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)
06/2003
06/04/2003EP0759236B1 Band power echo reducer for multifrequency signal detectors
06/04/2003CN1422479A Multilevel modulating method, multilevel demodulating method and multi level modulating/demodulating method
06/04/2003CN1422478A Digital modulation system, radio communication system, radio communication device
06/04/2003CN1422021A Apparatus and method for transmitting/receiving of group retransmission in mobile communication system
06/04/2003CN1422019A Satellite live telecast system
06/04/2003CN1422018A Satellite live telecast system
06/04/2003CN1110933C Digital demodulator
06/04/2003CN1110916C Point-multi-point radio transmission system
06/03/2003US6574796 Fast and reliable data carrier detection by a cable modem in a cable television plant
06/03/2003US6574468 Calling number delivery system
06/03/2003US6574292 Automatic gain control methods and apparatus suitable for use in OFDM receivers
06/03/2003US6574287 Frequency/Phase comparison circuit with gated reference and signal inputs
06/03/2003US6574286 Modulation system having on-line IQ calibration
06/03/2003US6574285 128-ary signal constellations suitable for non-linear amplification
06/03/2003US6574284 Bit encoding system and method
06/03/2003US6574283 Communication method, transmission and reception apparatuses, and cellular radio communication system
06/03/2003US6574282 Multi-carrier transmission system, transmission unit and transmission method
06/03/2003US6573948 Equalizing intermediate-frequency signals before demodulating them in a digital television receiver
06/03/2003US6573864 Receiver
05/2003
05/30/2003WO2003045043A1 High performance micro-filter and splitter apparatus
05/30/2003WO2003045027A1 Radio reception apparatus, signal processing timing control method, and signal processing timing control program
05/30/2003WO2003045026A1 Radio reception apparatus, symbol timing control method, and symbol timing control program
05/30/2003WO2003045025A1 Transmission apparatus, reception apparatus, transmission method, and reception method
05/30/2003WO2003045002A1 Apparatus and method for symbol combining in a mobile communication system
05/30/2003WO2003045001A1 Method and apparatus for determining modulation scheme for retransmission in a communication system
05/30/2003WO2003044983A2 Spectral processor for cdma receiver
05/30/2003WO2003024048A3 Hierarchical modulation
05/30/2003WO2003019811A3 Data streaming method and apparatus using adaptive transmission scheduling
05/30/2003WO2003013093A3 Signal decomposition for the control of its dynamic range
05/30/2003WO2003007564A3 Multi-channel communications transreceiver
05/30/2003WO2003003684A3 Modulation scheme for tetra systems
05/30/2003WO2002058250A3 Carrier phase recovery system for adaptive burst modems and link hopping radio networks
05/30/2003WO2002041545A9 Wireless clock synchronization
05/30/2003CA2434806A1 Apparatus and method for symbol combining in a mobile communication system
05/29/2003US20030101411 Decoding method and communication device
05/29/2003US20030100286 Direct conversion of narrow-band RF signals
05/29/2003US20030100283 Frequency acquisition and locking detection circuit for phase lock loop
05/29/2003US20030099359 Method and apparatus for data scrambling/descrambling
05/29/2003US20030099317 Alternate timing signal for a vestigial sideband modulator
05/29/2003US20030099314 Boundary detection using multiple correlations
05/29/2003US20030099313 Filter bank and receiver for processing continuous phase modulated signals
05/29/2003US20030099312 Boundary detection using multiple correlations
05/29/2003US20030099310 Method for correcting DC offsets in a receiver
05/29/2003US20030099308 Trellis based maximum likelihood signal estimation method and apparatus for blind joint channel estimation and signal detection
05/29/2003US20030099302 System and mehod for reducing the peak power in multi-carrier modulation
05/29/2003US20030099299 Method and apparatus for data transfer using a time division multiple frequency scheme
05/29/2003US20030099206 Method and arrangement for automatic frequency correction
05/29/2003US20030098806 Rejecting interference for simultaneous received signals
05/29/2003US20030098752 Corrective phase quadrature modulator system and method
05/29/2003US20030098734 Fully integrated offset compensation feedback circuit
05/28/2003EP1315345A1 Method and apparatus for block equalization with adaptation to the transmission channel
