Patents for H04L 27 - Modulated-carrier systems (89,721)
12/2010
12/08/2010CN101911623A Modular powerline adapters and methods of use
12/08/2010CN101911569A Techniques for maintaining quality of service for connections in wireless communication systems
12/08/2010CN101911563A A method of data modulation adapted to selected modulation rotational angle
12/08/2010CN101911558A Method and apparatus for providing channel quality feedback in an orthogonal frequency division multiplexing communication system
12/08/2010CN101911555A Mobile communication system, base station device, user device and method
12/08/2010CN101911525A Open loop precoder cycling in mimo communications
12/08/2010CN101911513A Electronic tuner and high frequency receiving device using the same
12/08/2010CN101911488A Signal modulation circuit
12/08/2010CN101909040A Communication device
12/08/2010CN101909039A Phase modulator-based optical MSK modulation method and device
12/08/2010CN101909038A Method and device for estimating blind signal bandwidth
12/08/2010CN101909037A Methods and apparatus related to using a wireless terminal scrambling identifier
12/08/2010CN101909036A Improved cross-correlation timing synchronization method of orthogonal frequency division multiplexing
12/08/2010CN101909035A Method for recognizing subcarrier modulation modes of orthogonal frequency division multiplexing signal in wireless communication
12/08/2010CN101909034A Passive optical network transmitting and receiving method and system based on single carrier frequency division multiple access
12/08/2010CN101909033A Receiver and method
12/08/2010CN101909032A Signal receiving apparatus, method, program and system
12/08/2010CN101909031A MMSE detection method for spread-spectrum OFDMA communication system
12/08/2010CN101909030A Dual-function optical differential phase shift keying format demodulator
12/08/2010CN101909029A Method and system for controlling bias points of DQPSK (Differential Quadrature Reference Phase Shift Keying) modulator
12/08/2010CN101909028A Single carrier demodulation method and system, transmitter and receiver
12/08/2010CN101909027A Generation method of ultra-wideband dual carrier frequency and frequency synthesizer thereof
12/08/2010CN101909024A Method and device for estimating maximum Doppler frequency offset
12/08/2010CN101908950A Method and device for sending downlink and uplink control signals through multi-antenna system
12/08/2010CN101908949A Wireless communication system as well as base station, relay station, user terminal and data sending and receiving methods thereof
12/08/2010CN101908947A Concatenated coding and decoding method based on LDPC codes and constellation rotation quasi-orthogonal space-time codes and signal emitting and receiving method thereof
12/08/2010CN101908937A Signal detecting method in downlink distribution type MIMO-OFDM (Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing) system
12/08/2010CN101908935A System for estimating signal-to-noise ratio of signal in multiple carrier system
12/08/2010CN101521943B Method for allocating time frequency resource of public pilot channels
12/08/2010CN101383795B Method for enhancing valid data transmission efficiency by OFDM transmitter and OFDM transmitter
12/08/2010CN101335898B Deplexing apparatus and method for mobile multimedia broadcast terminal
12/08/2010CN101227249B Cascade emission method of channel coding and space time coding
12/08/2010CN101217343B A smooth regulation method on type of modulation
12/08/2010CN101212288B Uplink multiple-user space division multiplexing method in OFDMA system
12/08/2010CN101202564B Channel initialization method
12/08/2010CN101155165B Method for reducing initialized radius of spherical decoding
12/08/2010CN101136898B Quadrature amplitude modulated soft decision method and apparatus
12/08/2010CN101087288B Cyclic prefix identification method and eNodeB in long evolving system
12/08/2010CN101064542B MIMO OFDML aunching aerial selection and self-adapting modulation approach of system
12/08/2010CN101060512B OFDM transmission symbol synchronizing method and its system
12/08/2010CN101060508B Data slicer circuit, demodulation stage, receiving system and method for demodulating shift keying coded signals
12/08/2010CN101043491B Part transmission sequence process and its apparatus
12/08/2010CN101022440B Compatiable DAB ground mobile multimedia broadcast receiving and transmitting method and system
12/07/2010US7849389 LDPC (low density parity check) coded modulation symbol decoding
12/07/2010US7848722 Wireless transmission apparatus and modulation scheme selection method
12/07/2010US7848466 Viterbi slicer for turbo codes
12/07/2010US7848465 Joint decoding of ISI (inter-symbol interference) channel and modulation codes
12/07/2010US7848464 Method and apparatus for receiving data in a communication system
12/07/2010US7848463 Adaptive time-filtering for channel estimation in OFDM system
