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)
09/2003
09/11/2003US20030169807 Method for transmitting an analog data stream with sampling rate increase in the data stream transmitter, and a circuit arrangement for carrying out this method
09/11/2003US20030169806 Dynamic hybrid switching in a wireline modem
09/11/2003US20030169722 Frame structure for radio communications system
09/11/2003US20030169711 Wireless LAN receiver synchronization
09/11/2003US20030169682 Multicarrier systems
09/11/2003US20030169681 Multi-carrier communications with group-based subcarrier allocation
09/11/2003US20030169658 Information storage medium, information recording apparatus, and information playback apparatus
09/11/2003US20030169189 Robust system for transmitting and receiving map data
09/11/2003US20030169102 Method and apparatus for demodulating data
09/11/2003CA2375823A1 Improved equalization scheme for adsl receivers in presence of an under-sampled or over-sampled transmit ifft
09/10/2003EP1343285A1 Soft value calculation for multilevel signals
09/10/2003EP1343264A1 Diversity receiver, and method for receiving orthogonal frequency division multiplex signal
09/10/2003EP1343255A2 Code division multiple access communication system
09/10/2003EP1342353A1 Method for estimating the channel properties in a communication system
09/10/2003EP1264395B1 Improved method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio
09/10/2003EP1201066B1 Phase noise and additive noise estimation in a qam carrier recovery circuit
09/10/2003EP1197064B1 Adsl system for transmission of voice and data signals
09/10/2003CN1441600A Data mapping method in digital TV transmiision
09/10/2003CN1441562A Interface method between control layer and physical layer of orthogonal frequency-division multiplexing communication system
09/10/2003CN1121096C Decoder having gain controller in mobile communication system and its gain controlling method
09/10/2003CN1121095C Interleaving device and method for communication system
09/09/2003US6618458 Method and apparatus for signal receiving synchronization
09/09/2003US6618454 Diversity coded OFDM for high data-rate communication
09/09/2003US6618452 Burst carrier frequency synchronization and iterative frequency-domain frame synchronization for OFDM
09/09/2003US6618451 Efficient reduced state maximum likelihood sequence estimator
09/09/2003US6618450 Receiving apparatus and receiving method
09/09/2003US6618352 Modulator, demodulator, and transmission system for use in OFDM transmission
09/09/2003US6618096 System and method for adaptively balancing quadrature modulators for vestigial-sideband generation
09/09/2003US6617917 Caller-ID demodulation apparatus and method using multiple thresholds
09/09/2003US6617839 Method for detecting current transformer saturation
09/09/2003CA2270774C Multi-carrier transmission with bit rate variation in a noise environment
09/09/2003CA2243133C S/n measuring circuit and method, transmitting electric power control apparatus and digital communicating system
09/04/2003WO2003073718A1 Demodulating apparatus and demodulating method
09/04/2003WO2003073717A1 Method and apparatus for timing synchronization in a multicarrier system
09/04/2003WO2003073716A1 Radio receiving apparatus, method for determining modulation scheme, and method for determining coding scheme
09/04/2003WO2003073683A1 Method and system for receiving a multi-carrier signal
09/04/2003WO2003073682A1 Ofdm signal selection systems
09/04/2003WO2003073670A1 Communication device used in cdma
09/04/2003WO2003073669A1 Radio communicating method, radio transmitting apparatus, and radio receiving apparatus
09/04/2003WO2003073661A2 3g radio
09/04/2003WO2003073660A2 3g radio
09/04/2003WO2003073659A2 3g radio
09/04/2003WO2003073646A1 Multiple-input, multiple-output (mimo) systems with multiple transmission modes
09/04/2003WO2003073636A1 3g radio
09/04/2003WO2003073601A2 Method for adjusting a two-level modulator and two-level modulator with an adjusting device
09/04/2003WO2003073219A2 Method and apparatus for sumultaneously transmitting video, sound, data and ordinary telephone service, bidirectionally over an ordinary twisted pair
09/04/2003WO2003028329A3 Single-carrier and multicarrier receiver architecture
09/04/2003WO2003028255A3 Method and apparatus for data transfer using a time division multiple frequency scheme
09/04/2003WO2003003589A3 Download booster for adsl transmission
09/04/2003WO2002015387A3 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
09/04/2003US20030167433 Hybrid ARQ retransmission method with reduced buffer size requirement and receiver therefor
