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)
09/2003
09/02/2003US6615050 Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communication system
09/02/2003US6615030 Mobile communications system and radio base station apparatus
09/02/2003US6615027 Method and circuit for providing interface signals between integrated circuits
09/02/2003US6614861 Method and apparatus for higher dimensional modulation
09/02/2003US6614860 Compensation of doppler shift in a mobile communication system
09/02/2003US6614857 Iterative channel estimation and compensation based thereon
09/02/2003US6614856 Intermediary frequency input QPSK demodulator
09/02/2003US6614854 System and method for adaptive predistortion
09/02/2003US6614853 Method of transmission and device to carry out said method
09/02/2003US6614852 System for the estimation of the complex gain of a transmission channel
09/02/2003US6614851 Efficient algorithm for blind detection of signal constellation
09/02/2003US6614840 Equalizer with phase-locked loop
09/02/2003US6614838 System and method of communication via embedded modulation
09/02/2003US6614833 Method for generating complex four-phase sequences for a CDMA communication system
09/02/2003US6614768 Enhanced mobility and address resolution in a wireless premises based network
08/2003
08/28/2003WO2003071766A1 M-ary orthagonal coded communications method and system
08/28/2003WO2003071758A1 I/q mismatch compensation in an ofdm receiver in presence of frequency offset
08/28/2003WO2003071757A1 Frequency modulator for digital transmissions
08/28/2003WO2003071756A1 Dsp-based variable aperture code generation technique
08/28/2003WO2003071755A1 Method for detecting quadrature modulator carrier leak adjusting point by geometrical analysis/calculation method, carrier leak adjusting method, and quadrature modulation apparatus
08/28/2003WO2003071754A1 Method and apparatus for implementing adaptive tomlinson-harashima precoding in a digital data link
08/28/2003WO2003071730A1 Adaptive modulation for wireless networks
08/28/2003WO2003071728A2 Method and apparatus for adapting multi-band ultra-wideband signaling to interference sources
08/28/2003WO2003071724A1 Symbol timing correcting circuit, receiver, symbol timing correcting method, and demodulation processing method
08/28/2003WO2003071682A2 Flexible method and apparatus for encoding and decoding signals using a time division multiple frequency scheme
08/28/2003WO2003024044A3 Adaptive method for adapting rate distribution to predefined block lengths
08/28/2003WO2003013095A3 Method for reducing the power loss occurring during the amplification of ofdm signals, and an associated device
08/28/2003US20030162547 Simulcasting OFDM system having mobile station location identification
08/28/2003US20030162522 Method and device for synchronization and cancellation of a plurality of interfering signals in radio transmission with frequency reuse
08/28/2003US20030162498 Carrierless ultra wideband wireless signals for conveying data
08/28/2003US20030161487 Method and apparatus for transient frequency distortion compensation
08/28/2003US20030161428 Threshold detector for detecting synchronization signals at correlator output during packet acquisition
08/28/2003US20030161423 Digital demodulation device and synchronization detecting method
08/28/2003US20030161414 Device for recovering carrier
08/28/2003US20030161411 Ultra wide bandwidth communications method and system
08/28/2003US20030161282 Multiple-input, multiple-output (MIMO) systems with multiple transmission modes
08/28/2003US20030161278 Symbol data converting circuit
08/27/2003EP1339248A1 Method and device of gain equalization based on wideband multi-carrier base-station
08/27/2003EP1339245A1 Method and apparatus for channel assignment and call admission control in spatial division multiple access (SDMA) communication systems
08/27/2003EP1339197A1 I/Q Mismatch compensation in an OFDM receiver in presence of frequency offset
08/27/2003EP1339187A2 Information transmission with reduced identification-data size
08/27/2003EP1339174A2 Code division multiple access communication system
08/27/2003EP1339173A2 Receiver for spread spectrum signals
08/27/2003EP1339171A2 Method and device for synchronization and cancellation of a plurality of interfering signals in radio transmission with frequency reuse
08/27/2003EP1339167A2 Apparatus for downconverting signals from intermediate frequency to baseband , and method
08/27/2003EP1338113A2 Interpolator for a timing recovery circuit
