Patents for H04L 27 - Modulated-carrier systems (89,721)
12/2004
12/30/2004US20040264559 Power control method for remotely deployed communication service
12/30/2004US20040264551 Procedure for BPSK modulation with reduced envelope peaking
12/30/2004US20040264549 Delay compensation
12/30/2004US20040264548 Radio transmitting apparatus, radio receiving apparatus and method therefor
12/30/2004US20040264511 Multiplexing octets from a data flow over MPEG packets
12/30/2004US20040264508 Method for transmitting data by multi-carrier modulation
12/30/2004US20040264507 Apparatus and method for transmitting/receiving data in a communication system using a multiple access scheme
12/30/2004US20040264499 Re-mapping trellis encoded data associated with a 2-bit constellation tone to data associated with a pair of 1-bit constellation tones
12/30/2004US20040264442 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
12/30/2004US20040264432 OFDM demodulation method and semiconductor integrated circuit device
12/30/2004US20040264431 Adaptive guard intervals in OFDM systems
12/30/2004US20040264416 Communication system and method for improving efficiency and linearity
12/30/2004US20040264362 Subcarrier puncturing in communication systems
12/30/2004US20040263273 Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
12/30/2004US20040263224 Method for producing a control signal which indicates a frequency error
12/30/2004DE102004024363A1 Verfahren und Anordnung zum Entfernen eines DC-Offsets aus Datensymbolen Method and apparatus for removing a DC offset of data symbols
12/29/2004WO2004114618A1 A modulation method using hard decision for quadrature amplitude modulation and an apparatus thereof
12/29/2004WO2004114617A1 Narrowband interference suppression for ofdm systems
12/29/2004WO2004114616A1 A demodulation method using soft decision for quadrature amplitude modulation and apparatus thereof
12/29/2004WO2004114615A1 Apparatus and method for estimating a channel in a multiple input transmission system
12/29/2004WO2004114610A1 Radio packet communication method
12/29/2004WO2004114580A1 Bit swapping for different interleaving depths
12/29/2004WO2004114566A1 Reducing adjacent channel interference in a multicarrier modulation system
12/29/2004WO2004114564A1 Apparatus and method for transmitting/receiving data in a communication system using a multiple access scheme
12/29/2004WO2004114560A2 Generating a spectrally efficient root raised cosine pulse
12/29/2004WO2004114559A2 A system and method for generating a modified iota pulse for reducing adjacent channel interference (aci)
12/29/2004WO2004114558A2 A system and method for generating a root raised cosine orthogonal frequency division multiplexing (rrc ofdm) modulation
12/29/2004WO2004114548A1 Transmission apparatus and method for use in mobile communication system based on orthogonal frequency division multiplexing scheme
12/29/2004WO2004114518A1 Cartesian loop transmitter and method of adjusting an output level of such transmitter
12/29/2004WO2004095729A3 Multi-carrier signal designed to reduce cell interferences in a radiocommunication network, corresponding receiver, transmitter, construction method and reception method
12/29/2004WO2004095082A3 Method and apparatus for reducing interference in an optical data stream using data­independent equalization
12/29/2004WO2003081866A8 Transmission of digital information, whereby the code words are differentiated by means of a change in amplitude
12/29/2004EP1492294A2 Adaptive modulation and coding based on second order statistics
12/29/2004EP1492293A1 Emission of a signal with reduced peaks and of an associated instruction signal
12/29/2004EP1492292A1 Methods and systems for digital data transmission
12/29/2004EP1492291A1 System and method of converting signals with phase-shift-keying (psk) modulation into signals with amplitude-shift-keying (ask) modulation
12/29/2004EP1492280A1 Quality driven adaptive channel assignment in an OFDMA radio communication system
12/29/2004EP1492264A1 Apparatus and method for automatic frequency control in a mobile communication terminal
12/29/2004EP1492263A1 Radio communication apparatus and communication mode control method of a mobile communication system
12/29/2004EP1492261A1 Power control method for remotely deployed communication service
12/29/2004EP1492259A1 Ofdm demodulation apparatus
12/29/2004EP1492258A1 Method of data retransmission in multi-carrier transmission and communication apparatus having data retransmission control device
12/29/2004EP1491068A1 Method for dynamic determination of time constants, method for level detection, method for compressing an electric audio signal and hearing aid, wherein the method for compression is used
12/29/2004EP1491065A1 Soft handoff for ofdm
12/29/2004EP1490994A1 A system and method of dynamically optimizing a transmission mode of wirelessly transmitted information
12/29/2004EP1490985A1 Apparatus and method for transmitting signal in mobile communication system
12/29/2004EP1490962A1 Demodulation of a digitally frequency modulated analogue received signal by evaluation of the time difference between the null transitions
