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)
11/2009
11/03/2009US7613248 Signal processing with channel eigenmode decomposition and channel inversion for MIMO systems
11/03/2009US7613246 VSB transmission system
11/03/2009US7613245 Method and apparatus for multiplexing data and control information in wireless communication systems based on frequency division multiple access
11/03/2009US7613244 System for communicating channel quality information
11/03/2009US7613234 Near-end, far-end and echo cancellers in a multi-channel transceiver system
11/03/2009US7613226 Method and apparatus for transferring signals in a wireless communication system
11/03/2009US7613224 Qualification and selection of the frequency channels for an adaptive frequency hopping method by means of field strength measurement
11/03/2009US7613103 Apparatus and method for decoding turbo TCM using coset mapping
11/03/2009US7613102 Apparatus and method for clock synchronization in a multi-point OFDM/DMT digital communications system
11/03/2009US7613101 Receiving processing method and apparatus
11/03/2009US7612627 Integrated binary phase shift keying with silicon MEMS resonators
11/03/2009CA2433909C Apparatus and method for reducing papr in an ofdm mobile communication system
11/03/2009CA2395171C Method and devices for transmitting and receiving information
11/03/2009CA2300852C A method for demodulating information in a communication system that supports multiple modulation schemes
10/2009
10/29/2009WO2009132311A2 Systems and methods for doppler shift compensation in ofdma communications
10/29/2009WO2009132178A2 Backward compatible bandwidth extension
10/29/2009WO2009131352A2 Method to generate power control information and method of power control for uplink
10/29/2009WO2009131156A1 Wireless communication system, transmitter apparatus, receiver apparatus, and communication method
10/29/2009WO2009131155A1 Wireless communication system and transmitter used for the same
10/29/2009WO2009130658A2 Systems and methods for decoding dual carrier modulated signals
10/29/2009WO2009130592A1 Signaling of unused resources
10/29/2009WO2009130329A1 Apparatus, methods, and computer program products providing an indication of cyclic prefix length
10/29/2009WO2009130109A2 An apparatus
10/29/2009WO2009129846A1 Amplitude and phase modulation scheme with phase transition control, and adapted receiver
10/29/2009WO2009110744A3 Ranging structure, multiplexing method and signaling method for legacy support mode
10/29/2009WO2009110739A3 Method for encoding control information in a wireless communication system, and method and apparatus for transmitting and receiving the control information
10/29/2009WO2009109942A3 Integer carrier frequency offset estimation with low computational for an orthogonal frequency division multiplexing receiver
10/29/2009WO2004064281A9 Method for transmitting data in a communication system
10/29/2009US20090270122 Apparatus, methods, and computer program products providing an indication of cyclic prefix length
10/29/2009US20090268856 Demodulation device, demodulation device control method, demodulation device control program, and recording medium with recorded demodulation device control program
10/29/2009US20090268855 Signal receiving apparatus, signal receiving method and signal receiving program
10/29/2009US20090268854 Method and apparatus for multiple antenna communications, and related systems and computer program
10/29/2009US20090268853 Multiple input, multiple output channel, digital receiver tuner
10/29/2009US20090268852 Ofdm demodulation device
10/29/2009US20090268851 Method for Detecting Paths in Pulse Transmission and a Device for Carrying Out Said Method
10/29/2009US20090268850 Coarse Frequency Offset Estimation in ISDB Receivers
10/29/2009US20090268849 Passive Miser and Four-Phase Clocking Method and Apparatus
10/29/2009US20090268848 Systems and Methods for Filter Based Media Defect Detection
10/29/2009US20090268847 Phase locked loop modulator calibration techniques
10/29/2009US20090268846 Modified preamble for programmable transmitter
10/29/2009US20090268845 Radio transmitter incorporating digital modulator and circuitry to accommodate baseband processor with analog interface
10/29/2009US20090268844 Method and apparatus to link modulating and coding scheme to amount of resources
10/29/2009US20090268843 Systems and methods for providing unequal message protection
10/29/2009US20090268841 Power control system and method for communication system using space-time transmit diversity scheme
10/29/2009US20090268834 Method and system for predicting channel quality index (cqi) values for maximum likelihood (ml) detection in a kxk multiple input multiple output (mimo) wireless system
10/29/2009US20090268833 Method and system for predicting channel quality index (cqi) values for maximum likelihood (ml) detection in a 2x2 multiple input multiple output (mimo) wireless system
10/29/2009US20090268832 Systems and methods for high rate ofdm communications
10/29/2009US20090268831 Backward compatible bandwidth extension
10/29/2009US20090268830 System and method for detecting temporarily unused bandwidth in the rf spectrum
