Patents for H04L 27 - Modulated-carrier systems (89,721)
07/2008
07/10/2008WO2008080258A1 Efficient bank of correlators for sets of gcl sequences
07/10/2008WO2008063242A3 Systems and methods for orthogonal frequency division multiple access (ofdma) communications over satellite links
07/10/2008WO2008058080A3 Methods and apparatus for signal and timing detection in wireless communication systems
07/10/2008WO2008049714A8 Robust and low-complexity combined signal power estimation for ofdm
07/10/2008WO2008045332A3 Interference cancellation system
07/10/2008WO2008037739A3 Reduction of peak-to-average-power ratio in a telecommunications system
07/10/2008WO2008003087A3 Method and apparatus for selection mechanism between ofdm-mimo and lfdm-simo
07/10/2008WO2007137281A3 Phase correction for ofdm and mimo transmissions
07/10/2008WO2007115121A3 Ofdma transmitter and method of transmitting ofdma signals using compress-decompress modulation
07/10/2008WO2005099159A3 System and method for enhancing near vertical incidence skywave (“nvis”) communication using space-time coding
07/10/2008US20080168337 Data Encoding Method and Apparatus for Flash-Type Signaling
07/10/2008US20080166126 Device and Method for Decoding an Optical Multi-Level Dpsk Signal
07/10/2008US20080165904 Symbol scaling with automatic gain control for wireless communication
07/10/2008US20080165903 Apparatus, method and computer program product for detecting non-synchronized random access channel preamble
07/10/2008US20080165902 Circuit and method for differential signaling receiver
07/10/2008US20080165901 Method and apparatus for processing signals received from a channel having a variable channel length
07/10/2008US20080165900 Demodulating A Signal Encoded According To ASK Modulation And PSK Modulation
07/10/2008US20080165899 Radio frequency receiver having dynamic bandwidth control and method of operation
07/10/2008US20080165897 Reducing Power Consumption in Signal Detection
07/10/2008US20080165894 Transmitter With Forward Error Correction Coding for Hybrid AM In-Band On-Channel Digital Audio Broadcasting Systems
07/10/2008US20080165892 Using the Preamble in an OFDM-Based Communications System to Indicate the Number of Guard Tones
07/10/2008US20080165891 Pilot design for improved channel and interference estimation
07/10/2008US20080165890 System and method for setting phase reference points in continuous phase modulation systems by providing pilot symbols at a location other than the location of the phase reference point
07/10/2008US20080165888 Flow control of frame based data over a synchronous digital network
07/10/2008US20080165887 System and method for transmitting and receiving data in a communication system
07/10/2008US20080165886 System and method for inserting pilot symbols in continuous phase modudlation systems
07/10/2008US20080165885 Data Transmission
07/10/2008US20080165877 Method and system for transmitting data streams via a beamformed MIMO channel
07/10/2008US20080165875 Multi-user MIMO-SDMA for finite rate feedback systems
07/10/2008US20080165872 Method and apparatus for transmitting and receiving shared control channel message in a wireless communication system using orthogonal frequency division multiple access
07/10/2008US20080165871 Ofdm Receiver, Integrated Circuit And Receiving Method
07/10/2008US20080165870 Method and system for a delta quantizer for mimo pre-coders with finite rate channel state information feedback
07/10/2008US20080165869 Method and system for a delta quantizer for mimo pre-coders with finite rate channel state information feedback
07/10/2008US20080165868 Method and system for codebook design of mimo pre-coders with finite rate channel state information feedback
07/10/2008US20080165867 System and method for reducing interference in an orthogonal frequency division modulation system
07/10/2008US20080165834 Method and receiving unit for the detection of data symbols
07/10/2008US20080165767 Hierarchical Data Collection Network Supporting Packetized Voice Communications Among Wireless Terminals And Telephones
07/10/2008DE102006062598A1 ASK-Demodulator mittels Differenzsignalauswertung der positiven und negativen Halbwelle ASK demodulator by means of differential signal evaluation of the positive and negative half-wave
07/10/2008DE102005044388B4 Verfahren zum Betrieb einer sendenden Station in einem Kommunikationssystem sowie sendende Station Method for operating a transmitting station in a communication system as well as transmitting station
07/09/2008EP1942690A2 Method for detecting unused frequency bands in cognitive radio network
07/09/2008EP1942624A2 Method for communication in a cellular network using OFDMA for multiple users
07/09/2008EP1942623A1 Method for data transmission using a block guard interval, subscriber and system
07/09/2008EP1942622A2 Method and apparatus for providing carrier synchronization in digital broadcast and interactive systems
07/09/2008EP1941779A2 Resource allocation for shared signaling channels
07/09/2008EP1941771A2 Shared signaling channel