08/27/2003EP1338112A1 Timing drift compensation in wireless packet-based systems
08/27/2003EP1338110A1 Methods and arrangements in a telecommunications system
08/27/2003EP1338095A1 System and method for high speed digital signaling
08/27/2003EP1338094A1 System and method for embedding a sub-channel in a block coded data stream
08/27/2003EP1338085A1 A direct digital amplitude modulator
08/27/2003EP1092279B1 Power control in a multi-carrier radio transmitter
08/27/2003EP0986883B1 Method and apparatus for band-adaptive demodulation
08/27/2003EP0958686B1 Demodulation with separate branches for phase and amplitude
08/27/2003EP0947046A4 Dpsk demodulator
08/27/2003EP0772932B1 Method and device for phase-modulated signals
08/27/2003EP0770311B1 Transmission system with improved tone detection
08/27/2003EP0770310B1 Transmission system with improved tone detection
08/27/2003EP0620959B1 Frequency synchronized bidirectional radio system
08/27/2003CN1438777A Symbolic ynchroni zing and carrier-wave synchronizing method based on modification system of circulation prefix
08/27/2003CN1438776A Apparatus and method for reducing code-element timing in OFDM receiver
08/27/2003CN1119903C Power conservation for POTS and modulated data transmission and receiving apparatus
08/27/2003CN1119900C System for receiving variable encoding formats and number of transmission channels
08/27/2003CN1119881C Reverse-spread spectrum device and method for measuring frequency faults
08/27/2003CN1119854C Direct digital synthesis of precise, stable angle modulated RF signal
08/27/2003CN1119839C Radio transmitting apparatus and gain control method for the same
08/26/2003US6611804 Universal TTY/TDD devices for robust text and data transmission via PSTN and cellular phone networks
08/26/2003US6611794 Signal amplitude restoration apparatus and method
08/26/2003US6611570 Programmable digital intermediate frequency transceiver
08/26/2003US6611569 Down/up-conversion apparatus and method
08/26/2003US6611568 Variable rate modulator
08/26/2003US6611567 Method and apparatus for pulse shaping
08/26/2003US6611565 Broadband transmitter for a signal consisting of a plurality of digitally modulated carriers
08/26/2003US6611554 Method of forming a set of constellations which is intended to be used for transmitting data between a transmitter and a receiver
08/26/2003US6611551 OFDM channel identification
08/26/2003US6611493 Communication, transmission and receiving method and apparatus using orthogonal frequency division multiplexing modulation system
08/21/2003WO2003069868A1 Transmission apparatus and transmission method
08/21/2003WO2003069867A1 Gaussian fsk modulation with more than two modulation states
08/21/2003WO2003069865A1 Frequency-timing control loop for wireless communication systems
08/21/2003WO2003069824A2 Transport block set transmission using hybrid automatic repeat request
08/21/2003WO2003069802A1 Modular device for multiple reception of a modulated signal
08/21/2003WO2003069772A2 Digital modulator
08/21/2003WO2003041352A3 Bitrate matching for adsl
08/21/2003WO2003034676A3 Change of sampling rate with single carrier and multicarrier waveforms
08/21/2003WO2003013191A3 Method and device for compensating a phase error in a receiver and/or transmitter system with an i/q-interface
08/21/2003WO2001093434A3 Method and system for enabling device functions based on distance information
08/21/2003US20030158330 Foaming emulsions and foaming compositions containing a polymer comprising water-soluble units and units with an lcst, especially for cosmetic uses
08/21/2003US20030157915 3G radio
08/21/2003US20030157912 3G radio
08/21/2003US20030157909 3G radio
08/21/2003US20030157905 Transmitter and associated method for reducing the adjacent channel power during wireless communications
08/21/2003US20030157901 3G radio
08/21/2003US20030157888 Vehicle mounted DSRC apparatus
08/21/2003US20030156668 3G radio
08/21/2003US20030156660 DSP-based variable aperture code generation technique
08/21/2003US20030156659 Mapping method of code word with QAM modulation
08/21/2003US20030156657 Transmitter for transmitting signals over radio channels and mehtod for transmitting signals over radio channels
08/21/2003US20030156654 Method for determining parameters of an ofdm signal and associated receiver
08/21/2003US20030156629 Processing for improved performance and reduced pilot
08/21/2003US20030156603 Apparatus and method for trellis encoding data for transmission in digital data transmission systems
1 ... 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 ... 898