Patents for H04L 27 - Modulated-carrier systems (89,721)
05/1999
05/11/1999US5903555 Modulation method and system using constant envelope ODSCDMA with low out-of-band emissions for non-linear amplification
05/11/1999US5903546 Means and method of improving multiplexed transmission and reception by coding and modulating divided digital signals
05/11/1999US5903231 System for encoding base N data using a multi-level coding scheme
05/11/1999US5903186 Demodulator of MSK signal
05/11/1999CA2119983C Communication system
05/11/1999CA2106919C Communication system
05/07/1999CA2248507A1 Direct sequence spread spectrum modulated uplink for modulated backscatter systems
05/06/1999WO1999022473A1 An analog technique to detect asymmetric radio frequency pulses
05/06/1999WO1999022457A1 Parallel correlator architecture for synchronizing direct sequence spread-spectrum signals
05/06/1999WO1999022443A1 Technique for recovering an amplitude modulated carrier
05/06/1999WO1999011024A3 Local communication system and apparatus for use therein
05/06/1999EP0913973A2 Method and system for joint timing recovery and channel estimation for DMT modems
05/06/1999EP0913972A2 Multicarrier radio communication system
05/06/1999EP0913963A2 Timing phase synchronization detecting circuit and demodulator
05/06/1999EP0913950A2 Composite trellis system and method
05/06/1999EP0913936A2 Communication system with frequency control circuit
05/06/1999EP0913043A2 Blind dfe and phase correction
05/06/1999EP0778996B1 Process and device for reshaping pairs of signals
05/06/1999EP0705513B1 Digital signal demodulation method and device
05/06/1999EP0669068A4 Method and apparatus for operating with a hopping control channel in a communication system.
05/06/1999DE19802398C1 Signal processing for COFDM receiver
05/06/1999CA2252241A1 Method and apparatus for fast recovery from loss of lock in a phase locked loop
05/05/1999CN1216186A Method for transmitting digital signals and correlated transmitter and receiver
05/05/1999CN1216185A Pilot-symbol-assisted radiotelephone communications
05/05/1999CN1215949A CDMA receiving apparatus
05/04/1999US5901346 Method and apparatus utilizing a compensated multiple output signal source
05/04/1999US5901188 In a data receiver circuit
05/04/1999US5901185 Systems and methods for data-augmented, pilot-symbol-assisted radiotelephone communications
05/04/1999US5901184 Extended range voltage controlled oscillator for frequency synthesis in a satellite receiver
05/04/1999US5901180 Frame synchronization in multicarrier transmission systems
05/04/1999US5901179 Waveform shaping method and equipment
05/04/1999US5901135 For processing a data signal for transmission
05/04/1999CA2107769C Multi-level symbol synchronizer
05/04/1999CA2012914C Trellis precoding for modulation systems
05/03/1999CA2251505A1 Method and system for joint timing recovery and channel estimation for dmt modems
04/1999
04/30/1999CA2220781A1 Millimeter wave transceiver for point-to-multipoint communications system
04/29/1999WO1999021334A1 Radio communication device and radio communication method
04/29/1999WO1999021299A1 Method and apparatus for generating complex four-phase sequences for a cdma communication system
04/29/1999WO1999007122A9 Biphase modulator with balun design
04/29/1999DE19752206C1 Wideband phase shift circuit for IQ modulator
04/29/1999DE19746507A1 Method for recognition of form of modulation used with a reception signal
04/29/1999DE19746506A1 Method for recognition of form of modulation used with a reception signal
04/28/1999EP0912023A1 Demodulation and equalisation of multicarrier signals
04/28/1999EP0912022A2 Digital fsk demodulator
04/28/1999EP0912010A1 Phase locked loop for a receiver of digitally transmitted signals
04/28/1999EP0911976A1 Analog/digital conversion device with sample-and-hold circuit
04/28/1999EP0911962A1 Cable modem tuner
04/28/1999EP0911633A1 A method of identifying agonists and antagonists for tumor necrosis related receptors TR1, TR3 and TR5
04/28/1999EP0910913A1 Method and apparatus for compensating for a varying d.c. offset in a sampled signal
04/28/1999EP0910894A1 Method and apparatus for reducing intermodulation distortion in digital wideband transmission systems
