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)
04/2003
04/23/2003CN1106776C Communication method, transmitter, Receiver and celluler radio communication system
04/23/2003CN1106743C M-ary FSK receiver
04/23/2003CN1106742C Quadrature modulator operable in quast-microwave band of digital communication system
04/23/2003CN1106722C Frequency division multiplexed transmission of sub-band signal
04/23/2003CN1106716C Data decording apparatus
04/22/2003US6553540 Efficient system and method for forward error correction
04/22/2003US6553535 Power-efficient communication protocol
04/22/2003US6553534 Forward error correction with channel adaptation
04/22/2003US6553084 Digital automatic gain control linearizer and digital automatic gain control circuit using the same
04/22/2003US6553083 Frequency control and orthogonal detection circuit and FSK receiver
04/22/2003US6553082 Channel estimation sequence and method of estimating a transmission channel which uses such a channel estimation
04/22/2003US6553080 Constant envelope modulation communication system
04/22/2003US6553079 Digital modulator for angle and/or amplitude modulation
04/22/2003US6553066 Time error compensation arrangement and multi-carrier modem comprising the arrangement
04/22/2003US6553063 Constellation-multiplexed transmitter and receiver
04/22/2003US6553004 Method and device to reduce the peak factor of digital radio or television broadcasting signals
04/22/2003US6552609 Signal distortion compensating apparatus and method
04/22/2003CA2248062C An apparatus, method and article of manufacture for carrier frequency compensation in an fm radio receiver
04/17/2003WO2003032597A1 Method for reducing transmissions in boundary zones, in amplitude modulation transmitters operating in digital mode
04/17/2003WO2003032596A1 Trellis code design for qpsk and higher order quadrature amplitude modulations
04/17/2003WO2003032595A1 Noiseless data transmission method
04/17/2003WO2003032594A1 Information transfer methods
04/17/2003WO2003032593A1 Receiver to determine modulation type
04/17/2003WO2003032546A1 Channel inferring device and method
04/17/2003WO2003032544A1 Ofdm demodulation circuit and ofdm reception apparatus using the same
04/17/2003WO2003032543A1 Automatic frequency control device for ofdm and method therefor
04/17/2003WO2003032542A1 Frequency synchronizing method, and frequency synchronizing device
04/17/2003WO2003032541A1 Ofdm receiving method and ofdm receiving device
04/17/2003WO2003032535A2 Long distance optical transmission system for high dynamic range signals
04/17/2003WO2003032523A1 Diversity receiver and method therefor
04/17/2003WO2002084778A3 Tunable phase shifter and applications for same
04/17/2003US20030074500 Information processing system, information processing apparatus and method,recording medium, and program
04/17/2003US20030073458 Method and system for operating a field programmable line card using a country coded template
04/17/2003US20030072452 Preamble structures for single-input, single-output (SISO) and multi-input, multi-output (MIMO) communication systems
04/17/2003US20030072397 Digital front-end for wireless communication system
04/17/2003US20030072395 Method and apparatus for channel quality measurements
04/17/2003US20030072393 Quadrature transceiver substantially free of adverse circuitry mismatch effects
04/17/2003US20030072392 System and method for an in-service decision-directed signal to noise ratio estimator
04/17/2003US20030072389 Precision inphase / Quadrature up-down converter structures and methods
04/17/2003US20030072388 Time delay estimation in a transmitter
04/17/2003US20030072386 Apparatus, and associated method, for Forming a Systematic, Recursive, Space-time Code
04/17/2003US20030072383 Method of and system for modulating and demodulating a communication signal using differential quadrature phase shift keying (DQPSK)
04/17/2003US20030072382 Spatio-temporal processing for communication
04/17/2003US20030072380 Method and apparatus for cross-talk mitigation through joint multiuser adaptive pre-coding
04/17/2003US20030072379 Method and apparatus for determining power allocation in a MIMO communication system
04/17/2003US20030072331 Configuration of overhead channels in a mixed bandwidth system
04/17/2003US20030072292 Transmitting/receiving apparatus and method for packet retransmission in a mobile communication system
04/17/2003US20030072291 Multi-user detection method for a receiver in a MC-CDMA telecommunication system
04/17/2003US20030072286 Transmitting/receiving apparatus and method for packet retransmission in a mobile communication system
