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)
09/2010
09/08/2010CN1860757B Method for regulating the transmission parameters of broadband transmission channels assembled to form a group and communication device
09/08/2010CN1762121B Testing apparatus for digital telecommunication
09/08/2010CN1604580B High speed modulation of optical subcarriers
09/08/2010CN101828370A System and method for transmitting/receiving signal in a communication system
09/08/2010CN101828369A Method and apparatus of data transmission over guard sub-carriers in multi-carrier OFDM systems
09/08/2010CN101828368A Multicarrier communication system employing explicit frequency hopping
09/08/2010CN101827065A Method for reducing transmitted signal peak-to-average power ratio in local single carrier frequency division multiple access system
09/08/2010CN101827064A Modulation device, modulation method, demodulation device, and demodulation method
09/08/2010CN101827063A Frequency multiplexing device and method of OFDMA (Orthogonal Frequency Division Multiplexing Access) system
09/08/2010CN101827062A Peak clipping compensating device with peak clipping unit threshold and transmitter
09/08/2010CN101827061A Downstream link sub-carrier allocation and peak-to-mean suppression method of orthogonal frequency division multiplexing system
09/08/2010CN101827060A Adaptive modulation-demodulation method base on fractional order Fourier transform
09/08/2010CN101827059A Digital signal transmission method and system based on multi-carrier pseudorandom sequence
09/08/2010CN101827058A Transmitter, receiver, power amplification method, and signal demodulation method
09/08/2010CN101827057A Channel estimation method and channel estimator for orthogonal frequency division multiplexing (OFDM ) communication system
09/08/2010CN101827056A Decision feedback fraction multi-bit differential detection method based on continuous phase signal
09/08/2010CN101827055A Broadband digital down converter based on FPGA (Field Programmable Gate Array)
09/08/2010CN101827052A Method and device for time synchronization and frequency synchronization of LTE system
09/08/2010CN101827051A Method and equipment for restraining interference
09/08/2010CN101827047A Frequency domain interference signal eliminating method and device
09/08/2010CN101827046A Device and method for calibrating output data of MMSE receiver
09/08/2010CN101826953A Data transmission method and data transmission apparatus
09/08/2010CN101826932A Method for identifying OFDM system code rate based on twice spectral line generation
09/08/2010CN101826930A Digital frequency shift keying communication module
09/08/2010CN101826908A Data transmission method of relay system and uplink relay subframe
09/08/2010CN101826907A Multi-access mode notification method and transmitting device for wireless link information transmission
09/08/2010CN101826899A Signal transmission method and device based on relay
09/08/2010CN101826889A Binary offset carrier signal tracking loop
09/08/2010CN101826848A Automatic gain control system in orthogonal frequency division multiplexing receiver and method
09/08/2010CN101272373B Self-adapting analog quadrature modulation disbalance compensation method and device
09/08/2010CN101262467B Realization method and realization device for digital baseband frequency spreading modulation system
09/08/2010CN101257470B Method for using insertion pilot to inhibit phase noise in orthogonal frequency division multiplexing system
09/08/2010CN101257469B Method for using system information to inhibit phase noise in orthogonal frequency division multiplexing system
09/08/2010CN101212638B On-channel audio/video signal transmission method and system
09/08/2010CN101212429B Channel estimation method and system in multi-carrier CDMA system
09/08/2010CN101207892B Method for planning component channel of OFDM system
09/08/2010CN101207595B Sending terminal apparatus and transmission method of synchronizing sequence
09/08/2010CN101202728B Method and system for communication based on OFDM
09/08/2010CN101179337B Method of forwarding simple ring structure serial port modem signal
09/08/2010CN101167248B Continuous-time equalizer, method and system for equalizing signal in transmission line
09/08/2010CN101137134B Base station and method for transmitting downlink control signalling
09/08/2010CN101136654B Method and device for eliminating narrow-band interference in communication system
09/08/2010CN101127747B A method and system for frequency domain scheduling in time division duplex multiplexing system
09/08/2010CN101127583B System and method for implementing preamble channel in wireless communication system
09/08/2010CN101106412B MC-DS-CDMA uplink receiving method and device for array antenna
09/08/2010CN101084661B Receiver with chopper stabilization
09/08/2010CN101079674B A water sound communication method of shallow sea remote horizontal channel
