Patents for H04L 27 - Modulated-carrier systems (89,721)
07/2002
07/10/2002EP1221199A1 Transceiver with local oscillator frequency setting using the demodulated bit rate
07/10/2002EP1221198A1 A simplified digital fir filter for direct sequence spread spectrum communication systems
07/10/2002EP1114524A4 Doppler corrected spread spectrum matched filter
07/10/2002CN1358385A Method and apparatus for frequency offset correction
07/10/2002CN1358367A Method and apparatus for determining transmission mode and synchronization for digital audio broadcasting signal
07/10/2002CN1358001A Device and method of utilizing method filter to estimate phase dat ain communication system
07/10/2002CN1087550C Receiver with sigma-delta analog-to-digital conversion for digital signals buried in TV signals
07/10/2002CN1087543C Digital communication system and receiver for use in such system
07/09/2002US6418558 Hybrid fiber/coax video and telephony communication
07/09/2002US6418300 Method and device for transmitting mixed analog and digital signals by the same transmitter
07/09/2002US6418221 Signal coupler using low voltage filtering
07/09/2002US6418174 Frequency shift key modulator
07/09/2002US6418173 Transmission Apparatus
07/09/2002US6418171 Method for coding and decoding digital data for communication
07/09/2002US6418170 Method and apparatus for achieving 180° phase invariant transmission in a PCM modem system
07/09/2002US6418164 Adaptive equalizer with enhanced error quantization
07/09/2002US6418161 Spread spectrum bit allocation algorithm
07/09/2002US6417977 System for testing and cleaning a removable media drive
07/09/2002US6417834 Arrangement for displaying the signal statuses of a QAM-modulated signal
07/09/2002US6417736 Multiple-voltage supply power amplifier with dynamic headroom control
07/09/2002CA2227162C Cellular mobile telephone system
07/09/2002CA2043645C Carrier wave recovery device with means for preventing false frequency lockings
07/04/2002WO2002052808A1 Radio transmitter, radio receiver, and multilevel modulation communication system
07/04/2002WO2002052807A2 Equalisation and subcarrier suppression
07/04/2002WO2002052806A1 Demodulation of ofdm and td-cdma signals using the same fft hardware
07/04/2002WO2002052805A2 Power cutback configuration of digital subscriber line transceivers using public switched telephone network signaling
07/04/2002WO2002052772A2 Endcoded qam
07/04/2002WO2002052521A2 Radiofrequency receiver for remote meter reading and remote meter reading method comprising same
07/04/2002WO2002052485A1 Improved identification reader
07/04/2002WO2002052419A2 Data communication apparatus
07/04/2002WO2002028046A3 Residual phase error reduction in ofdm
07/04/2002WO2002005505A3 A frequency-domain equalizer for terrestrial digital tv reception.
07/04/2002WO2001099439A3 Adaptive equalisation, in particular for linc processing
07/04/2002WO2001082538A3 Signal amplitude restoration apparatus and method, especially for chaotic signals
07/04/2002US20020088005 Method and system for tiered digital television terrestrial broadcasting services using multi-bit-stream frequency interleaved OFDM
07/04/2002US20020086708 Apparatus and method for OFDM data communications
07/04/2002US20020086707 Wireless communication system using block filtering and fast equalization-demodulation and method of operation
07/04/2002US20020086690 Transmitting apparatus, receiving apparatus, and communication system
07/04/2002US20020086668 Transceiver
07/04/2002US20020086652 PLL circuit and wireless mobile station with that PLL circuit
07/04/2002US20020085653 Beam formation circuit and an apparatus and a method of receiving radio frequency signals making use of a smart antenna
07/04/2002US20020085652 Automatic frequency control unit and spectrum spread receiving apparatus
07/04/2002US20020085651 Removing frequency and timing offsets in digital transmitters and receivers
07/04/2002US20020085647 Radio apparatus having distortion compensating function
07/04/2002US20020085645 Bi-directional wireless communication
07/04/2002US20020085641 Method and system for interference averaging in a wireless communication system
07/04/2002US20020085640 Multi-carrier connection initialisation and symbol transmission
07/04/2002US20020085626 Automatic filter for asymmetric digital subscriber line system
07/04/2002US20020085486 Method and device for transmitting hierarchical data
07/04/2002US20020084814 PLL circuit and wireless mobile satation with that PLL circuit
