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)
03/2003
03/19/2003EP1293059A1 Hybrid arq method with single constellation rearrangement
03/19/2003EP1293058A2 System and method for peak power reduction in multiple carrier communications systems
03/19/2003EP1293056A1 Multi-dimensional orthogonal resource hopping multiplexing communications method and apparatus
03/19/2003EP1293055A2 Method and apparatus for reduction of interference in fm in-band on-channel digital audio broadcasting receivers
03/19/2003EP1238501A4 Ultra-wideband data transmission system
03/19/2003EP1198928A4 Data communication device
03/19/2003EP1142121B1 Circuit for the frequency multiplication of an angle modulated signal using a pll and method
03/19/2003EP1034617B1 Broadband phase-shifting circuit
03/19/2003CN1404675A Multicarrier receiver with channel estimator
03/19/2003CN1404662A Method for frequency offset estimation in a direct sequence spread spectrum communications receiver
03/19/2003CN1404309A Burst signal detecting and AGC method for orthogonal frequency division multiplexing system
03/19/2003CN1404275A Reducton of non-influence transmitting signal DMT peak value
03/19/2003CN1404271A Apparatus and method for keeping frame synchronization in multi-carrier transmission system
03/19/2003CN1404238A Method and equipment for modulating data signal via conversion between direct and differential modulation
03/19/2003CN1404231A Antinoise and burst mode receiving equipment and method for recovering clock signal and its data
03/19/2003CN1404230A Signal multiplexer and multiplexing method
03/19/2003CN1404217A Amplifier
03/18/2003US6535715 Hybrid/fiber coax video and telephony communication system with poly-phase filtering
03/18/2003US6535589 Method and apparatus for reducing transmission errors in digital subscriber line (DSL) communication systems
03/18/2003US6535566 Demodulating method and receiver apparatus
03/18/2003US6535562 Method and apparatus for rotating the phase of a complex signal
03/18/2003US6535561 Dual-mode modulation systems and methods including oversampling of narrow bandwidth signals and DC offset compensation
03/18/2003US6535560 Coherent adaptive calibration system and method
03/18/2003US6535553 Passband equalizers with filter coefficients calculated from modulated carrier signals
03/18/2003US6535550 Transceiver with variable width cyclic prefix
03/18/2003US6535549 Method and apparatus for carrier phase tracking
03/18/2003US6535545 RF modem utilizing saw resonator and correlator and communications transceiver constructed therefrom
03/18/2003US6535500 Transmitter of a mobile station in a CDMA communications system and method therefor
03/18/2003US6535497 Methods and systems for multiplexing of multiple users for enhanced capacity radiocommunications
03/18/2003US6535478 Reduced peak-to-average amplitude multichannel link
03/18/2003US6535073 Device and method for I/Q modulation, frequency translation and upsampling
03/18/2003CA2289338C Frame alignment and time domain equalization for communications systems using multicarrier modulation
03/18/2003CA2148384C Methods for performing intelligent network services with an isdn network terminator located at a subscriber's premise
03/13/2003WO2003022004A2 Technique for continuous ofdm demodulation
03/13/2003WO2003021993A1 Wireless access system using selectively adaptable beam forming in tdd frames and method of operation
03/13/2003WO2003021972A2 Multi-user detection
03/13/2003WO2003021859A1 Compensation for non-linear distortion in a modem receiver
03/13/2003WO2003021856A1 Transmission/reception apparatus and transmission/reception method
03/13/2003WO2003021846A2 Communicating data using wideband communications
03/13/2003WO2003021845A2 Communicating data using wideband communications
03/13/2003WO2003021834A1 Multi-carrier cdma transmission system, transmission apparatus and reception apparatus used in the system, and multi-carrier cdma transmission method
03/13/2003WO2003021833A1 Multi-pass interference removal apparatus and multi-pass interference removal method
03/13/2003WO2003021826A1 Method for measuring and compensating gain and phase imbalances in quadrature modulators
03/13/2003WO2003021804A1 New rfic transceiver architecture and method for its use
03/13/2003WO2003021795A2 Method and apparatus for suppressing multipath interference usingprecoded pilots
03/13/2003WO2003021793A1 Information transmission apparatus, information transmission method, information reception apparatus, and information reception method
03/13/2003WO2003021792A1 Data decoding method
03/13/2003WO2002078280A3 Method for frame and frequency synchronization of an ofdm signal and method for transmitting an ofdm signal
03/13/2003WO2002060145A3 Method for adaptive bit assignment and fine gain setting in a multi-carrier communications system
