Patents for H04L 27 - Modulated-carrier systems (89,721)
04/2008
04/17/2008US20080089391 Method and apparatus for compensating dc offsets in communication systems
04/17/2008US20080089365 Robust digital communication system
04/17/2008US20080089282 Acquisition in frequency division multiple access systems
04/17/2008US20080089221 Method For Realizing Link Adaptation In Mimo-Ofdm Transmission System
04/17/2008US20080088750 Display Device with Speaker Grill
04/17/2008DE102006047978A1 Verfahren zum Betrieb eines Funkkommunikationssystems, das OFDM verwendet, sowie Funkkommunikationssystem, sendende Station und empfangende Station A method of operating a radio communication system that uses OFDM, and the radio communication system, transmitting station and receiving station
04/17/2008CA2663258A1 Uplink pilot multiplexing in su-mimo and sdma for sc-fdma systems
04/16/2008EP1912399A1 Method and related circuit of guard interval length detection for OFDM signals
04/16/2008EP1912398A1 Phase control device, and pulse pattern generator and error detector using the phase control device
04/16/2008EP1912397A1 Signal transmitting apparatus and signal transmitting method
04/16/2008EP1912389A1 Method and apparatus for implementing clear channel assessment function In multi-Band OFDM system
04/16/2008EP1912375A2 Method and system for variable state length initialization for DSL systems
04/16/2008EP1912374A1 Data transmission in a multiuser OFDM system with adaptive modulation
04/16/2008EP1912344A1 Radio transmitting apparatus, radio receiving apparatus, and data placing method
04/16/2008EP1911237A2 Method, apparatus and computer program product providing widely linear interference cancellation for multi-carrier systems
04/16/2008EP1911236A2 Base station methods and apparatus for dc tone special treatment
04/16/2008EP1911235A1 Method and synchronizer for fine ofdm symbol synchronization and method/receiver for the reception of ofdm symbols
04/16/2008EP1911234A2 Method and apparatus for data signal processing in wireless rfid systems
04/16/2008EP1911233A1 Method and apparatus in a wireless terminal for measuring and compensation dc noise on the dc tone of a multi-carrier communication
04/16/2008EP1911187A2 Apparatus, and associated method, for allocating data for communication upon communication chanels in a multiple input communication system
04/16/2008EP1535439B1 Noise-balanced qam detection
04/16/2008EP1236284B1 Signal level adjustment arrangement
04/16/2008EP1054537B1 Hierarchical transmission digital demodulator
04/16/2008CN101164310A Polar transmitter with digital to RF converter
04/16/2008CN101164309A Fft collection window positioning using ufdm code time tracking information
04/16/2008CN101164308A Timing corrections in a multi carrier system and propagation to a channel estimation time filter
04/16/2008CN101164270A Communication system modulating/demodulating data using antenna patterns and associated methods
04/16/2008CN101164243A Hybrid orthogonal frequency division multiple access system and method
04/16/2008CN101164064A Partial fft processing and demodulation for a system with multiple subcarriers
04/16/2008CN101163329A Method of implementing SCDMA system terminal-to-terminal direct communication and uses thereof
04/16/2008CN101163127A Modulation circuit having DC offset level control circuit
04/16/2008CN101163126A Method of implementing QPSK modulation using 16QAM modulation
04/16/2008CN101163125A CPFSK signal modulation device
04/16/2008CN101163124A Method of implementing multi-input multi-output orthogonal frequency division multiplexing system time synchronization
04/16/2008CN101163123A Method and device for generating preposition frame
04/16/2008CN101163122A Method of transmitting TDD system control information
04/16/2008CN101163121A Communication system and character code selecting method thereof
04/16/2008CN101162987A Method of transmitting uplink special time slot of TDD system
04/16/2008CN101162980A Modulation information mapping method and system
04/16/2008CN101162948A Method and receiver to increase the spectral efficiency of dpsk modulation format
04/16/2008CN101162939A Gain factor processing method and equipment
04/16/2008CN101162929A Method and apparatus for implementing clear channel assessment function in multi-band OFDM system
04/16/2008CN101162924A Peak clipping device for implementing self-adaptive control peak window width
04/16/2008CN101162920A Decision feedback equalizer and implementing method thereof
04/16/2008CN100382587C Digital broadcast demodulator
04/16/2008CN100382539C Method for subcarrier allocation and for modulation scheme selection in a wireless multicarrier transmission system
04/16/2008CN100382472C Method and apparatus for encoding short block length low density parity check (LDPC) codes
04/15/2008USRE40242 Communication system
04/15/2008US7359812 Automation device
