Patents for H04L 27 - Modulated-carrier systems (89,721)
09/2004
09/07/2004US6788728 System and method for reducing peak-to-average ratio of the reverse link modulator in a CDMA phone system
09/07/2004US6788662 Method for adaptive reverse power control for spread-spectrum communications
09/07/2004US6788654 Digital data receiver
09/07/2004US6788349 Method and system for broadcasting a digital data signal within an analog TV signal using Orthogonal Frequency Division Multiplexing
09/07/2004US6788236 Method and system for implementing a sigma delta analog-to-digital converter
09/07/2004US6788117 Method and apparatus for generating frequency-stable wavelets
09/02/2004WO2004075557A1 Robust system for transmitting and receiving map data
09/02/2004WO2004075503A1 Wireless receiver deinterleaver having partitioned memory
09/02/2004WO2004075502A2 Receiving apparatus and method for digital multi-carrier transmission
09/02/2004WO2004075501A1 Improvements relating to frequency estimation
09/02/2004WO2004075470A2 Controlled superposition coding in multi-user communication systems
09/02/2004WO2004075469A2 Joint, adaptive control of equalization, synchronization, and gain in a digital communications receiver
09/02/2004WO2004075460A2 Method and apparatus for frequency division multiplexing
09/02/2004WO2004075459A2 Transmit diversity and separating multiple loopback signals
09/02/2004WO2004075451A1 Multi-carrier radio communication system, transmission device, and reception device
09/02/2004WO2004075444A2 Peak-to-average power ratio management for multi-carrier modulation in wireless communication systems
09/02/2004WO2004075443A2 Receiving and transmitting signals having multiple modulation types using sequencing interpolator
09/02/2004WO2004075442A2 Methods and apparatus of enhanced coding in multi-user communications systems
09/02/2004WO2004075433A1 Power line carrier communication device and power line carrier communication method
09/02/2004WO2004075395A1 Efficient modulation of rf signals
09/02/2004WO2004025873A3 Method for transmitting signals in a radio communication system
09/02/2004US20040172438 Method for compensating for a phase error in a reception and/or transmission system having an I/Q interface
09/02/2004US20040172435 Architecture and method for performing a fast fourier transform and OFDM reciever employing the same
09/02/2004US20040171398 Channel estimation method for a mobile communication system
09/02/2004US20040171359 Power allocation in a communication system
09/02/2004US20040170376 Receiver
09/02/2004US20040170238 Frequency synchronizing method and frequency synchronizing apparatus
09/02/2004US20040170237 Method and system for fast timing recovery for preamble based transmission systems
09/02/2004US20040170235 Iterative decoding
09/02/2004US20040170228 Frequency domain partial response signaling with high spectral efficiency and low peak to average power ratio
09/02/2004US20040170227 Frequency correction for a multicarrier system
09/02/2004US20040170226 Method, apparatus and system for high-speed transmission on fiber optic channel
09/02/2004US20040170224 Communication system and communication device
09/02/2004US20040170197 Method and device for synchronisation in OFDM
09/02/2004US20040170157 Apparatus and method for transmitting/receiving preamble in ultra wideband communication system
09/02/2004US20040170152 Wireless LAN apparatus
09/02/2004US20040170120 Method for modulation
09/02/2004DE10306290A1 Arrangement for radio signal de-spreading in radio communications system with code multiple access has preamble detection device, finger de-spreading device, path observation/path control device
09/02/2004CA2516529A1 Peak-to-average power ratio management for multi-carrier modulation in wireless communication systems
09/02/2004CA2516382A1 Controlled superposition coding in multi-user communication systems
09/02/2004CA2516359A1 Methods and apparatus of enhanced coding in multi-user communications systems
09/02/2004CA2514186A1 Robust system for transmitting and receiving map data
09/01/2004EP1453268A2 Multicarrier communication with variable overhead rate
09/01/2004EP1453267A2 Bit allocation among carriers in multicarrier communications
09/01/2004EP1453266A1 Modulation method in a TETRA communication system
09/01/2004EP1453265A1 Information transfer methods
09/01/2004EP1453264A1 Modulation device, demodulation device, modulation/demodulation system, modulation method, demodulation method, modulation program, computer-readable recording medium containing the modulation program, demodulation program, and computer-readable recording medium containing the demodulation program
09/01/2004EP1453263A1 DATA COMMUNICATION CONTROL SYSTEM, TRANSMITTER, AND TRANSMITTING METHOD
09/01/2004EP1453261A1 Channel estimation method for a mobile communication system
09/01/2004EP1453215A2 Communication device
