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)
06/2003
06/12/2003US20030109227 EDGE modulator
06/12/2003US20030109222 Group delay precompensator for broadband radio frequency transmitter and method of operating the same
06/12/2003US20030108191 Method and system for spectrally compatible remote terminal ADSL deployment
06/12/2003US20030108131 Gain control method for a receiver of signals transmitted in bursts and receiver exploiting it
06/12/2003US20030108127 Phase estimation and compensation in Orthogonal Frequency Division Multiplex (OFDM) systems
06/12/2003US20030108126 Method and apparatus for acquiring a ranging signal of a positioning system
06/12/2003US20030108123 AM digital audio broadcasting with analog signal pre-compensation
06/12/2003US20030108122 Digital modulation system, radio communication system, radio communication device
06/12/2003US20030108121 Method for estimating the frequency shift of a cpfsk signal
06/12/2003US20030108120 Predistortion amplifier
06/12/2003US20030108118 System and method for embedding a sub-channel in a block coded data stream
06/12/2003US20030108117 Time-domain transmit and receive processing with channel eigen-mode decompositon for MIMO systems
06/12/2003US20030108112 Method for reducing the out-of -band emission in am transmitters for digital transmission
06/12/2003US20030108095 System and method for reducing noise induced by digital subscriber line (DSL) systems into services that are concurrently deployed on a communication line
06/12/2003US20030108094 Modem with enhanced echo canceler
06/12/2003US20030108092 System and method for high speed digital signaling
06/12/2003US20030108065 System and method for increasing data capacity in communication systems
06/12/2003US20030108035 System and method for improving data transmission
06/12/2003US20030107986 Method and apparatus for demodulating orthogonal frequency division multiplexed signals
06/12/2003US20030107655 Wireless camera
06/12/2003CA2467080A1 Cancellation of interference in multicarrier receivers
06/12/2003CA2465553A1 Information content distribution based on privacy and/or personal information
06/11/2003EP1318643A1 Method and device for performing adaptive predistortion
06/11/2003EP1318642A1 Cancellation of interference in mutlicarrier receivers
06/11/2003EP1318641A2 Carrier recovery with antenna diversity
06/11/2003EP1318609A2 Decoding method and communication device
06/11/2003EP1318600A2 Distortion compensating circuit for compensating distortion occurring in power amplifier
06/11/2003EP1317833A1 Apparatus and methods for sample selection and reuse of rake fingers in spread spectrum systems
06/11/2003EP1317832A1 Method and apparatus for time-sliced and multi-threaded data processing in a communication system
06/11/2003EP1317831A2 Method and orthogonal frequency division multiplexing (ofdm) receiver for reducing the influence of harmonic interferences on ofdm transmission systems
06/11/2003EP1317830A1 Method for the generation of mobile communication signals of various mobile radio standards
06/11/2003EP1317829A1 Method for coding and decoding an information symbol
06/11/2003EP1317828A2 Active terminating device with optional line-receiving and line-driving capabilities
06/11/2003EP1317813A2 Multicarrier receiver
06/11/2003EP1317812A2 Signaling method in an ofdm multiple access system
06/11/2003EP1317803A2 Method for system-independent digital evaluation of mobile communication reception signals of various mobile radio standards
06/11/2003EP0732022B1 Method and apparatus for coherent communication reception in a spread-spectrum communication system
06/11/2003CN1423901A Mapping method for digital communication system
06/11/2003CN1423884A A hierarchical QAM transmission system with varying grouping factor
06/11/2003CN1423883A Robust digital communication system
06/11/2003CN1423857A High-efficiency power modulators
06/11/2003CN1423496A Predistortion amplifying apparatus
06/11/2003CN1423438A Method and apparatus for sending/receiving of block resending in mobile communication system
06/11/2003CN1423434A Receiver for receiving OFDM signal
06/10/2003US6578173 Cyclic trellis-coded modulation
06/10/2003US6577898 Bi-directional telemetry system and method for transmitting data at high transmission rate
06/10/2003US6577690 Clock recovery in multi-carrier transmission systems
06/10/2003US6577685 Programmable digital signal processor for demodulating digital television signals
06/10/2003US6577675 Signal separation
06/10/2003US6577650 Method of setting-up and controlling synchronization within a modem