03/13/2003WO2002057919A3 Redundant telecommunication system using standby unit memory updating apparatus and method of operation
03/13/2003WO2002052807A3 Equalisation and subcarrier suppression
03/13/2003US20030050027 Digitally controlled analog RF filtering in subsampling communication receiver architecture
03/13/2003US20030048860 Method and apparatus for symbol independent discriminator correlator automatic frequency control
03/13/2003US20030048856 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion
03/13/2003US20030048839 Training of equalisers, for use with signals of differing data rates
03/13/2003US20030048835 ADSL modem apparatus
03/13/2003US20030048834 Spectrally efficient FQPSK, FGMSK, and FQAM for enhanced performance CDMA, TDMA, GSM, OFDM, and other systems
03/13/2003US20030048809 Receiver, sender, method and burst signal
03/13/2003US20030048753 Method and apparatus for multi-path elimination in a wireless communication system
03/13/2003US20030048462 Method for generating multi-carrier sequences
03/13/2003US20030048384 Method for transmitting data streams, and warm start sequence for S(H)DSL transmission/reception devices
03/13/2003US20030048099 Modulation semiconductor integrated circuit device and testing method for oscillation circuit
03/13/2003CA2496402A1 Communicating data using wideband communications
03/13/2003CA2458650A1 Compensation for non-linear distortion in a modem receiver
03/12/2003EP1292080A1 Method and modem for generating multi-carrier training sequences based on its cyclic time-domain shift with respect to a reference sequence
03/12/2003EP1292063A1 Frame synchronization apparatus and frame synchronization method
03/12/2003EP1292037A1 Communication apparatus and communication method
03/12/2003EP1292017A1 Receiver
03/12/2003EP1290845A2 Method for synchronising ofdm symbols during radio transmissions
03/12/2003EP1290844A2 Packet configuration for interoperability between 802.11a and 802.11b standards
03/12/2003EP1290842A2 Adaptive precoding
03/12/2003EP1290783A1 Digital modulation synthesizer
03/12/2003EP1290463A2 Method and apparatus for compensating local oscillator frequency error
03/12/2003EP1145573B1 Communication system with reduced power variation and method therefor
03/12/2003EP1012962B1 Multi-carrier transmitting apparatus and method
03/12/2003CN1402927A Method and arrangement for synchronizing receiver to quadrature amplitude modulated signal
03/12/2003CN1402926A Method for transmitting data to be transmitted using subscriber modem
03/12/2003CN1402925A Method and apparatus for votating phase of complex PSK signal
03/11/2003US6532271 Carrier recovery and doppler frequency estimation
03/11/2003US6532255 Method and arrangement for minimizing the autocorrelation error in the demodulation of a spread-spectrum signal subject to multipath propagation
03/11/2003US6532253 Spread spectrum systems with trellis-coded modulation
03/06/2003WO2003019893A1 Communication quality estimation method, communication quality estimation apparatus, and communication system
03/06/2003WO2003019891A1 Monitoring upstream frequency band
03/06/2003WO2003019890A1 Method and device of channel decoding based on reliability enhanced deleting convolution code and qam modulated code
03/06/2003WO2003019847A1 A method and a system for transfering amr signaling frames on halfrate channels
03/06/2003WO2003019844A2 Implementing a physical layer automatic repeat request for a subscriber unit
03/06/2003WO2003019838A1 Method for physical layer automatic repeat request for a base station
03/06/2003WO2003019836A1 Radio communication apparatus and radio communication method
03/06/2003WO2003019825A1 Method for improving quality of transmitted data using loopback during operation
03/06/2003WO2003019817A1 Physical layer automatic repeat request (arq)
03/06/2003WO2003019812A1 Method for physical layer automatic repeat request for a subscriber unit
03/06/2003WO2003019811A2 Data streaming method and apparatus using adaptive transmission scheduling
03/06/2003WO2003019809A1 Improvements in or relating to frequency-hopping modulators and demodulators
03/06/2003WO2003019794A2 Method and apparatus implementing retransmission in a communication system providing h-arq
03/06/2003WO2003019792A1 System and method performing quadrature amplitude modulation by combining co-sets and strongly coded co-set identifiers
03/06/2003WO2003019791A2 System and method for reducing the peak power in multi-carrier modulation
03/06/2003WO2003019258A1 Optical communications systems, devices, and methods
03/06/2003WO2003019240A2 Optical communications systems, devices, and methods
03/06/2003WO2002101940A3 Receiver having decision feedback equalizer with remodulation
03/06/2003WO2002100059A3 Combining frequency multiplication and modulation
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