Patents for H04L 27 - Modulated-carrier systems (89,721)
02/2009
02/19/2009US20090046803 Transmitter and receiver for a wireless audio transmission system
02/19/2009US20090046801 Method and apparatus for creating a multi-user mimo codebook using a single user mimo codebook
02/19/2009US20090046800 Feedback and rate adaptation for mimo transmission in a time division duplexed (tdd) communication system
02/19/2009US20090046799 Decoder and decoding method supporting ofdm/ofdma
02/19/2009US20090046794 Multi-input multi-output communication device, antenna device and communication system
02/19/2009US20090046792 Method and system of time-of-arrival estimation for ultra wideband multi-band orthogonal frequency division multiplexing signals
02/19/2009US20090046791 Multicarrier receiving apparatus, multicarrier communication system and demodulation method
02/19/2009US20090046790 Multi-bandwidth communication system using a shared baseband processor
02/19/2009US20090046789 Systems and methods for conserving the power supply of a communications device
02/19/2009US20090046788 Techniques for Reducing Precoding Overhead in a Multiple-Input Multiple-Output Wireless Communication System
02/19/2009US20090046787 Transmitting apparatus, receiving apparatus, and wireless communication method
02/19/2009US20090046786 System and method of operating a mimo system
02/19/2009US20090046629 Signaling of Random Access Preamble Sequences in Wireless Networks
02/19/2009US20090046609 Transaction control system including portable data terminal and mobile customer service station
02/19/2009US20090046571 Method and apparatus for transmitter timing adjustment
02/19/2009CA2694730A1 Communication system using a shared baseband processor for transmission and reception over different bandwidths
02/19/2009CA2694188A1 Frequency diverse transmissions in a wireless communication system
02/19/2009CA2694185A1 Coding and multiplexing of control information in a wireless communication system
02/18/2009EP2026522A2 Method and system for polar modulation with discontinuous phase
02/18/2009EP2026521A2 Method and apparatus for transmitting and receiving different signal types in communication systems
02/18/2009EP2026520A1 Method and arrangement for transmitting an optical OFDM-signal
02/18/2009EP2026518A2 Method and apparatus for pilot muliplexing in a wireless communication system
02/18/2009EP2026487A1 Ofdm modulated wave output device and distortion compensation method
02/18/2009EP2026486A1 Transmitting apparatus, transmitting method, receiving apparatus, receiving method and transfer system
02/18/2009EP2026472A1 Method and apparatus for adaptive carrier allocation and power control in multi-carrier communication systems
02/18/2009EP2025116A2 Phase correction for ofdm and mimo transmissions
02/18/2009EP2025115A2 Methods and apparatus to perform line testing at customer premises
02/18/2009EP2025114A1 Apparatus and method for allocating resources in an orthogonal frequency division multiple access mobile communication system
02/18/2009EP2025070A2 Signal acquisition in a wireless communication system
02/18/2009EP1929691A4 Resource allocation method for mimo-ofdm of multi-user access systems
02/18/2009EP1825603B1 Apparatus and method for determining a correlation value
02/18/2009EP1579370B1 Method of automatically setting the gain of an interrogator receiver within a non-contacting identification system
02/18/2009EP1450170B1 Phase detector capable of detecting an accumulated value of phase displacement at a high speed and frequency stability measurement apparatus for arbitrary nominal frequency using the same
02/18/2009EP1401139B1 Data communication device and data communication method
02/18/2009EP0821854B1 Frequency error detector
02/18/2009CN101371557A Method for adressing and signalling using sequences with predetermined correlation properties
02/18/2009CN101371548A Method for transmitting signals in a radio communication system
02/18/2009CN101371547A Radio communication system
02/18/2009CN101371546A Method and device for estimating channel of uplink signal in wireless communication system
02/18/2009CN101371545A Pilot scrambling in communications systems
02/18/2009CN101371544A A method for reducing peak-to-average power ratio in an OFDM transmission system
02/18/2009CN101371543A A method for transmitting and receiving data using a plurality of carriers
02/18/2009CN101371542A Low-complexity method and apparatus for appending circulating expansion to continuous phase modulation signal
02/18/2009CN101371541A Pulse transmission method
02/18/2009CN101371540A Cartesian modulation system via multi-level pulse width modulation
02/18/2009CN101371486A A method of packet format dependent selection of MIMO-OFDM demodulator
02/18/2009CN101371453A Wireless communications system employing OFDMA and CDMA techniques
02/18/2009CN101370135A Robust system for transmitting and receiving map data
