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)
11/2005
11/16/2005CN1227883C Adaptive subcarrier loading method and equipment
11/16/2005CN1227882C Method for estimating the channel properties in a communication system
11/16/2005CN1227881C Demodulator for processing digital signal and parallel FIR filter
11/16/2005CN1227880C Direct conversion receiving apparatus with DC component cut function
11/16/2005CN1227878C Method and circuit for digitally correcting frequency of signal
11/16/2005CN1227856C Clock recovery circuit and receiver having clock recovery circuit
11/16/2005CN1227837C Channel encoding and decoding method and apparatus
11/16/2005CN1227818C Communication apparatus and communication method
11/15/2005USRE38876 System for, and method of, processing quadrature amplitude modulated signals
11/15/2005US6965960 xDSL symbol processor and method of operating same
11/15/2005US6965762 System and method for antenna diversity using joint maximal ratio combining
11/15/2005US6965656 Automatic gain control method and automatic gain control circuit
11/15/2005US6965655 Apparatus for and method of optimizing the performance of a radio frequency receiver in the presence of interference
11/15/2005US6965654 Frequency offset quantity detecting apparatus
11/15/2005US6965652 Address generator for LDPC encoder and decoder and method thereof
11/15/2005US6965650 Digital modulation type signal transmission apparatus and method of displaying received signal in the signal transmission apparatus
11/15/2005US6965649 Digital subscriber line communicating system
11/15/2005US6965639 Communication apparatus and transmission technique selection method
11/15/2005US6965638 Increasing performance in modems in presence of noise
11/15/2005US6965630 Mode Controller for signal acquisition and tracking in an ultra wideband communication system
11/15/2005US6965617 Resynchronous control apparatus of subscriber communication machine, and resynchronizing method
11/15/2005CA2261141C Coherent signal processing for cdma communication system
11/15/2005CA2199709C Channel-independent equalizer device
11/10/2005WO2005107203A1 Automatic frequency control circuit and automatic frequency control method
11/10/2005WO2005107202A1 Timing reproduction circuit and reception device
11/10/2005WO2005107201A2 Single and multiple sinewave modulation and demodulation techniques, apparatus, and communications systems
11/10/2005WO2005107200A1 Device and method for optimal estimation of the transmission spectrum with the simultaneous modulation of complementary sequences
11/10/2005WO2005107121A1 Method and apparatus for generating preamble sequence for adaptive antenna system in orthogonal frequency division multiple access communication system
11/10/2005WO2005107120A1 Channel estimation apparatus and method for ofdm/ofdma receiver
11/10/2005WO2005107119A1 Radio communication system
11/10/2005WO2005107118A1 Improvements in multicarrier modulation systems
11/10/2005WO2005107117A1 Dual mode communication systems and methods
11/10/2005WO2005107111A2 Packet generation systems and methods
11/10/2005WO2005107107A2 Device and method for decoding an optical multi-level dpsk signal
11/10/2005WO2005067246A3 Quasi-parallel multichannel receivers for wideband orthogonal frequency division multiplexed communications and associated methods
11/10/2005WO2005034502A3 Approximator apparatus, and associated method for approximating an n-dimensional euclidean norm
11/10/2005WO2004095707A3 Data encoding using an oscillator circuit
11/10/2005US20050251844 Blind correlation for high precision ranging of coded OFDM signals
11/10/2005US20050250564 Adaptive antenna radio communication device
11/10/2005US20050250502 Multi-carrier communications methods and apparatus
11/10/2005US20050250469 Carrier search methods and apparatus
11/10/2005US20050250460 Apparatus and method for generating pseudo-replica signals in a CDMA communication system
11/10/2005US20050250451 Enhancing signals
11/10/2005US20050250450 Cellular communications system using baseband carrier injection and related methods
11/10/2005US20050249323 Data message sync pattern
11/10/2005US20050249320 Method and device for digital filtering of interpolated values
11/10/2005US20050249319 Apparatus and method for channel estimation in an orthogonal frequency division multiplexing cellular communication system using multiple transmit antennas
11/10/2005US20050249318 Method of evaluating a readout signal, and optical disc apparatus
11/10/2005US20050249316 Digital signal receiver
11/10/2005US20050249314 Method and circuit arrangement for deciding a symbol in the complex phase space of a quadrature modulation method
11/10/2005US20050249312 Method for generating i/q signal in a tdma transmitter and corresponding modulator
11/10/2005US20050249309 Device for processing radio transmission data with digital predistortion