04/17/2003US20030072284 Sample rate change between single-carrier and multi-carrier waveforms
04/17/2003US20030072258 Efficient OFDM communications with interference immunity
04/17/2003US20030072256 Method for creating symmetric-identical preamble and method for synchronizing symbol and frequency of orthogonal frequency division multiplexed signals by using symmetric-identical preamble
04/17/2003US20030072255 System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design
04/17/2003US20030072254 Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
04/17/2003US20030072253 Communication terminal apparatus and demodulation method
04/17/2003US20030071731 Amplifier modulation
04/17/2003US20030071674 Double balance mixer circuit and orthogonal demodulation circuit using the same
04/17/2003US20030071130 Decoding device and smart card having such a decoding device
04/16/2003EP1303094A2 Noise canceling method and apparatus
04/16/2003EP1303092A2 Selective tap initialization in a multicarrier equaliser
04/16/2003EP1303074A2 Symbol synchronisation in EDGE handsets
04/16/2003EP1303073A1 PRBS generator selection in modem communication
04/16/2003EP1303068A1 Radio communication terminal and demodulation method
04/16/2003EP1303064A2 System and method for in-service decision-directed signal to noise ratio estimation
04/16/2003EP1303040A2 Gain control method for receiving signals transmitted in bursts and receiver using such method
04/16/2003EP1302077A1 Method for determining parameters of an ofdm signal and associated receiver
04/16/2003EP1302067A1 Television receiver
04/16/2003EP1302045A2 Reduction of peak to average power ratio
04/16/2003EP1302044A1 Receiver circuit
04/16/2003EP1302043A1 Method for the transmission of digital data by means of radio signals with orthogonal frequency division multiplexing (ofdm)
04/16/2003EP1302040A2 Phase modulator using a frequency synthesizer
04/16/2003EP1302027A2 Communication structure with channels configured responsive to reception quality
04/16/2003EP1302017A2 Method and apparatus for equalizer updating and sampling rate control
04/16/2003EP1302015A1 A method of and a device for generating a signal having a predetermined quality criterion for use in or on a communication system
04/16/2003EP1302001A2 Carrierless ultra wideband wireless signals for conveying application data
04/16/2003EP1301803A2 Signal detector and method employing a coherent accumulation system to correlate non-uniform and disjoint sample segments
04/16/2003EP1108319B1 Device and methods for false carrier lock detection in a receiver
04/16/2003EP0990334B1 Method for transferring data with a plurality of non-equidistant frequency bands
04/16/2003CN1411652A Method for estimating frequency shift of CPFSK signal
04/16/2003CN1411651A Single chip CMOS transmitter/receiver and method of using same
04/16/2003CN1411648A Arrangement for reducing power dissipation in line driver
04/16/2003CN1411640A Multi-dimensional orthogonal resource hopping multiplexing communication method and apparatus
04/16/2003CN1411628A Circuit arrangement and method for offset compensation of signal
04/16/2003CN1411261A Radio data communication apparatus
04/16/2003CN1411236A Data retransmission method based on bit conversion
04/16/2003CN1411207A Communication apparatus
04/16/2003CN1411190A Vertical Bell laboratory ranked space and time code array linear detecting method
04/16/2003CN1411179A OFDM transmitting and receiving apparatus
04/16/2003CN1411160A Automatic gain controlled wireless apparatus and gain controlling method
04/16/2003CN1411147A Precorrective linearized power amplifying system using digital IF technique
04/16/2003CN1106115C Digital carrier wave restoring device and method therefor in television signal receiver
04/16/2003CN1106103C Radio apparatus and method for modulating peak value and bandwidth
04/16/2003CN1106102C Rotationally invariant trellis coding incorporating transparent binary convolutional codes
04/16/2003CN1106101C Decoding circuit with super linear integrator and method thereof
04/15/2003US6549763 Receiving apparatus and method
04/15/2003US6549716 Communication system
04/15/2003US6549592 Enhanced synchronization burst for OFDM systems
04/15/2003US6549590 Current-controlled carrier tracking filter for improved spurious signal suppression
04/15/2003US6549589 Digital audio broadcasting receiver
04/15/2003US6549588 Communications system and corresponding receiver unit
1 ... 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 ... 898