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)
10/2005
10/26/2005CN1689249A Beam-steering and beam-forming for wideband MIMO/MISO systems
10/26/2005CN1688146A Adaptive equalizing and carrier recovering method suitable for high-order QAM and circuit thereof
10/26/2005CN1225091C Base band circuit of receiver and low frequency cut-off frequency controlling method
10/26/2005CN1225088C Method and apparatus for reducing oscillator noise by noise-feedforward
10/25/2005US6959175 Receiver capable of receiving radio signals in a preferred state at all times
10/25/2005US6959174 Amplifying device
10/25/2005US6959054 Filter bank and receiver for processing continuous phase modulated signals
10/25/2005US6959052 Receiving apparatus, receiving method, program and information recording medium
10/25/2005US6959051 Clock regenerator for use in demodulating digital modulated signals
10/25/2005US6959050 Method and apparatus for synchronizing an OFDM signal
10/25/2005US6959036 Method and apparatus for an X-DSL modem supporting multiple X-DSL line codes
10/25/2005US6958782 Frequency converter
10/25/2005US6958781 Mapping arrangement for digital communication system
10/25/2005CA2315489C Radio communication apparatus and radio communication method
10/22/2005CA2499598A1 Quadrature amplitude modulation of optical carriers
10/20/2005WO2005099211A1 Ofdm system with per subcarrier phase rotation
10/20/2005WO2005099210A1 Apparatus, systems, and methods for the reception of a plurality of asynchronous data streams
10/20/2005WO2005099209A2 Dual carrier modulator for a multiband ofdm transceiver
10/20/2005WO2005099208A1 Transmission signal producing apparatus
10/20/2005WO2005099207A1 Network system
10/20/2005WO2005099206A1 Cross-encoding of information in independent channels
10/20/2005WO2005099205A1 Method and apparatus for robust automatic frequency control in cdma systems with constant pilot signals
10/20/2005WO2005099203A1 Methods and apparatus for generating and processing wideband signals having reduced discrete power spectral density components
10/20/2005WO2005099160A2 Systems and methods for implementing path diversity in a wireless communication network
10/20/2005WO2005099155A1 I/q mimo detection for single antenna interference cancellation
10/20/2005WO2005099147A2 Dynamic zero suffix addition
10/20/2005WO2005099146A1 Transmitter and receiver for fast frequency hopping in an orthogonal frequency division multiplexing system
10/20/2005WO2005099145A1 Transmitter and receiver for fast frequency hopping based on a cyclic frequency hopping pattern in an orthogonal frequency division multiplexing system
10/20/2005WO2005099131A2 Systems and methods for transmitting data in a wireless communication network
10/20/2005WO2005099116A1 Wideband multicarrier transmission
10/20/2005WO2005099114A1 Low interference uwb wireless communication system and processing method thereof and storage medium recorded program of the same
10/20/2005WO2005099093A1 Frequency shift compensation, such as for use in a wireless meter reading environment
10/20/2005WO2005099083A1 Oscillation circuit and electronic device
10/20/2005WO2004095723A3 Secure nonlinear keting modulation and demodulation
10/20/2005US20050233752 Multi-carrier communications methods and apparatus
10/20/2005US20050233746 Methods and apparatus for selecting between multiple carriers based on signal energy measurements
10/20/2005US20050233709 Modified preamble structure for IEEE 802.11a extensions to allow for coexistence and interoperability between 802.11a devices and higher data rate, MIMO or otherwise extended devices
10/20/2005US20050233705 Method and system to improve handover between mobile video networks and cells
10/20/2005US20050232383 Timing recovery of PAM signals using baud rate interpolation
10/20/2005US20050232379 Apparatus and method for channel estimation
10/20/2005US20050232378 Apparatus and method for echo indicator generation
10/20/2005US20050232376 System/method for receiving ASK and FSK signals using a single RF receiver
10/20/2005US20050232375 Apparatus and method for automatic performance control in a digital radio
10/20/2005US20050232374 Generating higher order modulation using QPSK modulations
10/20/2005US20050232373 Power reduction
10/20/2005US20050232372 Method and system for a reduced emissions direct drive transmitter for unshielded twisted pair (UTP) applications
10/20/2005US20050232371 Method and apparatus for data transfer using wideband bursts
10/20/2005US20050232370 Long training sequence for MIMO WLAN systems
10/20/2005US20050232369 Method and apparatus for wireless data transmission
10/20/2005US20050232368 Single and multiple sinewave modulation and demodulation techniques, apparatus, and communications systems
