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)
10/2007
10/11/2007US20070237257 Wireless local area network apparatus
10/11/2007US20070237256 Transmitter and method of transmitting a signal
10/11/2007US20070237255 System and method for efficient rectangular to polar signal conversion using cordic algorithm
10/11/2007US20070237250 Hybrid modulus blind equalization for quadrature amplitude modulation (qam) receivers
10/11/2007US20070237245 Phase correlator for wireless receiver and method for correlating using phase-quantized signals
10/11/2007US20070237218 Apparatus and method for ultra narrow band communications
10/11/2007US20070237217 User scheduling methods and apparatus for high-speed uplink packet access systems
10/11/2007US20070237211 Chip blanking and processing in scdma to mitigate impulse and burst noise and/or distortion
10/11/2007US20070237182 Contention-based access in multipoint-to-point communication using orthogonal frequency division multiplexing
10/11/2007US20070237181 Method and System for Generating Switching Timing Signal for Separating Transmitting and Receiving Signal in Optical Repeater of Mobile Telecommunication Network Using Tdd and Ofdm Modulation
10/11/2007US20070237070 Methods for contention-based bandwidth requests in orthogonal frequency division multiplexing systems
10/11/2007US20070237067 Apparatus and method for improved performance in MC-CDMA radio telecommunication systems that use pulse-shaping filters
10/11/2007US20070237066 Systems for contention-based bandwidth requests in orthogonal frequency division multiplexing systems
10/11/2007DE19821290B4 Demodulator für ein frequenzmoduliertes Signal A demodulator for a frequency-modulated signal
10/11/2007DE19820435B4 Signalsende- und Empfangsvorrichtung für das Leiterbahnsystem in einem Bauteil mit mehreren Logikwerten Signal transmitting and receiving apparatus for the conductor system in one component with a plurality of logic values
10/11/2007DE102004018555B4 Verfahren zur Datenkommunikation zwischen einer Basisstation und einem Transponder, Basisstation zur Datenkommunikation sowie Datenkommunikationssystem A method for data communication between a base station and a transponder, the base station for data communication and data communication system
10/11/2007CA2648374A1 Procedure for simultaneous transmission in time and frequency of multiple communications of data by means of ofdm modulations
10/11/2007CA2644491A1 Advanced-vsb system (a-vsb)
10/11/2007CA2631575A1 Methods and apparatus for noise estimation in a communication system
10/10/2007EP1843536A1 A method of reducing a peak to average power ratio of a modulated signal
10/10/2007EP1843535A1 Msk signal code restoring device and msk signal code restoring program
10/10/2007EP1843534A2 Apparatus and method for generating log likelihood ratio in a multiple-input multiple-output communication system
10/10/2007EP1843506A2 Apparatus and method for digital wireless communications
10/10/2007EP1843499A1 Communication apparatus
10/10/2007EP1843498A1 Wireless communication apparatus
10/10/2007EP1842349A2 Communication system overlap-and-add operation
10/10/2007EP1842341A1 Transmitting information using multiple carriers
10/10/2007EP1787444B1 Synchronisation circuit for synchronising time with a received radio controlled clock signal and a corresponding clock
10/10/2007EP1690349B1 Method and apparatus for producing rz-dpsk modulated optical signals
10/10/2007EP1639775B1 Faster fine timing operation in multi-carrier system
10/10/2007EP1446902A4 Method and apparatus for transient suppression in an integrated pots/dsl line card
10/10/2007EP1382170B1 Method for reducing signaling overhead in a multicarrier system with dynamic bit allocation and corresponding transmitter/receiver device
10/10/2007EP1382146A4 Data communication apparatus and method based on orthogonal frequency division multiple access
10/10/2007EP1332595B8 Wireless communication device with ask and qpsk modulators
10/10/2007EP1062783B1 Off-line broadband network interface
10/10/2007CN200959611Y Carrier-frequency generation and standard time synchronizer
10/10/2007CN101053230A Apparatus and method of space time frequency block code
10/10/2007CN101053229A Apparatus and method for transmitting and receiving data using space-time block coding
10/10/2007CN101053228A Method and device for demodulating galileo alternate binary offset carrier (altboc) signals
10/10/2007CN101053195A Method and transmitter structure removing phase ambiguity by repetition rearrangement
10/10/2007CN101053192A Method and system for determining a frequency offset
10/10/2007CN101053172A Multiple-input multiple output system and method
10/10/2007CN101052196A Base station of orthogonal frequency division multiplex system and dispath method for it small area carrier resource
10/10/2007CN101052170A Fan zoning base station
10/10/2007CN101052149A Data transmission method
10/10/2007CN101052146A Control information transmission method and device in third generation mobile communication long-term evolution system
