross-correlation coefficients
11/01/2001US20010036151 OFDM communication system and method having a reduced peak-to-average power ratio
11/01/2001CA2407722A1 Blind carrier offset detection for quadrature modulated digital communication systems
10/2001
10/31/2001EP1150470A2 OFDM receiving device
10/31/2001EP1150469A2 Retuning in a DAB receiver
10/31/2001EP1150468A1 Method to generate a pseudo-random sequence of multi-carrier data symbols, and related transmitter and receiver
10/31/2001EP1150430A1 Semiconductor integrated circuit
10/31/2001EP1150422A2 Adaptive compensation for carrier signal phase distortion
10/31/2001EP0838115B1 Apparatuses and methods for decoding video signals encoded in different formats
10/31/2001EP0737385B1 Convolutional interleaver and deinterleaver
10/31/2001EP0660978B1 A data decoder and method for use therein using a dynamically indexed channel state metric
10/31/2001DE3843131C2 Verfahren und Anordnung zur Erzeugung von zwei verschiedenen Tonfrequenzen für AFSK-Modulation Method and apparatus for producing two different sound frequencies for AFSK modulation
10/31/2001CN1320317A Time-frequency differental encoding for multicarrier system
10/31/2001CN1320308A Communication terminal device and channel estimating method
10/31/2001CN1320303A Method for selecting modulation detector in receiver and receiver
10/31/2001CN1320301A Fractional-N frequency synthesiser
10/31/2001CN1074218C Method and apparatus for multi-phase component deownconversion
10/31/2001CN1074215C Digital communications equipment using differential guaternary frequency shift keying
10/30/2001US6311047 Gain control method and circuit
10/30/2001US6310926 Adjustment of the sampling frequency in a multicarrier receiver
10/30/2001US6310925 Phase angle detector and frequency discriminator employing the same
10/30/2001US6310924 Digital demodulator
10/30/2001US6310923 Device and method for data encoding and frequency diversity in mobile communications system
10/30/2001US6310909 DSL rate adaptation
10/30/2001US6310906 Chaotic carrier pulse position modulation communication system and method
10/30/2001US6310896 System and method for data sequence correlation in the time domain
10/30/2001US6310869 Method and apparatus for reducing amplitude variations and interference in communication signals, such as in wireless communication signals employing inserted pilot symbols
10/30/2001US6310863 Dual-band data communication device
10/30/2001US6310513 Demodulator and demodulation method for demodulating quadrature modulation signals
10/30/2001US6310502 Broadband phase shifting circuit having two phase shifter branches connected in parallel
10/30/2001CA2214934C Method and apparatus for mobile data communication
10/30/2001CA2195926C Demodulator for receivers used for communications
10/30/2001CA2190222C A microwave multiphase detector
10/25/2001WO2001080511A1 Phase noise and additive noise estimation in a qam carrier recovery circuit
10/25/2001WO2001080510A1 Data allocation with variable snr margins
10/25/2001WO2001080509A1 Compensation of sampling frequency offset and local oscillator frequency offset in a ofdm receiver
10/25/2001WO2001080471A2 Transmitter linearization using fast predistortion
10/25/2001WO2001079877A2 Signal detector and method employing a coherent accumulation system to correlate non-uniform and disjoint sample segments
10/25/2001WO2001078496A2 Method of modulation selection in a communication system
10/25/2001WO2001078495A2 Method of modulation selection and decoding
10/25/2001WO2001078494A2 Mapping method for vsb and atsc in a receiver
10/25/2001WO2001031866A3 Baseband processor with look-ahead parameter estimation capabilities
10/25/2001WO2001017186A3 Subdimensional single-carrier modulation
10/25/2001US20010034215 Transmitter and method of generating a transmission signal
10/25/2001US20010033650 Device for use in communication systems
10/25/2001US20010033648 Method and apparatus for detecting dual tone alerting signal in telephone systems