Patents for H04L 27 - Modulated-carrier systems (89,721)
04/2009
04/16/2009CA2641126A1 Multi-format all-digital modulator and method
04/16/2009CA2641114A1 Configurable demodulator and demodulation method
04/15/2009EP2048846A2 Method and apparatus in a base station for transmitting data on the dc tone of a multi-carrier communication system with a predetermined timing pattern
04/15/2009EP2048845A2 Amplitude attenuation estimation and recovery systems for OFDM signals
04/15/2009EP2048842A2 Communications system using adaptive filter for interference reduction
04/15/2009EP2048841A2 Communications system using adaptive filter with adaptive update gain
04/15/2009EP2048794A1 Method and device for data processing and communication system comprising such device
04/15/2009EP2047629A2 False channel detection for wireless communication
04/15/2009EP2047615A2 Method and apparatus for the generation and detection of optical differential varied-multilevel phase-shift keying with pulse amplitude modulation (odvmpsk/pam) signals
04/15/2009EP1695587B1 Method and apparatus for allocating a pilot signal adapted to the channel characteristics
04/15/2009EP1568192B1 Compensating for analog radio component impairments to relax specifications
04/15/2009EP1563659B1 PAPR reduction
04/15/2009EP1282951A4 Frame control encoder/decoder for robust ofdm frame transmissions
04/15/2009CN101411155A Transmitter with delay mismatch compensation
04/15/2009CN101411154A Method of OFDMA tone interference cancellation
04/15/2009CN101411153A Method for mapping channel resource block and terminal equipment
04/15/2009CN101411152A Video over cable modem
04/15/2009CN101411151A Radio reception device, radio transmission device, radio base station, reception method, and transmission method
04/15/2009CN101411148A Delaying retransmission requests in multi-carrier systems
04/15/2009CN101411110A Feedback of channel state information for MIMO and subband scheduling in a wireless communication system
04/15/2009CN101411087A Wireless communication method and system
04/15/2009CN101411084A Method for transmitting data in a communication system
04/15/2009CN101409923A Method, apparatus and base station for resource distribution in OFDM system
04/15/2009CN101409702A Method for selecting wireless resource block offset by sender
04/15/2009CN101409701A Local oscillation buffer and method for correcting phase mismatch
04/15/2009CN101409700A Synchronization method and equipment for multi-carrier communication system
04/15/2009CN101409699A Signal transmission method for wideband wireless mobile commutation system
04/15/2009CN101409698A Data memory of OFDM access system and method for processing baseband signal
04/15/2009CN101409697A Non-sine time-domain quadrature modulation method
04/15/2009CN101409696A Layered combined equilibrium technology based on layered high-order modulation
04/15/2009CN101409694A Method and system for implementing single carrier frequency domain equilibrium
04/15/2009CN101409693A Method and system for implementing single carrier iterative equilibrium using Turbo code
04/15/2009CN101409583A Method and device for transmitting signal
04/15/2009CN101408871A High-efficiency implementing method and equipment of digital crosscorrelator
04/15/2009CN100479446C Communication quality estimation method. communication quality estimation apparatus and communication system
04/15/2009CN100479445C Orthogonal frequency division multiplexing communication method using prefix and suffix signals
04/15/2009CN100479444C Block mode channel estimating method in electric line communication system
04/15/2009CN100479334C Mapping method for encoded bits using LDPC code, transmitting and receiving apparatuses employing this method
04/15/2009CN100479324C Demodulation device and demodulation method
04/15/2009CN100479052C Digital modulation device and digital modulation method
04/14/2009USRE40701 Communication system
04/14/2009US7519132 Reduced complexity multicarrier precoder
04/14/2009US7519131 Method and digital circuit for transmitting a plurality of bit sequences to be transmitted via several bus lines
04/14/2009US7519128 MIMO transmission and reception methods and devices
04/14/2009US7519126 Space-time block-coding (STBC) with multiple streams in orhogonal frequency division mulitplexing (OFDM) for wireless local area networks (WLAN) and error metrics for soft decision with channel information
04/14/2009US7519125 Multicarrier receiver and methods of generating spatial correlation estimates for signals received with a plurality of antennas
04/14/2009US7519121 OFDM demodulation circuit and OFDM reception apparatus using the same
04/14/2009US7519120 Clock EMI reduction
04/14/2009US7519109 Process for configuring an xDSL modem and xDSL modem having such a process
