Patents for H04L 27 - Modulated-carrier systems (89,721)
07/2004
07/01/2004US20040125889 RF communications system utilizing digital modulation to transmit and receive data
07/01/2004US20040125888 Quadrature modulation transmitter
07/01/2004US20040125886 Pre-emphasis of TMDS signalling in video applications
07/01/2004US20040125883 Soft decision decoder, and log likelihood ratio calculator and method thereof for enhanced performance in soft decision decoding
07/01/2004US20040125882 Radio communicating method, radio transmitting apparatus, and radio receiving apparatus
07/01/2004US20040125881 Signal detector
07/01/2004US20040125880 Enhanced OFDM by use of alternating polarization states
07/01/2004US20040125873 Method for estimating doppler frequency
07/01/2004US20040125872 Integrated modem circuit operating at 1 Mbit/s or more
07/01/2004US20040125869 Method and apparatus for non-intrusive transceiver property adjustment
07/01/2004US20040125862 Pilot processing architecture
07/01/2004US20040125824 Network delay identification method and apparatus
07/01/2004US20040125787 Method and apparatus for synchronized channel transmission
07/01/2004US20040125742 Method and analyzing device for analyzing an OFDM signal
07/01/2004US20040125741 Process for selecting a transmission channel and receiver of signals with antenna diversity
07/01/2004US20040125740 Method and apparatus for controlled spectrum multi-carrier modulation
07/01/2004US20040125732 Data recording method of optical storage medium
07/01/2004US20040124959 Transformer circuit arrangement
07/01/2004US20040124938 Trimming of a two point phase modulator
07/01/2004CA2515578A1 Transmitter stage
07/01/2004CA2510697A1 Modulating a digital signal in a fading frequency band
06/2004
06/30/2004EP1434403A1 Carrier synchronisation in a multicarrier receiver
06/30/2004EP1434402A1 Fractional time domain interpolation
06/30/2004EP1434401A1 Time domain equalization using frequency domain operations
06/30/2004EP1434381A1 Link adaptation process
06/30/2004EP1434373A1 Ofdm demodulation circuit and ofdm reception apparatus using the same
06/30/2004EP1434363A1 Efficient echo canceller and method
06/30/2004EP1434362A2 Frequency hopping system and method thereof
06/30/2004EP1433295A2 Method for verifying the availability of a signal component and device for carrying out said method
06/30/2004EP1173942A4 Method and apparatus for peak limiting in a modulator
06/30/2004EP1133858B1 Bit allocation among carriers in multicarrier communications
06/30/2004EP1048126A4 A transmitter and a method for transmitting data
06/30/2004EP0786183B1 Transmission system with improved symbol processing
06/30/2004CN1509557A Transmission apparatus and transmission method
06/30/2004CN1509556A Radio signal treatment system
06/30/2004CN1509555A Self-adaptive communication
06/30/2004CN1509554A Multiple bandwidth amplifier control system for mobile stations and method thereof
06/30/2004CN1509539A Data communication apparatus and method based on orthogonal frequency deivision multiple access
06/30/2004CN1509525A Automatic gain control system for multi-user OFDM digital transmission system using the electric grid
06/30/2004CN1509445A OFDM modulation with reduced DFT (discrete Fourier transform)
06/30/2004CN1509034A Double-phase FSK digital demodulator and signal demodulating method thereof
06/30/2004CN1509028A Grouped communication method, base station mobile station and programe for grouped communication
06/30/2004CN1156122C Multiband detector
06/30/2004CN1156121C Pulse shaping which compensater for component distortion
06/30/2004CN1155964C Digital audio interface signal demodulating device
06/29/2004US6757764 Method and apparatus for transferring information using a constant frequency
06/29/2004US6757525 Distortion compensating apparatus
06/29/2004US6757344 Apparatus and method for measuring sub-carrier frequencies and sub-carrier frequency offsets
06/29/2004US6757343 Discrete wavelet transform system architecture design using filterbank factorization
06/29/2004US6757342 Data demodulation
06/29/2004US6757341 Digital audio interface signal demodulating device
06/29/2004US6757340 Radio receiver and method for preloading an average DC-offset into a channel filter
06/29/2004US6757336 Device and method for performing a carrier recovery
06/29/2004US6757334 Bit rate agile third-generation wireless CDMA, GSM, TDMA and OFDM system