04/28/1999CN1215520A Coherent modulation of CPM signals
04/28/1999CN1215511A Method and circuit arrangement for reducing offset voltage of a signal
04/28/1999CN1215261A Double-mode demodulator
04/27/1999US5898761 Communication server apparatus using digital signal switching and method
04/27/1999US5898739 QPSK demodulator for obtaining phase by arithmetic operation
04/27/1999US5898738 Modulation, demodulation and antenna coupling circuits used in IC card reading/writing apparatus, and method of supplying power to the IC card
04/27/1999US5898737 Adaptive digital symbol recovery for amplitude phased keyed digital communication systems
04/27/1999US5898734 Symbol determining method and apparatus
04/27/1999US5898710 Implied interleaving, a family of systematic interleavers and deinterleavers
04/27/1999US5898699 Digital broadcast receiver and signal level display method
04/27/1999US5898338 Adaptive digital predistortion linearization and feed-forward correction of RF power amplifier
04/27/1999CA2251406A1 Digital fsk demodulator
04/27/1999CA2248717A1 Multiband detector
04/27/1999CA2156757C Spread-response precoding system for wireless transmission
04/27/1999CA2110578C Qam system in which the constellation is modified in accordance with channel quality
04/27/1999CA2086980C Adaptive equalizer and receiver
04/22/1999WO1999020061A2 Method and receiving device for estimating channels in communications systems
04/22/1999WO1999020027A2 Splitterless multicarrier modem
04/22/1999WO1999020023A1 Synchronization techniques and systems for radiocommunication
04/22/1999WO1999020016A1 Method and apparatus for maintaining a predefined transmission quality in a wireless man network
04/22/1999WO1999020007A1 A system and method for mitigating intermittent interruptions in an audio radio broadcast system
04/22/1999WO1999019990A2 Compensation of delay in linearization loop of power amplifier
04/22/1999WO1999019808A1 Data transfer over wire or wireless medium
04/22/1999WO1999007119A3 Truncated maximum likelihood sequence estimator for wireless local area networks
04/22/1999WO1999007093A3 Wireless broadband transmitter for a signal consisting of a plurality of digitally modulated carriers
04/22/1999CA2306917A1 Synchronization techniques and systems for radiocommunication
04/22/1999CA2306803A1 Method and apparatus for maintaining a predefined transmission quality in a wireless man network
04/21/1999EP0910034A2 Modulation method for the data transmission from a transponder to a writer/reader
04/21/1999CN1214818A Disabling tone detector for network echo canceller
04/21/1999CN1214817A Method and circuit arrangement for processing received signal
04/21/1999CN1214586A Frequency shift key (FSK) demodulator
04/21/1999CN1214585A Digital receiver with polyphase structure
04/21/1999CN1214574A Analog/digital conversion device with sample-and-hold circuit
04/20/1999US5896425 Non-uniformly spaced tones for synchronization waveform
04/20/1999US5896421 Use of low pass filter and equalizer for noise reduction in direct up-conversion schemes
04/20/1999US5896420 Transmission apparatus having echo cancellation facility
04/20/1999US5896405 Apparatus for restoring a digital transmission signal
04/20/1999US5896306 Group delay correction method and apparatus
04/20/1999US5896060 DPSK demodulator which may be used in an interrogator of a remote intelligence communication system
04/15/1999WO1999018702A1 Method and system for generating a power control command in a wireless communication system
04/15/1999WO1999018701A1 Splitterless digital subscriber line communication system
04/15/1999WO1999018700A1 Low power density radio systems
04/15/1999WO1999018662A1 Method and apparatus for reducing power dissipation in multi-carrier amplifiers
04/15/1999WO1999018659A1 Synchronous demodulator
04/15/1999WO1999018657A2 Down/up-conversion apparatus and method
04/15/1999WO1999005861A3 Reception of modulated carriers having asymmetrical sidebands
04/15/1999WO1999005787B1 Adaptively equalized burst receiver and method for upstream broadband data
04/14/1999EP0909067A1 Modulator and modulation method
04/14/1999EP0909066A2 Method and device for adjusting the quantization characteristics of a PCM coding
04/14/1999EP0908024A1 Packet-switched spread-spectrum system