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)
08/2002
08/29/2002WO2002052805A3 Power cutback configuration of digital subscriber line transceivers using public switched telephone network signaling
08/29/2002WO2002033919A3 Method for generating soft bit information from gray coded signals
08/29/2002WO2002030032A3 Space-time coding with orthogonal transformations
08/29/2002WO2002023849A3 Signaling method in an ofdm multiple access system
08/29/2002WO2002017584A3 Bit swapping and dynamic rate adjustment for multicarrier transmission in a digital subscriber line system
08/29/2002WO2002009380A3 Data transmission using pulse with modulation
08/29/2002WO2002005506A3 Multiplexing of real time services and non-real time services for ofdm systems
08/29/2002WO2001098618A8 Burst qam downhole telemetry system
08/29/2002WO2000035122A9 Demultiplexer for channel interleaving
08/29/2002US20020119781 OFDMA with adaptive subcarrier-cluster configuration and selective loading
08/29/2002US20020119757 Mobile communication system and transmission mode switching method used therefor as well as recording medium having program of the same method recorded therein
08/29/2002US20020118785 Variable rate modulator
08/29/2002US20020118783 Smart antenna based spectrum multiplexing using a pilot signal
08/29/2002US20020118779 Low latency for start of initial automatic gain control for data in digital signal processing
08/29/2002US20020118774 All-digital FSK demodulation with selectable data rate and adjustable resolution
08/29/2002US20020118773 System and method providing single channel in-phase and quadrature-phase generation
08/29/2002US20020118772 Channel optimization system
08/29/2002US20020118771 Methods and arrangements in a telecommunications system
08/29/2002US20020118769 Trellis coded modulation tails
08/29/2002US20020118767 Baseband predistortion method for multicarrier transmitters
08/29/2002US20020118766 Performance evaluation of a G.dmt-compliant digital subscriber line system
08/29/2002US20020118737 Star receiver burst processing
08/29/2002US20020118736 Digital modem
08/29/2002US20020118733 Adaptive rate transmission with dual noise margins
08/29/2002US20020118732 Line driver with output impedance synthesis
08/29/2002US20020118729 Automatic power control system for a code division multiple access (CDMA) communications system
08/29/2002US20020118726 System and electronic device for providing a spread spectrum signal
08/29/2002US20020118722 Automatic power control system for a code division multiple access (CDMA) communications system
08/29/2002US20020118659 Transmission method, transmitter and receiver
08/29/2002US20020118658 Modulation/demodulation of a pilot carrier, and means to perform the modulation/demodulation
08/29/2002US20020118653 Automatic power control system for a code division multiple access (CDMA) communications system
08/29/2002US20020118652 Method of optimal power distribution for communication systems
08/29/2002US20020118635 Communication system
08/29/2002DE10108110A1 Empfänger und Verfahren zum anfänglichen Synchronisieren eines Empfängers auf die Trägerfrequenz eines gewünschten Kanals Receiver and method of initially synchronizing a receiver to the carrier frequency of a desired channel
08/29/2002DE10104775A1 Abgleichverfahren für einen Transceiver mit Zwei-Punkt-Modulation Matching method for a transceiver with two-point modulation
08/29/2002DE10104705A1 Verfahren und Telekommunikationseinrichtung zum Übertragen von Sprach- und Allgemeindaten Method and telecommunications device for transmitting voice and data General
08/29/2002CA2723046A1 Direct conversion receiver architecture
08/29/2002CA2439070A1 Estimating frequency offset
08/28/2002EP1235404A1 Wireless transmission device and transmission signal mapping method
08/28/2002EP1235403A2 Combined frequency and amplitude modulation
08/28/2002EP1235402A2 Head end receiver for digital data delivery systems using mixed mode SCDMA and TDMA multiplexing
08/28/2002EP1235401A1 Estimation of frequency offset, for use with short data bursts
08/28/2002EP1235398A1 Channel estimation in orthogonal frequency division multiplexed systems
08/28/2002EP1234441A1 Method and apparatus for transmission power level adjustment
08/28/2002EP1234423A1 Method and arrangement for synchronizing a receiver to a quadrature amplitude modulated signal
08/28/2002EP1234421A1 Reduction of par/out-of-band radiation in ofdm systems
08/28/2002EP1234420A2 Viterbi slicer for turbo codes
08/28/2002EP1108317B1 Channel allocation method and device for coded and combined information sets
08/28/2002EP0990320B1 Frequency synchronisation method for a mobile station in a mobile communications system
