Patents for H04L 27 - Modulated-carrier systems (89,721)
04/2006
04/04/2006US7024608 Transmitting method and transmitting apparatus
04/04/2006US7024185 Method and system for operating a field programmable line card using a country coded template
04/04/2006US7023940 Demodulation and synchronization establishment apparatus
04/04/2006US7023938 Receiver for discrete multitone modulated signals having window function
04/04/2006US7023937 Receiver window design for multicarrier communication systems
04/04/2006US7023936 Method and apparatus for decoding lattice codes and multilevel coset codes
04/04/2006US7023935 Trellis based maximum likelihood signal estimation method and apparatus for blind joint channel estimation and signal detection
04/04/2006US7023933 Radio communication apparatus
04/04/2006US7023932 Modulation compression method for the radio frequency transmission of high speed data
04/04/2006US7023930 Reducing the crest factor of a multicarrier signal
04/04/2006US7023929 Digital pre-compensation filter for DMT type transmitter
04/04/2006US7023928 Synchronization of a pilot assisted channel estimation orthogonal frequency division multiplexing system
04/04/2006US7023908 DSL transmission system with far-end crosstalk compensation
04/04/2006US7023905 Correlation and demodulation circuit for a receiver for signals modulated by a specific code
04/04/2006US7023898 Accelerated method of detection by spheres
04/04/2006US7023897 Transmission circuit
04/04/2006US7023875 Telecommunications system and subscriber equipment therefor
04/04/2006US7023324 Power-line carrier communication apparatus
04/04/2006US7023292 Polar modulation using amplitude modulated quadrature signals
04/04/2006US7023286 Systems and methods for self-calibration
04/04/2006US7023273 Architecture and implementation methods of digital predistortion circuitry
03/2006
03/30/2006WO2006034020A1 Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling
03/30/2006WO2006033428A1 Wireless communication apparatus and wireless communication method
03/30/2006WO2006033059A1 A radio communication system, a radio station, and a method of transmitting data
03/30/2006WO2006032768A1 Method for estimating the phase and the gain of observation data transmitted over a qam-modulated transmission channel
03/30/2006WO2006032527A1 Resonant circuit arrangement, method for operating said resonant circuit arrangement and method for the operation and use thereof
03/30/2006WO2005122459A3 Transmitting signals via at least two channels simultaneously
03/30/2006WO2005109625A3 Integrated analog video receiver
03/30/2006WO2005076725A3 Multiple user adaptive modulation scheme for mc-cdma
03/30/2006US20060068745 Combined automatic frequency correction and time track system to minimize sample timing errors
03/30/2006US20060068724 Radio transmitting apparatus, radio receiving apparatus, and M-ary modulation communication system
03/30/2006US20060067515 Line driver for coupling a data transceiver to a line
03/30/2006US20060067447 Receiving apparatus in communication system
03/30/2006US20060067439 Frequency control apparatus, wireless communication apparatus and frequency control method
03/30/2006US20060067438 Detector for clock phase and carrier phase
03/30/2006US20060067437 Wireless communication system and method with frequency burst acquisition feature using autocorrelation
03/30/2006US20060067434 Method and apparatus for providing iterative timing recovery
03/30/2006US20060067433 Frequency-shift-keying demodulator and method of frequency-shift-keying
03/30/2006US20060067432 Frame-based carrier frequency and phase recovery system and method
03/30/2006US20060067431 Circuit and method for recovering a carrier
03/30/2006US20060067429 Low-if multiple mode transmitter front end and corresponding method
03/30/2006US20060067427 Architectural techniques for envelope and phase signal alignment in RF polar transmitters using power amplifier feedback
03/30/2006US20060067423 Low power radio transmitter using pulse transmissions
03/30/2006US20060067422 Modulation for broadcasting from multiple transmitters
03/30/2006US20060067414 Envelope stabilization method and apparatus
03/30/2006US20060067413 Multicode transmission using Walsh Hadamard transform
03/30/2006US20060067412 Multicarrier receivers and methods for detecting cyclic prefixes having unknown lengths
03/30/2006US20060067411 Method and apparatus to interleave bits across symbols from different constellations
03/30/2006US20060067278 Communication system using OFDM for one direction and DSSS for another direction