12/29/2004EP1490705A1 Determination of a composite peak position in the presence of a doppler shift
12/29/2004EP1198897A4 Crest factor compensated driver
12/29/2004EP0944973B1 Method for suppressing interference signals during transmission of digital signals
12/29/2004CN1559129A Single-carrier to multi-carrier wireless architecture
12/29/2004CN1559114A 正交频分复用传输方法 Orthogonal frequency-division multiplexing transmission method
12/29/2004CN1558577A Orthogonal frequency division multiplexing modulation-demodulation method in broadband wireless access networks
12/29/2004CN1558560A Downward compatible AM broadcast digitalized transmission method
12/29/2004CN1182688C Cellular communication system and operating method thereof
12/29/2004CN1182653C Quadrature oscillator network for transmitter
12/29/2004CA2701502A1 Wireless packet communication method
12/29/2004CA2701501A1 Wireless packet communication method
12/29/2004CA2525883A1 Bit swapping for different interleaving depths
12/28/2004USRE38678 Method and apparatus for synchronizing a data communications system to a periodic digital impairment
12/28/2004US6836646 Circuit and method for compensating for non-linear distortion
12/28/2004US6836520 Method and apparatus for establishing synchronization with a synchronization signal
12/28/2004US6836519 Automatic digital scaling for digital communication systems
12/28/2004US6836518 Synchronization control method for receiver apparatus of data transmission system utilizing orthogonal frequency division multiplex, and data transmission system
12/28/2004US6836517 Distortion compensating apparatus
12/28/2004US6836515 Multi-modulation radio communications
12/28/2004US6836510 DSL link with scaleable performance
12/28/2004US6836505 Spreading code generation apparatus and CDMA receiver
12/28/2004US6836227 Digitizer module, a waveform generating module, a converting method, a waveform generating method and a recording medium for recording a program thereof
12/28/2004US6836181 FSK demodulation system
12/28/2004CA2297871C Dmt test method for determining adsl capability of cables
12/28/2004CA2239888C Data comparison agc system for vsb receiver
12/23/2004WO2004112300A2 Systems and methods for a wireless network connection point locator
12/23/2004WO2004112292A1 Apparatus and method for transmitting and receiving a pilot pattern for identification of a base station in an ofdm communication system
12/23/2004WO2004112291A1 Digital signal receiver
12/23/2004WO2004112286A1 Optical transmission system; and transmitter, receiver and signal level adjustment method for use therein
12/23/2004WO2004112273A1 Method enabling multiple communication nodes to access a transmission means on an electrical grid
12/23/2004WO2004112235A2 Method and system for transmitting signals with reduced spurious emissions
12/23/2004WO2004112075A1 Multi-carrier communication method and communication apparatus thereof
12/23/2004WO2004064295A3 Pilot transmission schemes for wireless multi-carrier communication systems
12/23/2004WO2004044897A3 Single clock data communication in direct stream digital system
12/23/2004WO2004014008A3 Carrier frequency offset estimation in a wireless communication system
12/23/2004US20040261122 Demodulator circuit for digital television and demodulation method
12/23/2004US20040261003 16 QAM and 16 APSK TTCM (Turbo Trellis Coded Modulation) with minimum bandwidth of 3 bit/s/Hz using a rate 2/4 constituent encoder
12/23/2004US20040259508 Communication method and radio communication apparatus
12/23/2004US20040258184 Equalization and decision-directed loops with trellis demodulation in high definition TV
12/23/2004US20040258183 High speed circuits for electronic dispersion compensation
12/23/2004US20040258181 Differential receiver circuit with electronic dispersion compensation
12/23/2004US20040258180 Timing recovery using the pilot signal in high definition TV
12/23/2004US20040258179 RF receiver and method for region specific data selection
12/23/2004US20040258177 Multi-dimensional space Gray code maps for multi-dimensional phase modulation as applied to LDPC (Low Density Parity Check) coded modulation
12/23/2004US20040258175 Method and arrangement for limiting signal in radio transmitter
12/23/2004US20040258173 M-Ary phase shift keying (PSK) bit-boundary turbo coded system
12/23/2004US20040258171 OFDM receiver apparatus
12/23/2004US20040258170 Apparatus and method for de-interleaving the interleaved data in a coded orthogonal frequency division multiplexing receiver
12/23/2004US20040258169 Modulation/demodulation apparatus using matrix and anti-matrix
12/23/2004US20040258146 Time domain equalization for discrete multi-tone systems
12/23/2004US20040258145 Differential receiver circuit with electronic dispersion compensation for optical communications systems
12/23/2004US20040258142 Fast initialization using seamless rate adaptation
12/23/2004US20040258134 Transmission apparatus and method for use in mobile communication system based on orthogonal frequency division multiplexing scheme