09/08/2010CN101056151B Multi-cast and unicast compatible orthogonal frequency division and time division multiplexing transmission, receiving machine and its method
09/08/2010CN101032076B Method for estimating signal magnitude, noise power, and signal-to-noise ratio of received signals
09/08/2010CN101018087B Downlink synchronization method and device of the mobile communication system
09/07/2010USRE41641 Synchronization symbol structure using OFDM based transmission method
09/07/2010US7793170 Method and apparatus for combining de-interleaving with FFT and demapping
09/07/2010US7792540 Synchronizing push to talk service in wireless communication system
09/07/2010US7792435 Control device with a switchable bandwidth
09/07/2010US7792228 Apparatus and method for digital down-conversion in a multi-mode wireless terminal
09/07/2010US7792223 Method and system for demodulating data signals
09/07/2010US7792220 Demodulator system and method
09/07/2010US7792219 Apparatus and method for correcting common phase error in a multi-carrier communication system
09/07/2010US7792217 Method and system for channel estimation
09/07/2010US7792216 Timing estimator in OQPSK demodulator
09/07/2010US7792215 Direct-conversion receiver and sub-harmonic frequency mixer thereof
09/07/2010US7792212 Method for setting cyclic shift considering frequency offset
09/07/2010US7792211 System, modem, receiver, transmitter and method for improving transmission performance
09/07/2010US7792210 Method for modulating UWB pulse sequences
09/07/2010US7792209 Digital DPSK demodulation method and system
09/07/2010US7792206 Closed loop feedback system for improved down link performance
09/07/2010US7792204 Apparatus and method for automatic gain control in a broadband wireless access communication system
09/07/2010US7792203 Equalization method and apparatus for time domain synchronous orthogonal frequency division multiplexing receiver
09/07/2010US7792202 Apparatus and method for estimating timing offset of OFDM symbol, and method of recovering symbol timing of OFDM symbol
09/07/2010US7792200 Peak-to-average power reduction
09/07/2010US7792198 Burst control pulse generating circuit
09/07/2010US7792182 Method and apparatus for adjusting symbol timing and/or symbol positioning of a receive burst of data within a radio receiver
09/07/2010US7792088 Method for partitioning resource space, assigning physical channel, and allocating power in OFDMA-based cellular system
09/07/2010US7791645 Imaging system and system control method
09/07/2010US7791408 Method and apparatus for automatic frequency correction
09/02/2010WO2010099002A1 Communications device with in-phase/quadrature (i/q) dc offset, gain and phase imbalance compensation and related method
09/02/2010WO2010098703A1 Method and apparatus for facilitating for crest factor reduction in a mobile radio communications system
09/02/2010WO2010098614A2 Data mapping method in multi carrier communication system and device thereof
09/02/2010WO2010098588A2 Method and apparatus for multiple input multiple output (mimo) transmit beamforming
09/02/2010WO2010098532A1 Method and apparatus for transmitting signals segmentation
09/02/2010WO2010098075A1 Transmission method, reception method, and communication method
09/02/2010WO2010097736A2 Modulating transmission timing for data communications
09/02/2010WO2010097629A1 Demodulation mixing
09/02/2010WO2010097455A1 Method for signalling the quality of a transmission channel
09/02/2010WO2010097357A1 Correction of frequency offsets greater than the nyquist frequency
09/02/2010WO2010097282A1 Power manageable optical ofdm transponder
09/02/2010WO2010097281A1 Methods, apparatuses, and computer program products for prioritizing uplink carriers
09/02/2010WO2010097121A1 Apparatus and method for single user multiple input multiple output communication employing cyclic shifts
09/02/2010WO2010097034A1 Interference suppression method and communication device
09/02/2010WO2010096967A1 Method, apparatus and system for obtaining mapping relationship between radio frequency channel and carrier frequency
09/02/2010WO2010059644A3 System and method for link for link adaptation for variable link conditions
09/02/2010WO2010021885A3 Training sequences for very high throughput wireless communication
09/02/2010US20100222092 Method And Apparatus For Transient Frequency Distortion Compensation
09/02/2010US20100220878 Fsk receiver for a hearing aid and a method for processing an fsk signal
09/02/2010US20100220821 Narrow-band interference canceller
09/02/2010US20100220820 Receiver with Mixed-Mode Automatic Gain Control
09/02/2010US20100220819 Methods and systems using fine frequency tracking loop design for wimax
09/02/2010US20100220818 Digital broadcast reception device
09/02/2010US20100220816 Power savings in hierarchically coded modulation
09/02/2010US20100220815 Method for Processing a Data Signal, Data Processing Unit and Computer Program Conduct
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