12/07/2010US7848462 Digital broadcasting transmission/reception system having improved receiving performance and signal processing method thereof
12/07/2010US7848461 Apparatus and method for signal reception in multiple input multiple output (MIMO) communication system
12/07/2010US7848460 Interference suppression method and apparatus
12/07/2010US7848459 Radio receiving apparatus and radio receiving method
12/07/2010US7848457 Constant delay zero standby differential logic receiver and method
12/07/2010US7848454 Communication apparatus and communication method
12/07/2010US7848453 Independent LO IQ tuning for improved image rejection
12/07/2010US7848452 Distortion compensating apparatus
12/07/2010US7848449 Offset compensation device
12/07/2010US7848448 Method of generating reference signal in wireless communication system
12/07/2010US7848447 Radio parameter group generating apparatus, transmitter and receiver
12/07/2010US7848443 Data communication with embedded pilot information for timely channel estimation
12/07/2010US7848438 Method and apparatus for pilot signal transmission
12/07/2010US7848403 Enhanced reconditioning equalizer filter chain for multi-carrier signals
12/07/2010US7848386 Frequency hopping RF transceiver with programmable antenna and methods for use therewith
12/07/2010US7848316 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
12/07/2010US7848281 Method for selection of an available transmission channel by sending a negative decision value and an additional positive decision value and corresponding base station, mobile terminal and mobile radio network
12/07/2010CA2599598C Filter for impulse response shortening, with addition spectral constraints, for multicarrier transmission
12/07/2010CA2562679C Methods and apparatus for selecting between multiple carriers based on signal energy measurements
12/07/2010CA2542153C System and method for reducing peak-to-average power ratio for multi-carrier communication systems
12/02/2010WO2010138590A2 Method and apparatus for position signal assisted window placement
12/02/2010WO2010138206A1 Method and apparatus for iterative timing and carrier phase recovery
12/02/2010WO2010138205A1 Improved feed-forward carrier recovery system and method
12/02/2010WO2010138201A2 Improved sync detection and frequency recovery for satellite systems
12/02/2010WO2010138199A2 Method and apparatus for symbol timing recovery
12/02/2010WO2010138198A1 Fast cycle slip detection and correction
12/02/2010WO2010138140A1 Point-to-point communications system particularly for use in a power distribution system
12/02/2010WO2010138032A1 Papr reduction by tone selection
12/02/2010WO2010137914A2 Method and apparatus for transmitting an uplink control channel in a wireless communication system
12/02/2010WO2010136864A1 Apparatus and method for inserting a cyclic postfix for a time-rotated symbol in a communication system
12/02/2010WO2010136680A1 Transmitter for multi-format data
12/02/2010WO2010136516A1 Multicarrier modulation of optical channels at reduced optical power
12/02/2010WO2010135946A1 Method and apparatus for realizing decimal frequency offset estimation
12/02/2010WO2010135913A1 Method and device for integrating unicast service and multimedia broadcast multicast service
12/02/2010WO2010116910A3 Cooperative ultra-reliable wireless communications
12/02/2010WO2010098588A3 Method and apparatus for multiple input multiple output (mimo) transmit beamforming
12/02/2010WO2010081896A3 Interpolated channel estimation for mobile ofdm systems
12/02/2010WO2010004388A3 Transmitter and method for transmitting soft pilot symbols in a digital communication system
12/02/2010WO2009120028A3 Wireless multi-carrier code division multiplexing communication apparatus using transmit diversity scheme
12/02/2010US20100304744 Method and apparatus for performing searches with multiple receive diversity (rxd) search modes
12/02/2010US20100304708 Methods and Apparatus for Accurately Determining Signal Time of Arrival
12/02/2010US20100303473 Receiver and Method for Operating Said Receiver
12/02/2010US20100303180 Gain control for a receiver in a multi-carrier communication system
12/02/2010US20100303179 Synchronization timing detecting apparatus, receiving apparatus, and synchronization timing detecting method
12/02/2010US20100303178 Method and System for Down-Converting an Electromagnetic Signal, and Transforms for Same
12/02/2010US20100303177 Doppler frequency estimation system and method
12/02/2010US20100303176 Methods and apparatuses for mimo detection
12/02/2010US20100303175 Method to discriminate a real echo peak from an aliased echo peak
12/02/2010US20100303174 Apparatus for processing received signal, method thereof, and method for selecting mapping rule
12/02/2010US20100303173 Circuit for demodulating a phase modulated signal
12/02/2010US20100303172 Methods and techniques for 3g cellular transmitters