03/30/2006US20060067207 Radio communication apparatus and radio transmission method
03/30/2006DE102005010622B3 Frequency modulation and frequency sampling circuit has two similar circuit blocks containing flipflops and difference integrators and comparators
03/30/2006CA2730327A1 Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling
03/30/2006CA2580547A1 Multi-equalization method and apparatus
03/29/2006EP1641206A2 Semi-blind channel estimation using sub-carriers with lower modulation order in an OFDM system
03/29/2006EP1641205A2 Apparatus und method for carrier recovery
03/29/2006EP1641174A2 Method and system for variable state length initialization for DSL systems
03/29/2006EP1641173A1 Multi-carrier modem transmitter with controlled transmit signal quality degradation for improving stability of operation
03/29/2006EP1641160A1 Radio transmitter apparatus and modulation scheme selecting method
03/29/2006EP1641158A1 Multi-carrier radio transmission system, transmission device, and reception device
03/29/2006EP1641137A1 Method enabling multiple communication nodes to access a transmission means on an electrical grid
03/29/2006EP1641136A1 Cable interface for data and power supply
03/29/2006EP1639837A2 Unbiased signal to interference ratio in wireless communications devices and methods therefor
03/29/2006EP1639776A1 Methods and apparatus for backwards compatible communication in a multiple antenna communication system using time orthogonal symbols
03/29/2006EP1639775A1 Faster fine timing operation in multi-carrier system
03/29/2006EP1639774A1 Method and apparatus for receiving digital multicarrier signals using a wavelet transform
03/29/2006EP1639738A2 Signal constellations for multi-carrier systems
03/29/2006EP1639728A1 Optical transmission system with gain control for reduction of spurious signal components
03/29/2006EP1639700A1 Cartesian loop transmitter and method of adjusting an output level of such transmitter
03/29/2006EP1224730B1 Fsk demodulator using a frequency conversion stage with three parallel mixers
03/29/2006EP1082818B1 Multiple waveform software radio
03/29/2006CN2768314Y RF circuit with stack printed circuit board
03/29/2006CN1754363A Automatic frequency control circuit and automatic frequency control method
03/29/2006CN1754337A Receiver and method of receiving a multichannel optical signal
03/29/2006CN1754336A Radio communication system and radio communication method
03/29/2006CN1754319A Sub-banded ultra-wideband communication system
03/29/2006CN1753493A Cross-layer connecting method for wireless multimedia communication system
03/29/2006CN1753399A Ultra wide band radio communication method based on bicarrier and its device
03/29/2006CN1753398A Enhanced method for demodulating constant-amplitude multi-code biorthogonal modulation signals
03/29/2006CN1753397A Transmission method of training symbol and synchronization method
03/29/2006CN1753396A Signal to noise ratio measuring method of orthogonal frequency division multiplexing signal in mobile communication environment
03/29/2006CN1753395A Symbol timing method for multi-antenna wireless communication system
03/29/2006CN1753394A Method of improving despreading spectrum of OFDM system synchronization performance
03/29/2006CN1753393A Automatic frequency control system in receiver
03/29/2006CN1248474C Receiving system for OFDM
03/29/2006CN1248473C Transmitter
03/29/2006CN1248444C Multipunctured FEC technique
03/29/2006CN1248439C Method for realizing frequency synchronization in orthogonal FDM system
03/29/2006CN1248438C Transmitting / receiving device and transmitting / receiving method
03/29/2006CN1248437C Satellite live telecast system
03/29/2006CN1248420C Method for differentiating mobile transmitter in multichannel access linear FM communication system
03/29/2006CN1248417C System and method of implementing a wireless communication system using a reconfigurable chip with a reconfigurable fabric
03/28/2006US7020829 Method and system for decoding low density parity check (LDPC) codes
03/28/2006US7020674 Device and method for performing multiple modulus conversion using inverse modulus multiplication
03/28/2006US7020492 Radio
03/28/2006US7020459 Receiver
03/28/2006US7020444 High frequency semiconductor integrated circuit and radio communication system
03/28/2006US7020286 Modulation of dynamical systems for communication
03/28/2006US7020276 Frequency sensitive inductance device in POTS splitter design
03/28/2006US7020225 Frequency searcher and frequency-locked data demodulator using a programmable rotator
03/28/2006US7020224 Ultra-wideband correlating receiver