11/10/2005US20050249308 T1 radio having coding gain adjustable for number of channels
11/10/2005US20050249307 Integrated burst FSK receiver
11/10/2005US20050249301 Digital broadcast transmitting and receiving system having an improved receiving performance and signal processing method thereof
11/10/2005US20050249298 Multi-code multi-carrier code division multiple access (CDMA) system and method
11/10/2005US20050249275 Timing recovery method and device for combining pre-filtering and feed-forward equalizing functions
11/10/2005US20050249271 Methods and systems for transceiving chaotic signals
11/10/2005US20050249266 Multi-subband frequency hopping communication system and method
11/10/2005US20050249245 System and method for carrying a wireless based signal over wiring
11/10/2005US20050249181 Staggered pilot transmission for channel estimation and time tracking
11/10/2005US20050249180 Communication method, transmitting device using the same, and receiving device using the same
11/10/2005US20050249177 Hybrid wireless communications system
11/10/2005US20050249174 Steering diversity for an OFDM-based multi-antenna communication system
11/10/2005US20050249168 System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system
11/10/2005US20050249127 Method for subcarrier allocation
11/10/2005US20050249111 Method and apparatus for detecting STBC-OFDM signals in time-variant channels
11/10/2005US20050249110 Peak-to-average power ratio control
11/10/2005US20050249109 Apparatus and method for improving signal-to-noise ratio in a multi-carrier CDMA communication system
11/10/2005US20050248478 Method and apparatus for DC offset removal
11/10/2005DE10348818B4 Verfahren zur Regelung eines Schutzintervalls von Datenströmen in digitalen Funkübertragungseinrichtungen und Funkempfangsgerät hierzu Method for controlling a guard interval of data streams in digital radio transmission devices and broadcast receivers this
11/10/2005DE102004019311B3 Verfahren sowie Vorrichtung zur drahtlosen Datenübertragung Method and apparatus for wireless data transmission
11/10/2005DE102004018556A1 Verfahren zur Datenkommunikation zwischen einer Basisstation und einem Transponder A method for data communication between a base station and a transponder
11/10/2005CA2564052A1 Single and multiple sinewave modulation and demodulation techniques, apparatus, and communications systems
11/09/2005EP1594275A1 Mimo wireless communication greenfield preamble formats
11/09/2005EP1594240A1 Apparatus and method for ofdm reception
11/09/2005EP1594235A1 Preamble formats for mimo wireless communications
11/09/2005EP1593247A2 Methods and apparatus for synchronization of training sequences
11/09/2005EP1593246A1 Two-dimensional channel estimation for multicarrier multiple input multiple outpout communication systems
11/09/2005EP1593245A1 Space-time-frequency diversity for multi-carrier systems
11/09/2005EP1593244A1 A device for transforming a digital signal into an acoustic one, and that makes use of a standard phase modulation
11/09/2005EP1593226A1 Differential multiple-norm transmit diversity with forward error correction and related diversity reception
11/09/2005EP1593225A1 Differential multiple-length transmit and reception diversity
11/09/2005EP1593206A1 Method of reducing feedback channel state information within adaptive ofdma system and adaptive ofdma system using the same
11/09/2005EP1527539A4 Communication using audible tones
11/09/2005EP1316240B1 A synchronised binaural hearing system
11/09/2005EP1264459B1 I/q modulator with carrier predistortion
11/09/2005EP1110360B1 Method and apparatus for reducing amplitude variations in communication signals employing inserted pilot symbols
11/09/2005EP0848870B1 Equalizer with extended channel estimation for a receiver in a digital transmission system
11/09/2005CN1695360A DWMC communication apparatus
11/09/2005CN1695335A Transmitter
11/09/2005CN1695295A Device including a circuit with adjusting means for adjusting at least one characteristic signal value of a modulated signal
11/09/2005CN1694504A Processing auxiliary data of video sequences
11/09/2005CN1694447A Multi-carrier digital signal coding modulation device and method
11/09/2005CN1694446A Synchronizing pulse generating method and method of receiving OFDM signal
11/09/2005CN1694445A Synchronizing pulse generating method and method of receiving OFDM signal
11/09/2005CN1694444A Radio communication system, radio transmitter and radio receiver
11/09/2005CN1694443A Blocking bit loading method in selective frequency blocking transmission system
11/09/2005CN1694442A Generalized multi-carrier radio transmission scheme for supporting multi-antenna transmission
11/09/2005CN1694441A Method for compatible OFDM technology by TD-SCDMA system
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