06/10/2003US6577615 Method, mobile station and base station for frequency synchronization of a mobile station in a radio communications system
06/10/2003US6577598 Methods and apparatus for channel adaptation in a DMT based system
06/05/2003WO2003047198A2 Rate selection for an ofdm system
06/05/2003WO2003047197A2 Rate selection for an ofdm system
06/05/2003WO2003047196A2 Method and device for demodulation with phase noise compensation
06/05/2003WO2003047194A1 Signal processor
06/05/2003WO2003047142A1 Radio transmission apparatus and radio transmission method
06/05/2003WO2003047141A1 Radio transmission apparatus, radio reception apparatus, and radio transmission method
06/05/2003WO2003047140A1 Orthogonal frequency-division multiplex transmission method
06/05/2003WO2003047133A1 Modulation/demodulation apparatus using matrix and anti-matrix
06/05/2003WO2003047118A2 Method and apparatus for determining the log-likelihood ratio with precoding
06/05/2003WO2003047092A2 Direct conversion of narrow-band rf signals
06/05/2003WO2003047091A2 A data processing circuit
06/05/2003WO2003047090A1 Corrective phase quadrature modulator system and method
06/05/2003WO2003047089A1 Alternate timing signal for a vestigial sideband modulator
06/05/2003WO2003047088A2 Frequency modulator using switched capacitors
06/05/2003WO2003046585A1 Phase detector capable of detecting an accumulated value of phase displacement at a high speed and frequency stability measurement apparatus for arbitrary nominal frequency using the same
06/05/2003WO2003024047A3 Reception of a plurality of phase-modulated signals
06/05/2003WO2003019794A3 Method and apparatus implementing retransmission in a communication system providing h-arq
06/05/2003WO2002084966A3 Method and apparatus for a pulse decoding communication system using multiple receivers
06/05/2003WO2002080478A3 Qpsk modulator connected to an ask modulator
06/05/2003WO2002071695A3 Wireless access using multiple modulation formats according to subscriber type
06/05/2003WO2002067441A3 Calibration of in-phase and quadrature transmit branches of a transmitter
06/05/2003WO2002063842A3 Interpolator for timing recovery circuit
06/05/2003WO2002033922A3 Method and device for the recording and processing of signal waves and corresponding method
06/05/2003US20030105997 Performance evaluation of multicarrier channels
06/05/2003US20030105784 Method for shared estimation of parameters
06/05/2003US20030105719 Information content distribution based on privacy and/or personal information
06/05/2003US20030104797 Soft decision gain compensation for receive filter attenuation
06/05/2003US20030104794 Adaptive digital predistortion method and apparatus for wireless transmitter
06/05/2003US20030104792 Distortion compensating circuit for compensating distortion occurring in power amplifier
06/05/2003US20030103588 Frequency error estimating receiver, and frequency error estimating method
06/05/2003US20030103585 Apparatus and method for symbol combining in a mobile communication system
06/05/2003US20030103584 Iterative detection and decoding for a MIMO-OFDM system
06/05/2003US20030103583 Method and apparatus for multi-level phase shift keying communications
06/05/2003US20030103578 Method and system for determining tap gain values for a transmit frequency domain equalizer to achieve unity power gain
06/05/2003US20030103559 Activation of multiple xDSL modems with implicit channel probe
06/05/2003US20030103445 Communication using simultaneous orthogonal signals
06/05/2003US20030102931 Device including a circuit with adjusting means for adjusting at least one characteristic signal value of a modulated signal
06/05/2003US20030102905 Demodulation apparatus and method in a communication system employing 16-ary QAM
06/05/2003CA2468574A1 Method and apparatus for determining the log-likelihood ratio with precoding
06/04/2003EP1317138A1 Wireless camera
06/04/2003EP1317106A2 Method and apparatus for data scrambling/descrambling
06/04/2003EP1317094A2 Boundary Detection Using Multiple Correlations in a digital communication system
06/04/2003EP1316240A1 A synchronised binaural hearing system
06/04/2003EP1316193A1 Dynamically reconfigurable universal transmitter system
06/04/2003EP1316183A2 Partial response signaling for orthogonal frequency division multiplexing
06/04/2003EP1316182A1 Improved channel equalisation for mobile radio receivers
06/04/2003EP1316144A2 Receiver circuit, especially for mobile radiotelephony
06/04/2003EP1316142A1 Phase and amplitude digital modulation circuit and method
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