04/14/2009US7519103 Pre-phase error correction transmitter
04/14/2009US7519088 Robust digital communication system
04/14/2009US7519081 Multi-carrier frequency-division multiplexing (FDM) architecture for high speed digital service in local networks
04/14/2009US7519023 Frame structure for an adaptive modulation wireless communication system
04/14/2009US7519018 Method for physical layer automatic repeat request for a subscriber unit
04/14/2009US7519011 Frame structure for radio communications system
04/14/2009US7518460 Amplitude modulation apparatus, amplitude limiting method, and computer-readable program
04/14/2009US7518459 Harmonic-rejection modulation device
04/14/2009US7518438 FM detector circuit with unbalanced/balanced conversion
04/14/2009CA2447934C Single-carrier receiver having a channel equalizer interacting with a trellis decoder and a channel equalization method therefor
04/14/2009CA2326929C A frequency sensitive inductance device in pots splitter design
04/09/2009WO2009046339A1 Center frequency control for wireless communication
04/09/2009WO2009046014A2 Simplified receiver for use in multi-wire communication
04/09/2009WO2009046009A2 Partial discarding of cyclic prefix for efficient tdd or half-duplex fdd operation
04/09/2009WO2009045846A2 Radio signal generator
04/09/2009WO2009045245A1 Time-frequency synchronization and frame number detection for dmb-t systems
04/09/2009WO2009045244A1 Time-frequency synchronization and frame number detection for dmb-t systems
04/09/2009WO2009045135A1 Pilot design for tdd ofdm systems
04/09/2009WO2009045080A2 Map message generating method and apparatus for enhancing map coverage in a wireless communication system
04/09/2009WO2009045076A2 Method and apparatus for allocating resources of a control channel in a mobile communication system using orthogonal frequency division multiplexing
04/09/2009WO2009045048A2 Method and apparatus for transmission of uplink control channel acknowledgement channel for downlink control channel in ofdma mobile communication system
04/09/2009WO2009044962A1 System and method for information scrambling in a wireless communication system
04/09/2009WO2009044256A1 Apparatus and method for channel estimation
04/09/2009WO2009044176A2 Method and device of transmitting an ofdm signal
04/09/2009WO2009043311A1 Time-frequency spreading method and apparatus in ofdma system
04/09/2009WO2009043200A1 Interpolation method and apparatus using tracking filter in multi-carrier receiver
04/09/2009WO2009043172A1 Method and system for adaptive peak to average power ratio reduction in ofdm communication networks
04/09/2009WO2009016263A3 High dynamic range ask demodulator for use in an rfid transponder
04/09/2009WO2008148837A3 Method and apparatus for transmitting encoded data in an ofdm wireless communication system
04/09/2009WO2008134255A3 Systems and methods for providing an atc 0verlay data link
04/09/2009WO2007110858A3 Adaptive receiver loops with weighted decision-directed error
04/09/2009WO2007074453A3 A method of secure wlan communication
04/09/2009WO2007063534A3 High-frequency homepna
04/09/2009WO2007039908A3 Joint constellation multiple access
04/09/2009WO2007021292A3 Device, method and protocol for private uwb ranging
04/09/2009WO2006092662A3 Efficient implementation of gsm/gprs equalizer
04/09/2009WO2005013410A3 Enhanced holographic communications apparatus and method
04/09/2009US20090092401 Quaternary phase modulator
04/09/2009US20090092207 Automatic Gain Control Apparatus
04/09/2009US20090092206 Wireless communication apparatus and wireless communication method using plural communication channels having different bandwidths
04/09/2009US20090092205 Table data generation device and method
04/09/2009US20090092204 Detection circuit and detection method of carrier offset
04/09/2009US20090092202 Method and apparatus for adjusting uplink data rate in a mobile communication system
04/09/2009US20090092197 Ofdm demodulation device and method
04/09/2009US20090092196 Data Transmission Via Multi-Path Channels Using Orthogonal Multi-Frequency Signals With Differential Phase Shift Keying Modulation
04/09/2009US20090092195 Method and system for adaptive peak to average power ratio reduction in orthogonal frequency division multiplexing communication networks
04/09/2009US20090092194 Adaptive pilot design for mobile system
04/09/2009US20090092193 Multi carrier transmission device, multi carrier reception device, and communication method
04/09/2009US20090092192 Multi-frequency data transmission channel power allocation
04/09/2009US20090092182 Method and apparatus for transmitting and receiving space block coding signal through iterative multi-user detection
04/09/2009US20090092087 Multi-antenna transmission for spatial division multiple access