10/20/2005US20050232342 Additional hierarchical preamble for support of FDMA channel in a multi-band OFDM system
10/20/2005US20050232338 Method and apparatus for detecting and processing GPS signals
10/20/2005US20050232308 Frame alignment and cyclic extension partitioning
10/20/2005US20050232300 Method and apparatus for adaptive hybrid termination in a multi-carrier communication system
10/20/2005US20050232217 Guard section length detecting device and method for orthogonal frequency division multiplexing system receiver
10/20/2005US20050232216 Dual mode communication systems and methods
10/20/2005US20050232215 Information transmission method, mobile communications system, base station and mobile station in which data size of identification data is reduced
10/20/2005US20050232182 Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter
10/20/2005US20050232172 Technique for dynamic bin allocation
10/20/2005US20050232171 Digital subscriber line transmission method, apparatus and system
10/20/2005US20050232156 Channel state information feedback method for multi-carrier communication system
10/20/2005US20050232139 Dual length block codes for multi-band OFDM
10/20/2005US20050232137 Versatile system for dual carrier transformation in orthogonal frequency division multiplexing
10/20/2005US20050232135 Radio communication system, terminal apparatus and base station apparatus
10/20/2005US20050232134 Frequency division multiplexing system with selectable rate
10/20/2005US20050232133 Method of receiving and processing a multi-carrier signal and multi-carrier reception device employing the method
10/20/2005US20050231329 Method for data communication between a base station and a transponder
10/20/2005DE10393029T5 Abschätzung der Trägerfrequenzverschiebung in einem drahtlosen Kommunikationssystem Estimating carrier frequency offset in a wireless communication system
10/19/2005EP1587269A2 Communication apparatus
10/19/2005EP1587268A1 Apparatus and method for controlling transmission power in communication systems using orthogonal frequency division multiple access scheme
10/19/2005EP1587267A1 Configuring a mimo communication
10/19/2005EP1587266A2 Long training sequence for MIMO WLAN systems
10/19/2005EP1586183A1 Oscillator device for frequency modulation
10/19/2005EP1446928B1 Adaptive pre-distortion of an amplitude- and frequency- or phase-modulated radio frequency signal generator
10/19/2005EP1419594A4 Method and apparatus implementing retransmission in a communication system providing h-arq
10/19/2005EP1393516B1 Frequency searcher and frequency-locked data demodulator using a programmable rotator
10/19/2005EP1232623B1 A hierarchical qam transmission system with varying grouping factor
10/19/2005EP1192794A4 Method and apparatus for combining voice line card and xdsl line card functions
10/19/2005EP1156593B1 Code division multiple access (CDMA) communication system
10/19/2005EP1119919B1 Method for selecting modulation detector in receiver, and receiver
10/19/2005CN1685682A Apparatus and method for generating a preamble sequence in an OFDM communication system
10/19/2005CN1685681A Channel mapping for OFDM frequency-hopping
10/19/2005CN1685680A Apparatus and methods for suppression of interference
10/19/2005CN1685647A Beacon signaling in a wireless system
10/19/2005CN1685624A Variable-length correlator for spread-spectrum communications
10/19/2005CN1684457A Channel state information feedback method for multi-carrier communication system
10/19/2005CN1684456A Synchronous detector and method therefor
10/19/2005CN1684455A System and method for spreading on fading channels
10/19/2005CN1684454A Apparatus and method for echo indicator generation
10/19/2005CN1684449A Channele responding measuring method and channel responding measurer
10/19/2005CN1684396A Radio transmission system, radio relay system and communication device
10/19/2005CN1684091A Method and apparatus for wireless data transmission
10/19/2005CN1224229C 64-bit QAM demodulating apparatus and method for calculating soft decision value
10/19/2005CN1224228C Multi-carrier transmission system using multiplication by leakage matrix with complex reduction
10/19/2005CN1224226C Method and apparatus for rearranging codeword sequence in a communication system
10/19/2005CN1224208C Mixed automatically repeating inquiry facsimile method with reduced cache size and receiver
10/19/2005CN1224186C Orthogonal frequency-division multiplying equalizer for actuating adaptive balance according to channel state
10/19/2005CN1224178C Anti noise and burst mode receiving equipment and method for recovering clock signal and its data
10/19/2005CN1224170C Method and an arrangement relating to telecommunications systems
10/18/2005US6957241 FFT and FHT engine
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