10/29/2009US20090268829 Systems and Methods for Sampling Frequency Offset Estimation
10/29/2009US20090268827 System for feeding back index of codeword matrix
10/29/2009US20090268826 Time Domain Based Approach for Fast Fading Channel FFT Trigger Point Tracking in ISDB Receivers
10/29/2009US20090268825 Receiver, Transmission Mehtod and Transmission System
10/29/2009US20090268806 Method of transmitting and receiving broadcasting signal and apparatus for receiving broadcasting signal
10/29/2009US20090268804 Delayed decision feedback sequence estimator
10/29/2009US20090268803 Channel Estimation for High Doppler Mobile Environments
10/29/2009US20090268801 Limiter Based Analog Demodulator
10/29/2009US20090268800 Demodulation circuit, demodulation method, program, and reception apparatus
10/29/2009US20090268799 Equalization system and method thereof
10/29/2009US20090268789 Low i/o bandwidth method and system for implementing detection and identification of scrambling codes
10/29/2009US20090268787 Method and Apparatus for Compensating for Processing Timing Misalignment in a Communication Receiver
10/29/2009US20090268786 Mobile Communication System and Wireless Apparatus to be Used for the Same
10/29/2009US20090268695 Method and System for Processing Reference Signals in OFDM Systems Using Transmission Time Interval Groupings
10/29/2009US20090268621 Transmitting apparatus, receiving apparatus and multiplex number controlling method
10/29/2009US20090268602 Method of generating code sequence and method of transmitting signal using the same
10/29/2009US20090267746 Multi-Port Receiver
10/29/2009US20090267701 Quadrature modulator and calibration method
10/29/2009DE102008019066A1 Verfahren zur atmosphärischen optischen Freiraumübertragung von digitalen Signalen und Empfänger für das Verfahren A method for atmospheric optical free-space transmission of digital signals and receiver for the process
10/29/2009CA2722448A1 Systems and methods for doppler shift compensation in ofdma communications
10/29/2009CA2722254A1 Apparatus and method for allocation of subcarriers in clustered dft-spread-ofdm
10/28/2009EP2112796A2 Method and apparatus for multiple antenna communications, and related systems and computer program
10/28/2009EP2111711A2 I/q calibration for walking-if architectures
10/28/2009EP2111694A2 Method for transmitting and receiving additional control signals
10/28/2009EP1913706B1 Timing correction for data despreading of serial offset quadrature pulse-shaped spread signals
10/28/2009EP1762020B1 Distributed resource reservation in a wireless adhoc network
10/28/2009CN101569152A QAM demodulation
10/28/2009CN101569151A OFDM transmitting and receiving systems and methods thereof
10/28/2009CN101569126A Method and arrangement for symbol mapping in communication systems utilizing ofdm-techniques
10/28/2009CN101569125A Apparatuses and methods for transmitting a transmission time interval signal with staggered reference signals
10/28/2009CN101569107A Transmitting device and receiving device in cellular system
10/28/2009CN101568167A Mobile station, synchronization detection method, sector identification method and mobile communication system
10/28/2009CN101568166A Data creation device, method, base station, mobile station and synchronization detection method
10/28/2009CN101568073A Adaptive multimedia multipath resource distribution method in a multi-carrier communication system
10/28/2009CN101567872A Method and system for I/Q branch equalization in OFDM systems.
10/28/2009CN101567871A Method and device for improving ACLR index
10/28/2009CN101567870A Detection method and device of home position, peak position and final position of channel response
10/28/2009CN101567869A Method and device for analyzing CMMB standard mobile television
10/28/2009CN101567868A Decimal frequency deviation estimation method of CMMB cellphone television
10/28/2009CN101567867A Scramble processing method and baseband signal forming method
10/28/2009CN101567865A Downlink data transmitting method
10/28/2009CN101567833A Multi-user OFDM system subcarrier distribution scheme based on business model
10/28/2009CN101567760A System for generating low density parity check codes
10/28/2009CN101567757A Communication system and method for transmitting and receiving data
10/28/2009CN101567747A Soft regulating method and soft regulating system suitable for high-speed downlink grouped access service
10/28/2009CN101567745A OFDM radio-on-fiber communication system for generating optical millimeter wave by suppressing modulation of optical carrier
10/28/2009CN101567727A Differential cyclic shift spread-spectrum underwater sound communication method
10/28/2009CN101567714A Subband decision method, base station, subscriber device and communication system for information feedback
10/28/2009CN100556195C Detection of time division duplexing system circulation prefix types and cell initial search method
10/28/2009CN100556020C Method for enhancing distinguishing signal modulation style in data rate GSM evolution system
10/28/2009CN100556019C Frequency recovery apparatus for digital multimedia broadcasting receiver
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