04/15/2008US7359472 Method and apparatus for wireless data transmission
04/15/2008US7359467 Method and apparatus for increasing the quality of the receiver synchronization of QAM or CAP modulated modem connection
04/15/2008US7359464 Trellis decoder and method of decoding
04/15/2008US7359463 Code sensing method and apparatus
04/15/2008US7359462 Channel search device
04/15/2008US7359461 Apparatus and method for recovering clock signal from burst mode signal
04/15/2008US7359460 Coherent and non-coherent data path splitting in receivers for improved synchronization
04/15/2008US7359459 System and method for low power clear channel assessment
04/15/2008US7359457 Transmission apparatus, reception apparatus and digital radio communication method
04/15/2008US7359456 Communication system and communication device
04/15/2008US7359454 Apparatus and method for digital wireless communications
04/15/2008US7359452 Systems and methods for designing a high-precision narrowband digital filter for use in a communications system with high spectral efficiency
04/15/2008US7359451 System and method for wirelessly transmitting and receiving digital tokens for use in electronic gameplay
04/15/2008US7359449 Data communication for wired and wireless communication
04/15/2008US7359448 Remote transmitter system and method
04/15/2008US7359445 System, method and computer program product for demodulating quadrature amplitude modulated signals based upon a speed of a receiver
04/15/2008US7359444 Method and apparatus for extending the frequency range of multi-tone modems
04/15/2008US7359443 Method for compensating for peak values during a data transmission with discrete multitone symbols and a circuit arrangement for carrying out the method
04/15/2008US7359442 Block oriented digital communication system and method
04/15/2008US7359434 Programmable PHY for broadband wireless access systems
04/15/2008US7359432 Speed negotiation for serial transceivers
04/15/2008US7359429 Support of the determination of a correlation
04/15/2008US7359366 Uplink ranging system and method in OFDMA system
04/15/2008US7359314 Signal transmission system for transmitting a signal with a guard interval and a demodulation method thereof
04/15/2008US7359312 Method and apparatus for identifying an orthogonal frequency division multiplexing (OFDM) terrestrial repeater using inactive sub-carriers
04/15/2008US7358828 Orthogonal modulation device, method, program, recording medium, and modulation device
04/15/2008CA2517483C Fixed ofdm wireless man utilizing cpe having internal antenna
04/10/2008WO2008043088A1 Intersymbol interference mitigation
04/10/2008WO2008042221A2 Low power and low complexity adaptive self-linearization
04/10/2008WO2008042189A1 Method for peak-to-average power ratio reduction in telecommunication systems
04/10/2008WO2008041824A2 Methods for retransmitting data in the multi-carrier system
04/10/2008WO2008041822A2 Methods for retransmitting in the multi-carrier system
04/10/2008WO2008041819A2 Methods for transmitting downlink control signal
04/10/2008WO2008041080A2 Scrambled cazac sequences for sc-fdma
04/10/2008WO2008040913A1 Method and device for digital precorrection of a multichannel signal
04/10/2008WO2008040257A1 Method, device and system for end to end tracking
04/10/2008WO2008040204A1 A mapping method of the channel resource block and a terminal equipment thereof
04/10/2008WO2008020064A3 Radio communication system network device and method for transmission of data in a radio communication system
04/10/2008WO2008017054A3 Receivers based on closed-form parametric estimates of the probability density function for the received signal
04/10/2008WO2007116280A3 Delaying retransmission requests in multi-carrier systems
04/10/2008WO2007108921A3 Communications system with baseband pilot injected carrier (bpic) modulation/demodulation and frame recovery and related methods
04/10/2008WO2007102896A3 Frequency division multiple access schemes for wireless communication
04/10/2008WO2007063380A3 Combined receiver for dvb-h and dvb-t transmissions
04/10/2008WO2007035044A3 Method and appratus for multiplexing multiple reverse feedback channels in multicarrier wireless networks
04/10/2008WO2006099526A3 Fast fourier transform twiddle multiplication
04/10/2008US20080086670 Channel Estimation and Fixed Thresholds for Multi-Threshold Decoding of Low-Density Parity Check Codes
04/10/2008US20080085683 Method And Apparatus For Transient Frequency Distortion Compensation
04/10/2008US20080084948 Wireless communication apparatus
04/10/2008US20080084947 Method for receiving data by a universal asynchronous receiver transmitter
04/10/2008US20080084943 Apparatus and method for estimating channels in mobile communication system by using hidden pilots
04/10/2008US20080084942 Method and apparatus for advanced adaptive two dimensional channel interpolation in orthogonal frequency division multiplexing (ofdm) wireless communication systems