08/28/2002EP0746932B1 Wireless direct sequence spread spectrum digital cellular telephone system
08/28/2002EP0732020B1 Receiver having an adjustable symbol slice demodulator
08/28/2002CN1366770A System and method for improving video transmission over wireless network
08/28/2002CN1366755A Composition of sampling frequency offset and local oscillator frequency offset in OFDM receiver
08/28/2002CN1366754A 接收机 Receiver
08/28/2002CN1366753A Optimization of cannel equalizer
08/28/2002CN1366749A Multiplex communication system and method of signal process
08/28/2002CN1366742A Spread spectrum receiving apparatus
08/27/2002US6442383 Demodulator and digital wireless communication receiver
08/27/2002US6442222 Method for error compensation in an OFDM system with diversity
08/27/2002US6442219 Simultaneous decoding and phase synchronization using the criterion of maximum likelihood
08/27/2002US6442218 Demodulator
08/27/2002US6442217 Digital communication receiver with digital, IF, I-Q balancer
08/27/2002US6442216 Digital demodulator using boxcar filters and boxcar filter sections
08/27/2002US6442215 Data carrier with at least two demodulation stages having different sensitivities for modulated carrier signals with different modulation intensities
08/27/2002US6442214 Diversity transmitter based on linear transform processing of transmitted information
08/27/2002US6442211 System for digital information transmission with associated methods and devices
08/27/2002US6442192 CDMA type multiple transmission apparatus and CDMA type multiple transmission method
08/27/2002US6442189 Binary code phase offset calculation method and a binary code phase synchronization method by using the phase offset
08/27/2002US6442173 Timing recovery scheme for a discrete multitone transmission system
08/27/2002US6442130 System for interference cancellation
08/27/2002US6442129 Enhanced channel estimation
08/27/2002US6441804 Transmitter and receiver for use in a wireless cursor control system
08/27/2002US6441694 Method and apparatus for generating digitally modulated signals
08/27/2002US6441683 Device and method for recovering frequency redundant data in a network communications receiver
08/23/2002CA2368579A1 Head end receiver for digital data delivery systems using mixed mode scdma and tdma multiplexing
08/22/2002WO2002065724A1 Multiple-level modulating method, multiple-level demodulating method, and multiple-level modulating/demodulating method
08/22/2002WO2002065723A1 Multilevel modulating method, multilevel demodulating method, and multilevel modulating/demodulating method
08/22/2002WO2002065722A1 Digital modulation system, radio communication system, radio communication device
08/22/2002WO2002065721A1 Modulator and demodulator for lorenz-based chaotic signals
08/22/2002WO2002065715A1 Communication interface between an indoor unit and an outdoor unit in a wireless communication system
08/22/2002WO2002065685A1 Method for extracting a variable reference pattern
08/22/2002WO2002065662A2 Line interface a matching impedance coupled ro a feedback path
08/22/2002WO2002065657A1 System and method for improved data transmission speed by fixing the lower corner frequency at a frequency above voice band in a symmetric dsl transmission system
08/22/2002WO2002065638A1 Tunable quadrature phase shifter
08/22/2002WO2000024173A9 Apparatus and method for determining the closest coset points in a trellis decoder
08/22/2002US20020116719 Controlling service units in a communication system
08/22/2002US20020116678 Error processing method and error processing apparatus of voice code data in QPSK system
08/22/2002US20020115416 Calibration of in-phase and quadrature transmit branches of a transmitter
08/22/2002US20020115412 Method and device for channel estimation, in particular for a cellular mobile telephone
08/22/2002US20020114413 Gain controller with comparator offset compensation for circuit having in-phase and quadrature channels
08/22/2002US20020114412 Apparatus and method for filtering maximum-length-code signals in a spread spectrum communication system
08/22/2002US20020114405 Frequency searcher and frequency-locked data demodulator using a programmable rotator
08/22/2002US20020114400 Estimating timing error in samples of a discrete multitone modulated signal
08/22/2002US20020114398 Constellation-multiplexed transmitter and receiver
08/22/2002US20020114384 Modem with firmware upgrade feature
08/22/2002US20020114381 Line receiver with improved dynamic range
08/22/2002US20020114379 Adaptive modulation communication system
08/22/2002US20020114347 Initialization method for VDSL including tone space adjustment
08/22/2002US20020114270 Multiplex communication
08/22/2002US20020113718 Burst QAM downhole telemetry system
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