09/04/2003US20030167291 Device and method for performing multiple modulus conversion using inverse modulus multiplication
09/04/2003US20030166395 Method and system for blind detection of modulation type
09/04/2003US20030165204 Dtse at less than two complex samples per symbol
09/04/2003US20030165203 Quadrature gain and phase imbalance correction in a receiver
09/04/2003US20030165202 I/Q demodulator and I/Q signal sampling method thereof
09/04/2003US20030165200 Method and apparatus for simultaneously retrieving portions of a data stream from different channels
09/04/2003US20030165188 Activation of multiple xDSL modems with implicit channel probe
09/04/2003US20030165187 System and Method for Joint Maximal Ratio Combining Using Time-Domain Based Signal Processing
09/04/2003US20030165184 M-ary orthogonal coded communications method and system
09/04/2003US20030165159 Method for compensating for peak values during a data transmission with discrete multitone symbols and a circuit arrangement for carrying out the method
09/04/2003US20030165120 Packet transmission system and packet transmission method
09/04/2003US20030165113 OFDM communications system
09/04/2003US20030165112 Communication system and method
09/04/2003US20030164781 Forward link text compression in satellite messaging
09/04/2003US20030164751 System for the transmission of data from a data carrier to a station by means of one or at least one other auxiliary carrier signal
09/03/2003EP1341354A1 Synchronizing method and device
09/03/2003EP1341340A2 Activation of multiple xDSL modems with implicit channel probe
09/03/2003EP1341339A2 Activation of multiple xDSL modems with implicit channel probe
09/03/2003EP1341338A2 Activation of multiple xDSL modems with implicit channel probe
09/03/2003EP1341337A2 Activation of multiple xDSL modems with implicit channel probe
09/03/2003EP1341332A1 Data transmission method and apparatus
09/03/2003EP1341331A1 Time equalizing method and device
09/03/2003EP1341327A1 Ofdm signal transmission system, mobile terminal and electronic commerce system
09/03/2003EP1341310A1 Apparatus and method for encoding of information and apparatus and method for decoding of encoded information
09/03/2003EP1340349A2 Method and apparatus for adjusting the phase of a received signal
09/03/2003EP1340348A1 Method and apparatus for increasing the quality of the receiver synchronization of qam or cap modulated modem connection
09/03/2003EP1340347A1 Synchronous parallel acoustic transmission in transtelephonic medical monitors
09/03/2003EP1340335A2 Space-time turbo trellis coding arrangement and method thereof
09/03/2003EP1340331A1 Methods and apparatus for turbo space-time trellis coding
09/03/2003EP1340319A2 Receiver circuit
09/03/2003EP1027779A4 Rapidly decorrelating spreading sequences for ds-cdma transceivers
09/03/2003EP0923821B1 Improvements in, or relating to, multi-carrier transmission systems
09/03/2003CN2571079Y Network for recognizing user facility resource pre-saving setting protocol capacity using conversation sponsor protocol
09/03/2003CN2571078Y Network for recognizing user facility resource pre-saving setting protocol capacity using conversation sponsor protocol
09/03/2003CN1440603A Method and device for generating signal having predetermined quality criterion for use in or on communication system
09/03/2003CN1440588A 无线电接收机 Radio receiver
09/03/2003CN1440509A Method and apparatus for compensating local oscillator frequency error
09/03/2003CN1440198A Program information guide forming method
09/03/2003CN1440153A Mixed automatically repeating inquiry fascimile method with reduced cache size
09/03/2003CN1440147A CDMA multiple-carrier receiving systems
09/03/2003CN1440146A Device and method for repeating high-speed data in CDMA mobile communication system
09/03/2003CN1440139A VSB/QAM compatible frequency balancer
09/03/2003CN1440138A Compatible VSB/QAM multipurpose channel balancer
09/03/2003CN1440135A Method for reducing interferes between sub-carriers in multi-carrier communication system and receiver therefor
09/03/2003CN1120604C Receiver for digital audio broadcasting signals
09/03/2003CN1120602C Method and device for fine frequency synchronization in multi-carrier demodulating system
09/03/2003CN1120571C Method and apparatus for estimating frequency offset
09/03/2003CN1120546C VHF/UHF self-tuning planar antenna system
09/02/2003US6615060 Communication device effectively controlling power supply, method of controlling power supply, and medium
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