07/09/2008EP1941693A1 Pilot signal transmission for an orthogonal frequency division wireless communication system
07/09/2008EP1941692A1 Sdma resource management
07/09/2008EP1941691A2 Method and apparatus for achieving flexible bandwidth using variable guard bands
07/09/2008EP1941690A2 Multi-channel equalization to compensate for impairments introduced by interleaved devices
07/09/2008EP1941689A1 System and method of frequency acquisition
07/09/2008EP1941647A1 Precoding for segment sensitive scheduling in wireless communication systems
07/09/2008EP1941645A2 Puncturing signaling channel for a wireless communication system
07/09/2008EP1941630A2 Apparatus, method and computer program product providing common channel arrangements for soft frequency reuse
07/09/2008EP1875694B1 Reduced complexity channel estimation in ofdm systems
07/09/2008EP1792462B1 Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling
07/09/2008EP1716679B1 Apparatus and method for estimating an effective channel and apparatus and method for providing pilot sequences
07/09/2008EP1613013B1 Method and apparatus for reducing amplitude variations and interference in communication signals employing inserted pilot signals
07/09/2008EP1302017B1 Method and apparatus for updating equalizer coefficients and for sampling rate control
07/09/2008EP1195034B1 Power control scheme for maximizing carrier signal-to-noise ratio in multicarrier transmitters
07/09/2008EP1166514B1 Method and receiver for receiving and decoding signals modulated with different modulation methods
07/09/2008CN101218775A Multi-user access system MIMO-OFDM resource distributing method
07/09/2008CN101218773A Signal space expansion for 16 QAM scheme
07/09/2008CN101218748A High effeciency RF transmitter system using non-linear amlifiers
07/09/2008CN101217527A A transmitting method and detecting method of additional information; base station and user device
07/09/2008CN101217526A An OFDM system carrier interference noise ratio measurement method
07/09/2008CN101217525A A downlink frame synchronization method and device in orthogonal frequency division multiplexing system
07/09/2008CN101217524A Channel decoding device and method
07/09/2008CN101217343A A smooth regulation method on type of modulation
07/09/2008CN101217340A Time-domain transmit and receive processing with channel eigen-mode decompositon for MIMO systems
07/09/2008CN101217326A A system on urban traffic information broadcasting aiming at dynamic traffic guidance
07/09/2008CN101217308A A synchronous channel transmitting method and device for time division duplex
07/09/2008CN101217288A An estimation method of virtual pilot frequency assistant channel
07/09/2008CN100401829C Downlink broadcasting by sequential transmissions from a communication station having an antenna array
07/09/2008CN100401821C Carrier search methods and related devices
07/09/2008CN100401753C Intelligent antenna control system for digital TV receiving
07/09/2008CN100401726C Head position control method, head position control device, and disk device
07/09/2008CN100401658C Signalling transmitting method and cellular system therefor
07/09/2008CN100401642C Method for simplifying analog processing in a transmitter incorporating a randomization circuit, and transmitter
07/08/2008US7398455 Method and system for decoding low density parity check (LDPC) codes
07/08/2008US7397877 Clock drift compensation method for remote communications
07/08/2008US7397873 Adaptive signal weighting system
07/08/2008US7397872 Automatic gain control circuit and method thereof and demodulation apparatus using the same
07/08/2008US7397869 Process for providing a pilot aided phase recovery of a carrier
07/08/2008US7397868 Direct conversion RF transceiver for wireless communications
07/08/2008US7397865 Systems and methods of using IQ modulation for calibration or measurement
07/08/2008US7397864 Incremental redundancy with space-time codes
07/08/2008US7397860 Fractional local peak detection and mitigation for PAR reduction
07/08/2008US7397859 Multi-carrier communication systems employing variable symbol rates and number of carriers
07/08/2008US7397839 OFDM communication system and method
07/08/2008US7397838 Base station identification in orthogonal frequency division multiplexing based spread spectrum multiple access systems
07/08/2008US7397300 FSK demodulator system and method
07/08/2008CA2407960C System and method for direct transmitter self-calibration
07/03/2008WO2008079562A1 Reducing power consumption in mobile terminals by changing modulation schemes
07/03/2008WO2008078919A2 Methods for sequence generation and transmission based on time and frequency domain transmission unit in a mobile communication system
07/03/2008WO2008078613A1 Qam demodulation
07/03/2008WO2008078312A2 Adaptive coding and modulation based on link performance prediction
07/03/2008WO2008078118A1 Ultra wideband communications systems
07/03/2008WO2008078113A1 Transmission method
07/03/2008WO2008077959A1 Method of determining a channel quality and modem
07/03/2008WO2008077950A2 Initialization of and modem for an ofdm data transmission