07/03/2002EP1220506A1 Beam formation circuit and an apparatus and a method of receiving radio frequency signals making use of a smart antenna
07/03/2002EP1220505A2 Use of a pilot tone for clock and carrier recovery in mutlicarrier transmission
07/03/2002EP1220504A1 FSK demodulation
07/03/2002EP1220503A1 Method and circuit for acquisition
07/03/2002EP1220484A2 Transmitting/receiving system
07/03/2002EP1220453A1 PLL circuit with reduced settling time
07/03/2002EP1220441A2 Direct-conversion receiver system and method, especially a GPS receiver system with high pass filtering
07/03/2002EP1219130A1 Method and system for frequency spectrum resource allocation
07/03/2002EP1219086A1 Method for determining the amplitude imbalance at the receiving end and quadrature error in a multi-carrier system
07/03/2002EP1219085A2 Subdimensional single-carrier modulation
07/03/2002EP1219055A2 Device for receiving digital signals and device for transmitting digital signals
07/03/2002EP1219039A1 Device and method for processing a digital data signal in a cdma radio transmitter
07/03/2002EP1219020A1 Wireless transmitter having a modified translation loop architecture
07/03/2002EP1092305B1 Verfahren und vorrichtung zum senden und empfangen von informationssymbolen mittels einer mehrzahl von trägern
07/03/2002CN1357173A Flexibility enhancement to modified fast convolution angorithm
07/03/2002CN1356814A System and method for effectively conducting large-scale fast fourier transform
07/03/2002CN1356799A Method for generating orthogonal spectrum-spreading code in mobile communication system
07/03/2002CN1087120C Direct frequency conversion receiver
07/02/2002US6415133 Acquisition and tracking in communication system with multicarrier telephony transport
07/02/2002US6415005 Digital communication apparatus
07/02/2002US6415004 Phase detector, timing recovery device using the same, and a demodulator using the timing recovery device
07/02/2002US6415002 Phase and amplitude modulation of baseband signals
07/02/2002US6414986 Method and system for radio communication
07/02/2002US6414985 Method for determining reference phase in radio communication system which uses orthogonal M-ary modulation, and coherent detection method using the same
07/02/2002US6414983 Digital communication apparatus
07/02/2002US6414936 Method of estimating carrier frequency offset in an orthogonal frequency division multiplexing system
06/2002
06/27/2002WO2002051102A2 Method of providing high-speed digital services over a switched telephone network
06/27/2002WO2002051091A1 Phase error detection and correction for differential signals
06/27/2002WO2002051090A1 Method of detecting pilot tones in a noisy signal
06/27/2002WO2002051089A2 Multicarrier transmission on an electrical power supply line
06/27/2002WO2002051088A2 Direct phase and frequency demodulation
06/27/2002WO2002051086A2 Estimation and correction of sampling timing error in discrete multitone (dmt) receiver by an iterative process over individual carriers
06/27/2002WO2002051083A1 Quadrature modulator with pulse-shaping
06/27/2002WO2002051024A1 Digital point-to-multipoint data transmission system on an electric network
06/27/2002WO2002051022A1 Radio transmission device and method for aligning parameters thereof
06/27/2002WO2002008864A3 Dynamic link assignment in a communication system
06/27/2002US20020082047 Distributed architecture wireless RF modem
06/27/2002US20020081990 Direct-conversion receiver system and method, especially a GPS receiver system with high pass filtering
06/27/2002US20020081989 Method and apparatus for adjusting reference frequency in receiver and storage medium storing control program therefor
06/27/2002US20020081983 Signal source with multiphase filter
06/27/2002US20020080933 Power cutback configuration of digital subscriber line transceivers using public switched telephone network signaling
06/27/2002US20020080895 Method of receiving information
06/27/2002US20020080893 Portable communication device and method therefor
06/27/2002US20020080892 Demodulator and method for second harmonic cancellation
06/27/2002US20020080891 Base station transmitter having digital predistorter and predistortion method thereof
06/27/2002US20020080887 In-band adjacent-channel digital audio broadcasting system
06/27/2002US20020080885 Combined turbo coding and trellis coded modulation
06/27/2002US20020080884 Variable-rate QAM transceiver
06/27/2002US20020080869 DSL link with embedded control and multi-channel capability
06/27/2002US20020080867 Robust signaling techniques in multicarrier systems