Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 27 - Modulated-carrier systems
Patents for H04L 27 - Modulated-carrier systems (89,721)
11/2002
11/28/2002CA2448152A1 Synchronisation method for the uplink channel in a point-to-multipoint communication with ofdm modulation
11/28/2002CA2448106A1 Process for synchronization in the downstream of multiple users in a point to multipoint system with ofdm modulation
11/27/2002EP1261182A1 Receiver for frequency modulated signals with digital demodulator
11/27/2002EP1261161A1 Error correcting communication method and communication apparatus to which this communication method is applied
11/27/2002EP1261156A1 Peak power suppressing apparatus and peak power suppressing method
11/27/2002EP1260075A1 Method for coded modulation taking account of the error sensitivity of the user data and encrypting said data after coding
11/27/2002EP1260074A1 Coding method and use of a receiver with a convolutional decoder
11/27/2002EP1260073A1 Method and apparatus for buffering data samples in a software based adsl modem
11/27/2002EP1260049A2 A modulation scheme for fdd/tdd transceivers
11/27/2002EP1260048A1 System for the transmission of data by means of multiple transmission channels with a protective band between each channel
11/27/2002EP1260027A2 Dc-offset correction circuit having a dc control loop and a dc blocking circuit
11/27/2002EP1260024A2 Apparatus for linear transmitter with improved loop gain stabilization
11/27/2002EP1034645B1 Method for estimating an interference phase shift when receiving a multicarrier signal and corresponding receiver
11/27/2002CN1382320A Method for regulating frequency offset in base-station receiver of data communications system
11/27/2002CN1381995A Method for implementing 8PSK equalizing demodulation in EDGE system
11/27/2002CN1381975A VSB compatible pilot frequency generation method for O-QAM transmission system
11/27/2002CN1381974A Method and equipment for using dual pilots to implement carrier restoration in digital transmission
11/27/2002CN1095297C Selective calling radio signal receiving method and equipment
11/27/2002CN1095291C Transmission system with improved tone detection
11/27/2002CN1095268C DQPSK mapping circuit
11/27/2002CN1095260C Device and method for holding frame synchronization in multicarrier transmission systems
11/27/2002CN1095257C Automatic power control system for code division multiple access (CDMA) communication system
11/27/2002CN1095254C Ultrawide-band communications system and method
11/27/2002CN1095252C 无线电接收机 Radio receiver
11/27/2002CN1095245C Biphase or FM moden using flash modulation and modulation-demodulation method
11/27/2002CN1094748C Apparatus for reducing electromagnetic radiation from differentially driven transmission line used for high data rate communication in CT system
11/26/2002US6487405 Communication system with multicarrier telephony transport for controlling a plurality of service units
11/26/2002US6487264 RF modem apparatus
11/26/2002US6487261 Distortion compensating device
11/26/2002US6487260 Method and apparatus for efficient correlation detection
11/26/2002US6487258 Methods and apparatus for decoding data
11/26/2002US6487254 Methods and devices for estimating QAM symbol sequences over flat fading channels using multiple offset sequences
11/26/2002US6487252 Wireless communication system and method for synchronization
11/26/2002US6487244 System and method for transmitting special marker symbol
11/26/2002US6487242 Method and apparatus for VCO modulation in a communication system
11/26/2002US6487241 Method and apparatus employing cutback probe
11/26/2002US6487240 Apparatus for receiving and recovering frequency shift keyed symbols
11/26/2002US6487181 Method and apparatus for transmitting and receiving information in a time slot
11/26/2002US6487174 S/N measuring circuit and method, transmitting electric power control apparatus and digital communicating system
11/26/2002US6486732 Modulator-demodulator
11/26/2002CA2230294C Apparatus and method for digital data transmission
11/21/2002WO2002093962A1 Radio base station and communication terminal
11/21/2002WO2002093862A1 Method for demodulating a signal integrating phase error effect and corresponding receiver
11/21/2002WO2002093861A1 A method of applying quadature amplitude modulation to a radio mobile communication system
11/21/2002WO2002093860A1 Channel estimation for orthogonal frequency division multiplexed (ofdm) signals
11/21/2002WO2002093859A1 Channel decoding apparatus and method in an orthogonal frequency division multiplexing system
11/21/2002WO2002093858A1 Multiple bandwidth amplifier control systems for mobile stations and methods therefor
11/21/2002WO2002093857A1 Combined receiver for signals from different devices with different signal formats
11/21/2002WO2002093856A2 Control of transmission by adjustment of delay between amplitude and phase components
11/21/2002WO2002093822A1 Methods and arrangements relating to a telecommunication system
11/21/2002WO2002093805A1 Multi-carrier communication method and multi-carrier communication apparatus
11/21/2002WO2002093779A2 Transmission in multi-channel communication system using selective channel power control
11/21/2002WO2002093775A1 Automatic gain control system for a multi-user ofdm digital transmission system using the electric grid