05/28/2003EP1315308A1 Method and device of tracking BOC (Binary Offset Carrier) modulated radionavigation signals
05/28/2003EP1315284A1 Direct-conversion transmitting circuit and integrated transmitting/receiving circuit
05/28/2003EP1314289A1 Estimation and removal of intersymbol interference in multicarrier signals
05/28/2003EP1314288A2 Constrained-envelope transmitter and method therefor
05/28/2003EP1110356A4 Feher keying (fk) modulation and transceivers including clock shaping processors
05/28/2003EP1068666B1 Hybrid chireix/doherty amplifiers power waveform synthesis
05/28/2003EP0923824B1 Improvements in, or relating to, control channels for telecommunications transmission systems
05/28/2003EP0888681B1 Balanced transversal i,q filters for quadrature modulators
05/28/2003EP0709001A4 Modulator having direct digital synthesis for broadband rf transmission
05/28/2003CN1421087A Center-of-gravity control for hierarchical QAM transmission systems
05/28/2003CN1421086A Error detection/correction coding for hierarchical QAM transmission systems
05/28/2003CN1421074A Channel encoding and decoding method and apparatus
05/28/2003CN1421071A Method and apparatus for reducing pilot search times utilizing mobile station location information
05/28/2003CN1420667A Apparatus and method for effective transmitting and receiving multipoint sending data
05/28/2003CN1420648A OFDM demodulating method and OFDM demodulator
05/28/2003CN1420647A Receiver of quadrature frequency division multiplexing system
05/28/2003CN1420444A Transmitting and receiving apparatus and method, program and recording medium and transmitting/receiving system
05/28/2003CN1110180C 接收机 Receiver
05/28/2003CN1110179C Digital radio receiver
05/28/2003CN1110177C Device for correcting phase noise in digital receiver
05/28/2003CN1110176C Apparatus for demodulating and decoding video signals
05/28/2003CN1110175C AGC circuit and method for digital TV receiver
05/28/2003CN1110149C Double-band data communication apparatus
05/28/2003CN1110148C Equalizing method and equalizer for OFDM receiver
05/27/2003US6571090 Radio receiver and diversity receiver
05/27/2003US6571088 Automatic frequency control circuit
05/27/2003US6570946 One-hot decoded phase shift prescaler
05/27/2003US6570943 Method for equalization of complementary carriers in an AM compatible digital audio broadcast system
05/27/2003US6570941 Receiver and phase extraction circuit
05/27/2003US6570938 Method and apparatus for recovering data symbols from a signal received by a radio communication device
05/27/2003US6570937 Frequency scanning FSK receiver
05/27/2003US6570936 Frequency error estimation method and system for a QPSK demodulator
05/27/2003US6570935 Method and system for demodulating a receive signal including a pilot signal
05/27/2003US6570933 Method in digital quadrature modulator and demodulator, and digital quadrature modulator and demodulator
05/27/2003US6570932 Calculation and verification of transmit power levels in a signal point transmission system
05/27/2003US6570931 Switched voltage adaptive slew rate control and spectrum shaping transmitter for high speed digital transmission
05/27/2003US6570929 Power control scheme for maximizing carrier signal-to-noise ratio in multicarrier transmitters
05/27/2003US6570914 Amplitude calculation circuit
05/27/2003US6570912 Hybrid software/hardware discrete multi-tone transceiver
05/27/2003US6570910 Baseband processor with look-ahead parameter estimation capabilities
05/27/2003US6570907 Simplified finite impulse response (FIR) digital filter for direct sequencespread spectrum communication
05/27/2003US6570441 Incoherent demodulator and method of incoherently demodulating an IF signal
05/27/2003CA2258009C Dsp implementation of a cellular base station receiver
05/23/2003CA2412147A1 Process and device for block equalization with adaptation to transmission channel
05/23/2003CA2412136A1 Process and device for the calculation of the discriminating function of module signals with one or more sub-carriers
05/22/2003WO2003043284A2 Slicer circuit with ping pong scheme for data communication
05/22/2003WO2003043283A1 A quadrature amplitude modulation method used in the digital mobile communication system
05/22/2003WO2003043282A1 Method and system for estimating frequency offset for carrier-modulation digital communications system
05/22/2003WO2003043262A1 Method and system for spectrally compatible remote terminal adsl deployment
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