02/18/2009CN101370000A Multi-carrier implementing method and apparatus for TD-SCDMA system
02/18/2009CN101369999A Recursion type discrete Fourier processor single-core apparatus and use thereof
02/18/2009CN101369998A Digital despicking method and device
02/18/2009CN101369898A Meteor trail self-adapting variable-velocity burst modem
02/18/2009CN101369882A Frequency synchronization method based on pre-correction of sending terminal
02/18/2009CN101369881A Multi-carrier digital frequency-selection system and its signal processing method
02/18/2009CN101369850A Method and arrangement for transmitting an optical ofdm-signal
02/18/2009CN101369836A Wireless signal transmitting/receiving method and transmitting/receiving device
02/18/2009CN100463506C Constellation mapping and interweaving method and device in the digital TV system
02/18/2009CN100463459C WiMAX system base station receiving end timing and frequency deviation combined synchnonization method
02/18/2009CN100463458C Method for implementing frequency hopping synchronization for orthogonal frequency division multiplex
02/18/2009CN100463457C Multi-channel multiplexing cascade integrating comb filter
02/18/2009CN100463456C Method and packet radio system for controlling link adaptation
02/18/2009CN100463455C Method for estimating channel capacity of multi-input multi-output system
02/18/2009CN100463420C Method for sending channel quality information, corresponding mobile terminal and base station
02/18/2009CN100463388C Transmitting device and transmitting method
02/18/2009CN100463371C Rough frequency synchronizing method and device in orthogonal FDM system
02/17/2009US7492845 Adaptive equalization system for a signal receiver
02/17/2009US7492843 Method of synchronization for packet based, OFDM wireless systems with multiple receive chains
02/17/2009US7492842 Method for antenna diversity
02/17/2009US7492839 Efficient implementation of GSM/GPRS equalizer
02/17/2009US7492837 Parameter estimation for adaptive antenna system
02/17/2009US7492836 Wireless data communication demodulation device and demodulation method
02/17/2009US7492835 Synchrodyning apparatus
02/17/2009US7492833 Method for digital wireless communications
02/17/2009US7492832 Method and apparatus for digital vector QAM modulator
02/17/2009US7492831 Method for generating multiplier coefficients for a mixer
02/17/2009US7492830 Signal receiving method in MIMO system and device therefor
02/17/2009US7492828 Time synchronization using spectral estimation in a communication system
02/17/2009US7492811 Method and system for fast acquisition of ultra-wideband signals
02/17/2009US7492791 Ranging and round trip delay timing adjustment in a multi-point to point bidirectional communication system
02/17/2009US7492701 Apparatus and method for controlling adaptive modulation and coding in an orthogonal frequency division multiplexing communication system
02/17/2009US7492700 Method and analyzing device for analyzing an OFDM signal
02/17/2009US7492699 Method of reducing feedback channel state information within adaptive OFDMA system and adaptive OFDMA system using the same
02/17/2009US7492294 Receiving method with digital level adjustment in the analog section and incremental level change in the digital section
02/12/2009WO2009021244A2 Transmission using nested ofdma
02/12/2009WO2009020942A1 Pilot-based two-dimensional channel estimation
02/12/2009WO2009020935A2 Rate adaptive modem
02/12/2009WO2009020422A2 Multicarrier communication system employing explicit frequency hopping
02/12/2009WO2009020275A1 Demodulation device and method in transmission system
02/12/2009WO2009020266A1 System and method for digital communication having a circulant bit interleaver for equal error protection (eep) and unequal error protection (uep)
02/12/2009WO2009019139A1 Fft/ifft clock adjustment
02/12/2009WO2009018871A1 Method and arrangement for production of a frequency-modulated signal
02/12/2009WO2008156340A3 Method for receiving control information in orthogonal frequency division multiplexing system of mobile communication system
02/12/2009WO2008153479A3 Method and apparatus for controlling multi-antenna transmission in a wireless communication network
02/12/2009WO2008152304A3 Method of synchronizing a multicarrier signal, corresponding emission method, devices and computer programs
02/12/2009WO2008145337A3 A method for interference estimation for orthogonal pilot patterns
02/12/2009WO2008086204A3 Methods and apparatus for timing synchronization based on transitional pilot symbols
02/12/2009WO2007127938A3 Multi-port mixed-radix fft
02/12/2009US20090044081 Method and system for providing short block length low density parity check (ldpc) codes in support of broadband satellite applications
02/12/2009US20090043528 Testing apparatus and testing method
02/12/2009US20090042558 Transmission of ACK/NACK Bits and their Embedding in the CQI Reference Signal