11/21/2002WO2002093756A2 Gfsk receiver
11/21/2002WO2002093413A2 Ofdm modulation with reduced dft (discrete fourier transform)
11/21/2002WO2002067614A3 Method for establishing a priority call in a fixed wireless access communication system
11/21/2002WO2002067613A3 Apparatus for reallocating communication resources to establish a priority call in a fixed wireless access communication system
11/21/2002WO2002067612A3 Apparatus for establishing a priority call in a fixed wireless access communication system
11/21/2002WO2002067520A3 Estimating frequency offset
11/21/2002WO2002058409A3 Apparatus and method for creating signal and channel profiles at a receiving station
11/21/2002WO2002051088A3 Direct phase and frequency demodulation
11/21/2002WO2002051086A3 Estimation and correction of sampling timing error in discrete multitone (dmt) receiver by an iterative process over individual carriers
11/21/2002WO2002049385A3 Multi-carrier communications with adaptive cluster configuration and switching
11/21/2002WO2002047374A3 System and method of synchronization recovery in the presence of pilot carrier phase rotation for an atsc-hdtv receiver
11/21/2002WO2001020863A9 Method and apparatus for carrier phase tracking
11/21/2002US20020174242 Modem with code execution adapted to symbol rate
11/21/2002US20020172308 Smart antenna based spectrum multiplexing using existing pilot signals for orthogonal frequency division multiplexing (OFDM) modulations
11/21/2002US20020172298 Radio frequency receiver
11/21/2002US20020172297 Front end processor for data receiver and nonlinear distortion equalization method
11/21/2002US20020172294 Methods and systems for selective interleaving in retransmissions and iterative demodulation of modulated signals with different interleaving
11/21/2002US20020172292 Error floor turbo codes
11/21/2002US20020172291 Pseudo-chaotic communication method exploiting symbolic dynamics
11/21/2002US20020172276 Technique for minimizing decision feedback equalizer wordlength in the presence of a DC component
11/21/2002US20020172274 Method of intelligently restricting symbol size in ADSL modems
11/21/2002US20020172272 Equalizer and equalization method
11/21/2002US20020172213 Signaling method in an OFDM multiple access system
11/21/2002US20020172212 Method and system for increasing data throughput in communications channels on an opportunistic basis
11/21/2002US20020172188 Method for robust, flexible reconfiguration of transceive parameters for communication systems
11/21/2002US20020172184 Orthogonal frequency division multiplexing/modulation communication system for improving ability of data transmission and method thereof
11/21/2002US20020172183 Method and device for transmitting data in radio channels with strong multipath propagation and increased data volume in a radio communication system
11/21/2002US20020172170 Spread spectrum demodulation using a subsampling communication receiver architecture
11/21/2002US20020172147 Communication device and communication method
11/21/2002US20020172146 Mdsl dmt architecture
11/21/2002US20020171771 Phase correction circuit, signal discrimination circuit, phase correction method and signal discrimination method
11/21/2002US20020171476 Negative feedback amplifier and method of controlling loop gain thereof
11/21/2002DE10212686A1 Flexible Bitauswahl unter Verwendung von Turbo-Trellis codierter Modulation Flexible Bit selection using turbo trellis coded modulation
11/21/2002DE10124372A1 Signal generator with optional simulation of channel fading, distortion and noise, employs two base band units, frequency changer, adder and I-Q modulator
11/21/2002DE10123150A1 Verfahren zur Erhöhung der abgestrahlten Leistung bei der Übertragung digitaler Mehrträger-Signale mit AM-Sendern A method for increasing the radiated power in the transmission of digital multi-carrier signals with AM stations
11/21/2002DE10123128A1 Method for synchronizing transmitter/receiver in data transmission in block form locates a multi-value synchronizing sequence with a high ratio between main and subsidiary maxima in a corresponding autocorrelation function.
11/21/2002CA2447256A1 Automatic gain control system for a multi-user digital ofdm transmission systems over the electric network
11/21/2002CA2385358A1 Optimum training sequences for wireless systems
11/20/2002EP1259077A1 Electronic component for decoding of a radio transmission channel carrying digitally coded information, especially for digital satellite broadcast
11/20/2002EP1259041A1 Method and apparatus to determine a modulation type of a short wave broadcast signal
11/20/2002EP1259040A2 Equalisation for QAM signals
11/20/2002EP1259039A2 Equalizer and equalization method
11/20/2002EP1259020A2 Method of intelligently restricting symbol size in adsl modems
11/20/2002EP1259013A1 Device and method for displaying code domain power
11/20/2002EP1259010A1 Method and device for transferring data in radio links with strong multi-path propagation in a radio communication system
11/20/2002EP1259007A2 Apparatus for modulating and demodulating multiple channel FSK in power line communication system
11/20/2002EP1259002A1 Stereo demultiplexer
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