09/01/2004EP1453210A1 Radio transmission device and radio transmission method
09/01/2004EP1451993A1 Multirate digital transceiver
09/01/2004EP1451992A2 Cancellation of interference in mutlicarrier receivers
09/01/2004EP1451991A2 Iterative detection and decoding for a mimo-ofdm system
09/01/2004EP1451964A2 Time-domain transmit and receive processing using singular value decomposition for mimo systems
09/01/2004EP1451955A2 Method and apparatus for providing multiple spread spectrum clock generator circuits with overlapping output frequencies
09/01/2004EP1451942A1 Method of selecting a receiving path and receiving device comprising several receiving paths
09/01/2004EP1451923A1 Am digital audio broadcasting with analog signal precompensation
09/01/2004CN1526230A Evaluation circuit for alternating voltage pulses
09/01/2004CN1526223A Transmission of multi-carrier waves on one electrical power supply line
09/01/2004CN1526222A Transmitting and identifying a modulation type in digital communication systems by way of a phase rotation factor applied to a training sequence
09/01/2004CN1526215A Method and apparatus for efficiently calculating log-likelihood ratios
09/01/2004CN1526196A Reduced soft output information packet selection
09/01/2004CN1525768A Channel estimation method for a mobile communication system
09/01/2004CN1525727A A network digital camera system and method thereof
09/01/2004CN1525725A A network digital camera and method thereof
09/01/2004CN1525712A A receiving and processing method for frequency shift keying signal
09/01/2004CN1525708A Wireless lan apparatus
09/01/2004CN1525677A Method for balancing the ratio Eb/I in a service multiplexing cdma system and telecommunication systems using method
09/01/2004CN1525675A Method and apparatus for setting a guard interval in an ofdm communication
09/01/2004CN1525674A Multi transmission/reception orthogonal frequency division multiplexing system and method
09/01/2004CN1525673A A Turbo method for eliminating trainning sequence
09/01/2004CN1525672A Method for tracing carrier frequency of orthogonal frequency division multiplexing system in multipath fading channel
09/01/2004CN1525659A Transmission wireless station, reception wireless station, wireless communication system and wireless communication method
09/01/2004CN1165170C Burst signal detecting and AGC method for orthogonal frequency division multiplexing system
08/2004
08/31/2004US6785556 Method and apparatus for a software configurable wireless modem adaptable for multiple modes of operation
08/31/2004US6785545 Digital mobile wireless communications apparatus and the system using the same
08/31/2004US6785529 System and method for I-Q mismatch compensation in a low IF or zero IF receiver
08/31/2004US6785520 System and method for antenna diversity using equal power joint maximal ratio combining
08/31/2004US6785353 Synchronization loss detection in a V.34 receiver
08/31/2004US6785351 Method and system for Doppler frequency estimation
08/31/2004US6785349 Correlation based method of determining frame boundaries of data frames that are periodically extended
08/31/2004US6785348 Demodulator and method for demodulating CPFSK-modulated signals using a linear approximation of the CPFSK signal
08/31/2004US6785347 Nonlinear-least squares based method and apparatus for FSK signal decoding
08/31/2004US6785346 Complex phase-locked loop demodulator for low-IF and zero-IF radio receivers
08/31/2004US6785343 Rectangular-to-polar conversion angle quantizer
08/31/2004US6785342 Nonlinear pre-distortion modulator and long loop control
08/31/2004US6785331 Predictive encoding and decoding methods of video data
08/31/2004US6785300 Delay compensation
08/31/2004US6785258 System and method for data scrambling to reduce the crest factor in an OFDM waveform
08/31/2004US6784817 Data generating method, data generator, and transmitter using the same
08/31/2004US6784730 Contactless IC card system
08/26/2004WO2004073276A1 Two-dimensional channel estimation for multicarrier multiple input outpout communication systems
08/26/2004WO2004073275A1 Space-time-frequency diversity for multi-carrier systems
08/26/2004WO2004073249A1 Differential multiple-norm transmit diversity with forward error correction and related diversity reception
08/26/2004WO2004073247A1 Differential multiple-length transmit and reception diversity
08/26/2004WO2004073224A1 Method of reducing papr in multiple antenna ofdm communication system and multiple antenna ofdm communication system using the method
08/26/2004WO2004073219A1 Interleaving method for ofdm communications
08/26/2004WO2004073200A1 Method of reducing feedback channel state information within adaptive ofdma system and adaptive ofdma system using the same
08/26/2004WO2004073195A1 Variable sign/phase and inter-pulse time modulated multi-band uwb communication system