Patents for H04L 27 - Modulated-carrier systems (89,721)
01/2006
01/11/2006CN1719816A Resource allocating method for orthogonal frequency division multiplex system
01/11/2006CN1719815A Method for estimating and correcting frequency shift and apparatus thereof
01/11/2006CN1719761A Communication method for distributed multi-input muti-output orthogonal frequency division multiplexing communication system
01/11/2006CN1719760A Up link receiving method for array antenna MT-CDMA system
01/11/2006CN1719746A Controlling method and apparatus for transfer power amplifier
01/11/2006CN1719739A Devices for reducing the dynamic range of signals in transmitters of communication systems
01/11/2006CN1236610C QFDM transmission mode, transmitter and receiver thereof
01/11/2006CN1236590C Single carrier receiver having improved equalizing quality for equilizer and its equalizing method
01/11/2006CN1236589C Method and circuit for acquisition
01/11/2006CN1236573C Regular sign restoring device and method for orthogonal frequency-division multiplexing receiver
01/11/2006CN1236569C Bit rate detecting circuit and calculating method for optical network
01/10/2006USRE38932 Digital demodulator
01/10/2006US6986073 System and method for a family of digital subscriber line (XDSL) signal processing circuit operating with an internal clock rate that is higher than all communications ports operating with a plurality of port sampling clock rates
01/10/2006US6985749 Method and devices for transmitting and receiving information
01/10/2006US6985728 Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system
01/10/2006US6985725 Method and apparatus for maintaining independent, parallel data streams over separate modulation channels of a multi-dimensional modulator
01/10/2006US6985705 Radio frequency control for communication systems
01/10/2006US6985701 Frequency synthesizer and multi-band radio apparatus using said frequency synthesizer
01/10/2006US6985699 Efficient and optimal channel encoding and channel decoding in a multiple access communications system
01/10/2006US6985578 Low voltage broadband line driver
01/10/2006US6985543 Digital servo channel for recording apparatus
01/10/2006US6985540 AM demodulator
01/10/2006US6985539 Peak suppression method and data transmission apparatus
01/10/2006US6985538 Digital radio communication system and method
01/10/2006US6985537 Symbol self synchronous interleaving method and apparatus for OFDM-based communication system
01/10/2006US6985536 Block coding for multilevel data communication
01/10/2006US6985535 Channel condition estimation for pilot coefficient selection
01/10/2006US6985534 Channel allocation method and device for coded and combined information sets
01/10/2006US6985533 Method and apparatus for reducing peak to average power ratio in a multi-carrier modulation communication system
01/10/2006US6985532 Ultra wideband (UWB) transmitter architecture
01/10/2006US6985531 Dual domain differential encoder/decoder
01/10/2006US6985510 Method and system for data and voice transmission over shared and dedicated channels
01/10/2006US6985509 Low cost DSSS communication system
01/10/2006US6985498 Beacon signaling in a wireless system
01/10/2006US6985468 Memory circuit and coherent detection circuit
01/10/2006US6985467 Rapid acquisition spreading codes for spread-spectrum communications
01/10/2006US6985434 Adaptive time diversity and spatial diversity for OFDM
01/10/2006US6985433 Methods and apparatus for determining minimum cyclicprefix durations
01/10/2006US6985432 OFDM communication channel
01/10/2006US6985092 Robust system for transmitting and receiving map data
01/10/2006CA2393246C Joint frame, carrier and clock synchronization scheme
01/05/2006WO2006002310A2 Legacy compatible spatial multiplexing systems and methods
01/05/2006WO2006001898A1 Method and apparatus for preamble training in a multiple antenna communication system
01/05/2006WO2006001672A1 Apparatus and method for transmitting/receiving pilot signals in a communication system using an orthogonal frequency division multiplexing scheme
01/05/2006WO2006001658A1 Allocation of radio resource in orthogonal frequency division multiplexing system
01/05/2006WO2006001626A1 Display apparatus and control method thereof
01/05/2006WO2006001350A1 Sending method and device, and receiving method and device
01/05/2006WO2006000941A1 Modulation of data streams with constellation subset mapping
01/05/2006WO2006000885A1 Low current direct conversion transmitter architecture
01/05/2006WO2006000602A1 Method of obtaining spectral voids in the transmission of signals over the electric network
01/05/2006WO2005109809B1 Amc (adaptative modulation and coding) method and apparatus for increasing up-link performance and record medium storing the method
01/05/2006WO2004068714A3 Robust mode staggercasting with multiple delays for multi-resolution signals
01/05/2006US20060003712 High-quality power ramping in a communications transmitter
01/05/2006US20060002498 Clock recovery