10/10/2007CN101052028A Demodulating method and device
10/10/2007CN101052027A Differential west space-time modulation constellation mapping method in multiple antenna orthogonal frequency division multiplexing
10/10/2007CN101051985A Method for realizing virtual special net access
10/10/2007CN101051961A Loopback control method and device
10/10/2007CN101051931A System and method for realizing business protection using LCAS protocol
10/10/2007CN101051882A Empty time coding method for UMB pulse type multi-antenna system
10/10/2007CN101051878A Method and device for realizing channel feedback in communication system
10/10/2007CN101051858A Method for realizing asymmetric service in broad band radio communication system
10/10/2007CN100342660C Method for wireless information transfer
10/09/2007US7281189 Apparatus and method for separately modulating systematic bits and parity bits in accordance with communication quality
10/09/2007US7280806 Communication system
10/09/2007US7280804 Channel adaptation using variable sounding signal rates
10/09/2007US7280626 Synthesizing coherent correlation sums at one or multiple carrier frequencies using correlation sums calculated at a coarse set of frequencies
10/09/2007US7280624 Method and apparatus for noise threshold calculation in wireless communication
10/09/2007US7280622 Low-complexity hierarchical decoding for communications systems using multidimensional QAM signaling
10/09/2007US7280620 Electronic device including image forming apparatus
10/09/2007US7280619 Method and apparatus for compensating I/Q imbalance in receivers
10/09/2007US7280616 Optimizing a filter bandwidth in a digital receiver
10/09/2007US7280615 Method for making a clear channel assessment in a wireless network
10/09/2007US7280613 Method to inject hierarchical data onto single carrier stream
10/09/2007US7280612 Digital branch calibrator for an RF transmitter
10/09/2007US7280611 Nonlinear distortion compensating device
10/09/2007US7280610 Data converter, signal generator, transmitter and communication apparatus using the data converter or the signal generator, and data conversion method
10/09/2007US7280609 Method for matching the bit rate of a bit stream which is to be transmitted in a communication system and corresponding communication device
10/09/2007US7280608 Real time dynamic correlator
10/09/2007US7280607 Ultra wide bandwidth communications method and system
10/09/2007US7280606 Apparatus and method for transmitting/receiving data in a CDMA mobile communication system
10/09/2007US7280605 Orthogonal frequency division multiplexing (OFDM) receiver used in wireless local area network system and symbol timing synchronization method therefor
10/09/2007US7280604 Space-time doppler coding schemes for time-selective wireless communication channels
10/09/2007US7280603 DSL receivers for TCM-ISDN environments and methods of operating same
10/09/2007US7280601 Method for operating multiple overlapping wireless networks
10/09/2007US7280590 Receiver termination network and application thereof
10/09/2007US7280581 Method of adaptive Walsh code allocation
10/09/2007US7280563 Multi-carrier signal transmitter and multi-carrier signal receiver
10/09/2007US7280504 OFDM transmitting and receiving apparatus
10/09/2007US7280497 Methods and apparatus for coupling an earth terminal to a satellite
10/09/2007US7280496 Methods and apparatus for coupling a satellite to an earth terminal
10/09/2007US7280473 Data streaming method and apparatus using adaptive transmission scheduling
10/09/2007US7280469 Efficient implementation of large size FFT
10/09/2007US7280468 Apparatus for constant amplitude coded bi-orthogonal demodulation
10/09/2007US7280467 Pilot transmission schemes for wireless multi-carrier communication systems
10/09/2007US7280003 Modulation device and transmitter comprising such a device
10/04/2007WO2007112371A1 Feedback of channel state information for mimo and subband scheduling in a wireless communication system
10/04/2007WO2007112225A1 Mimo receiver and method for beamforming using cordic operations
10/04/2007WO2007111825A2 Method of ofdma tone interference cancellation
10/04/2007WO2007111764A1 Video over cable modem
10/04/2007WO2007111457A2 A method and structure of configuring preamble to support transmission of data symbol in a wireless communication system
10/04/2007WO2007111456A2 A method of reducing overhead for multi-input, multi-output transmission system
10/04/2007WO2007111434A1 Method and apparatus for searching for cells utilizing downlink preamble signal
10/04/2007WO2007111431A1 Apparatus for estimating and compensating carrier frequency offset and data receiving method in receiver of wireless communication system
10/04/2007WO2007111311A1 Receiver apparatus
10/04/2007WO2007111198A1 Transmission method and transmission device
10/04/2007WO2007110805A2 Transmitter with delay mismatch compensation
10/04/2007WO2007110447A1 Method and arrangement in wireless communication networks using relaying
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