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