01/05/2006US20060002497 Phase adjustment method and circuit for dll-based serial data link transceivers
01/05/2006US20060002495 Receiver device, communications device, wireless LAN device, power control method for a receiver device, power control program for a receiver device, and storage medium
01/05/2006US20060002494 Analog/digital carrier differentiation in digital cable receivers
01/05/2006US20060002493 Method and device for generating a duty cycle related output signal
01/05/2006US20060002492 DC-offset compensation
01/05/2006US20060002491 IF FSK receiver
01/05/2006US20060002490 Receiver for a wire-free communication system
01/05/2006US20060002489 Bidirectional optical communications having quick data recovery without first establishing timing and phase lock
01/05/2006US20060002488 Communication device capable of performing broadband radio communication
01/05/2006US20060002487 Methods and apparatus for parametric estimation in a multiple antenna communication system
01/05/2006US20060002486 Advanced MIMO interleaving
01/05/2006US20060002485 Systems and methods for rapid signal detection and identification
01/05/2006US20060002484 Communication system and receiving method
01/05/2006US20060002478 Coding image signal
01/05/2006US20060002462 Method and apparatus to control operation of an equalizer
01/05/2006US20060002454 System and method for scrambling the phase of the carriers in a multicarrier communications system
01/05/2006US20060002452 Pilot use in orthogonal frequency division multiplexing based spread spectrum multiple access systems
01/05/2006US20060002362 Slot-to-interlace and interlace-to-slot converters for an OFDM system
01/05/2006DE10300267B4 Demodulation eines frequenzmodulierten Empfangssignals durch Abbilden der Nulldurchgänge auf eine Folge von Parameterwerten Demodulating a frequency-modulated reception signal by mapping the zero crossings in a sequence of parameter values
01/05/2006DE10229002B4 Mittelwertnachführmechanismus in Datenkommunikationsempfängern Mittelwertnachführmechanismus in data communication receivers
01/05/2006DE102005026130A1 Verfahren und Vorrichtung zum Übertragen und/oder Empfangen von Daten Method and device for transmitting and / or receiving data
01/05/2006DE102004034382A1 Empfangsschaltung und Verfahren zum Empfangen eines OFDM-Signals Receiving circuit and method for receiving an OFDM signal
01/05/2006DE102004029932A1 Verfahren und Vorrichtung zur gleichzeitigen Kompensation von Signalfehlern in IQ-Modulatoren Method and apparatus for simultaneous compensation of signal errors in IQ modulators
01/05/2006DE102004027719A1 Verfahren zur drahtlosen Signalübertragung mit Entzerrungsmaßnahmen Method for wireless signal transmission with rectification measures
01/05/2006DE102004024906B4 Klemmschaltung für ein Empfängersystem Clamp circuit for a receiver system
01/05/2006CA2571028A1 Method of obtaining spectral voids in the transmission of signals over the electric network
01/04/2006EP1613013A1 Method and apparatus for reducing amplitude variations and interference in communication signals employing inserted pilot signals
01/04/2006EP1612993A1 Method and arrangement for changing the operation mode of an agent of a management network
01/04/2006EP1612962A1 Broadband xDSL transceiver
01/04/2006EP1612961A1 Code division multiple access communication system
01/04/2006EP1612959A2 Reduced peak-to-average amplitude multichannel link
01/04/2006EP1612951A2 System and method for simplifying analog processing in a transmitter incorporating a randomization circuit
01/04/2006EP1611767A1 A method in a transceiver for allocating transmission capacity between the two directions of transmission in wire line data communication
01/04/2006EP1611724A1 Method and apparatus for performing linearization in a quadrature transmitter
01/04/2006EP1611723A1 Position adjusted guard time interval for ofdm-communications system
01/04/2006EP1611722A1 System and method for two channel frequency offset estimation of ofdm signals
01/04/2006EP1611721A2 Method and apparatus for mitigating the effects of non-ideal receiver processing
01/04/2006EP1611706A2 Method and system for synchronization in a frequency shift keying receiver
01/04/2006EP1532747A4 Access burst detector correlator pool
01/04/2006EP1413067B1 Apparatus and method for detecting ripples caused by multipath propagation and controlling receiving antenna and tuner
01/04/2006EP1002405B1 Method and device for combined measurement of the beginning of a data block and carrier frequency shift in a multicarrier transmission system in f classes
01/04/2006CN2750580Y Remote data receiving system for fixed network
01/04/2006CN1717909A A demodulation method using soft decision for quadrature amplitude modulation and apparatus thereof
01/04/2006CN1717908A Wavelet multicarrier communication apparatus
01/04/2006CN1717891A Method and apparatus for transmitting data in a diversity communication system employing constellation rearrangement with QPSK modulation
01/04/2006CN1717889A Transmit diversity processing for a multi-antenna communication system