06/29/2004US6757321 Segment-wise channel equalization based data estimation
06/29/2004US6757299 Peak power to average power ratio reduction in multicarrier communication systems using error-correcting code
06/29/2004US6757261 GSM transceiver with time division duplexed operations for receiving data, monitoring signal strength and transmitting data during a single time frame
06/29/2004US6757241 System for interference cancellation
06/29/2004US6756947 Tunable slot antenna
06/29/2004US6756906 Self-diagnostic smoke detector
06/29/2004US6756872 Resource-constrained turbo-equalization
06/29/2004US6756846 Increased output swing line drivers for operation at supply voltages that exceed the breakdown voltage of the integrated circuit technology
06/29/2004CA2433110C Startup protocol for a communication system
06/29/2004CA2250872C Method and apparatus for conditioning modulated signals using window expansion
06/29/2004CA2058450C Treillis precoding for fractional bits/baud
06/24/2004WO2004054194A1 Phase/gain imbalance estimation or compensation
06/24/2004WO2004054193A2 Method and apparatus for scrambling based peak-to-average power ratio reduction without side information
06/24/2004WO2004054164A1 A backward compatible transmitter diversity scheme for use in an ofdm communication system
06/24/2004WO2004054144A1 Null symbol detection device
06/24/2004WO2004054117A2 A Power Line Communication System and Method of Operating the Same
06/24/2004WO2004036737A3 Transmitter
06/24/2004WO2004032443A8 Channel mapping for ofdm frequency-hopping
06/24/2004WO2003077430A3 Method and apparatus for generating frequency-stable wavelets
06/24/2004US20040123224 Method and circuit for controlling the peak power of a filtered signal in a single carrier data transmission system
06/24/2004US20040123212 Edge incremental redundancy memory structure and memory management
06/24/2004US20040121746 Direct conversion receiver
06/24/2004US20040121741 Adaptive controller for linearization of transmitter with impairments
06/24/2004US20040121731 Apparatus and method for an ultra narrow band wireless communications method
06/24/2004US20040121730 Transmission scheme for multi-carrier MIMO systems
06/24/2004US20040120482 System and method for reducing disruption in a DSL environment caused by a pots transient event
06/24/2004US20040120435 Pipeline architecture for multi-slot wireless link processing
06/24/2004US20040120434 Edge incremental redundancy support in a cellular wireless terminal
06/24/2004US20040120428 Adaptive channel estimation for orthogonal frequency division multiplexing systems or the like
06/24/2004US20040120424 Method for making a clear channel assessment in a wireless network
06/24/2004US20040120422 QAM receiver having joint gain, carrier recovery and equalization adaptation system
06/24/2004US20040120418 Wideband digital radio with transmit modulation cancellation
06/24/2004US20040120416 Multiplexing method in a multi carrier transmit diversity system
06/24/2004US20040120414 Method and apparatus for reducing peak to average power ratio in QAM multi-channel blocks
06/24/2004US20040120413 Multi-carrier transmission systems and methods using subcarrier relocation and guard interval insertion
06/24/2004US20040120412 Carrier frequency offset estimation in a wireless communication system
06/24/2004US20040120411 Closed-loop rate control for a multi-channel communication system
06/24/2004US20040120410 Apparatus, and associated method, for effectuating post-FFT correction of fine frequency offset
06/24/2004US20040120409 Impulse response shortening and symbol synchronization in OFDM communication systems
06/24/2004US20040120408 Modulation apparatus/method, demodulation apparatus/method and program presenting medium
06/24/2004US20040120393 Interpolating root nyquist filter for variable rate modulator
06/24/2004US20040120347 Method for adaptively allocating resources in communication system
06/24/2004US20040120304 Digital communication system having improved pilot encoding
06/24/2004US20040120300 System, method and apparatus for parallel information transmission in wireless communication systems
06/24/2004US20040120249 Automatic gain control system for multi-user digital OFDM transmission systems over the electric network
06/24/2004US20040120248 Delta-predicted frequency offset compensation apparatus and method thereof