Patents for H04L 27 - Modulated-carrier systems (89,721) |
---|
09/06/1996 | WO1996021304A3 Combating signal interference in digital transmission |
09/06/1996 | WO1996021279A3 Frequency synthesizer |
09/06/1996 | WO1996020540A3 Dual-mode fm/cdma communication system |
09/04/1996 | EP0730363A1 Method and device for receiving multiple bit rates by unique filtering for interpolation and adaption |
09/04/1996 | EP0730357A2 Frequency and frame synchronisation for OFDM |
09/04/1996 | EP0730356A2 Communication system and method for transmitting data of different types |
09/04/1996 | EP0730251A2 Non-contact type IC card, system and data transmission method therefor |
09/04/1996 | EP0462217B1 Data signal discrimination method and apparatus |
09/03/1996 | US5553318 Transmitter having envelope feedback loop and automatic level control loop |
09/03/1996 | US5553101 Demodulation logic unit adaptable to multiple data protocols |
09/03/1996 | US5553099 FSK detector for determining an increasing time period between adjacent pulses of an FSK modulated square wave pulse train |
09/03/1996 | US5553098 Demodulator with selectable coherent and differential data |
09/03/1996 | US5553064 High speed bidirectional digital cable transmission system |
09/03/1996 | CA2170568A1 Multirate reception device and process using a single interpolation and adaptation filter |
09/03/1996 | CA2066711C Dual mode automatic gain control |
09/03/1996 | CA2054363C Coherent detection for quadrature phase shift key(qpsk) modulation |
08/29/1996 | WO1996026584A1 Tx preemphasis filter and tx power control based high speed two-wire modem |
08/29/1996 | WO1996018261A3 High speed communications system for analog subscriber connections |
08/28/1996 | EP0729251A2 Data reproducing method and data reproducing unit with sampling |
08/28/1996 | EP0729250A2 OFDM transmission/reception system and transmitting/receiving apparatus |
08/28/1996 | EP0729241A2 Dual mode code division multiple access communication system and method |
08/28/1996 | EP0728393A1 Simultaneous demodulation and decoding of a digitally modulated radio signal |
08/28/1996 | CN1129870A Improved subcarrier multiple access passive optical network |
08/27/1996 | US5551070 Cartesian multicarrier feedback |
08/27/1996 | US5550881 Automatic modulation mode selecting unit and method for modems |
08/27/1996 | US5550871 Satellite communication receiving apparatus |
08/27/1996 | US5550869 Demodulator for consumer uses |
08/27/1996 | US5550868 π/4-DQPSK delay spread detection and compensation apparatus and method |
08/27/1996 | US5550867 Complex angle converter |
08/27/1996 | US5550866 Digital demodulator reference signal generator having DC blocker and first Hilbert transformation with quadrature output followed by gain staging and combination for second Hilbert transformation quadrature output |
08/27/1996 | US5550865 Frequency modulator for data transceiver |
08/27/1996 | US5550859 Recovering analog and digital signals from superimposed analog and digital signals using linear prediction |
08/27/1996 | US5550812 System for broadcasting and receiving digital data, receiver and transmitter for use in such system |
08/27/1996 | US5550579 Two-way cable tv conversion system |
08/27/1996 | US5550506 DQPSK demodulator capable of improving a symbol error rate without decreasing a transmission rate |
08/27/1996 | US5550505 Frequency shift keying (FSK) demodulator for use in low signal-to-noise ratio environments |
08/27/1996 | CA2075302C Method and apparatus for real-time demodulation of a gmsk signal by a non-coherent receiver |
08/27/1996 | CA2046522C System for synthesizing a modulated signal |
08/22/1996 | WO1996025809A1 Method and apparatus for reducing quantization noise |
08/22/1996 | WO1996025802A2 System, transmitting and receiving circuitry for serially transmitting and serially receiving encoded information and method of operation |
08/22/1996 | WO1996025789A1 Amplitude and phase error normalization of subcarrier generator |
08/22/1996 | WO1996025734A1 Magnetic recording reproduction system employing a variable reluctance gap shunt |
08/22/1996 | CA2185026A1 Method and apparatus for reducing quantization noise |
08/21/1996 | EP0727890A2 Method and device for the reception of signals affected by inter-symbol interference |
08/21/1996 | EP0727885A2 OFDM broadcast wave receiver |
08/21/1996 | EP0727120A1 Method and apparatus for the transmission of variable rate digital data |
08/21/1996 | EP0727116A1 Variable rate signal transmission in a spread spectrum communication system using coset coding |
08/21/1996 | EP0727112A1 Dual-mode wireless unit with two spread-spectrum frequency bands |
08/21/1996 | CN1129504A Maximum likelihood decoding and synchronous detecting method |
08/21/1996 | CN1129384A Apparatus for decoding a signal encoded by using trellis coded modulation |
08/21/1996 | CN1129095A Apparatus for reducing electromagnetic radiation from a differentially driven transmission line used for high data rate communication in a computerized tomography system |
08/20/1996 | US5548821 Adaptive system for self-tuning and selecting a carrier frequency in a radio frequency communication system |
08/20/1996 | US5548619 Radio receiver apparatus of orthogonal detection type comprising local oscillator means with improved automatic frequency control arrangement |
08/20/1996 | US5548618 Device for detecting BPSK modulated singular words suitable for a TDMA analog modem and detection method used therein |
08/20/1996 | US5548617 Digital VSB detector with bandpass phase tracker using rader filters, as for use in an HDTV receiver |
08/20/1996 | US5548615 Methods and apparatus for rotationally invariant multilevel coding |
08/20/1996 | US5548582 Multicarrier frequency hopping communications system |
08/20/1996 | US5548541 Finite impulse response filter for modulator in digital data transmission system |
08/20/1996 | US5548253 Signal processor |
08/15/1996 | WO1996024995A2 Method of communication channel monitoring using parity bits |
08/15/1996 | WO1996024992A1 Frequency hopped return link with net entry channel for a satellite personal communications system |
08/15/1996 | WO1996024989A2 Multi-point to point communication system |
08/15/1996 | CA2211803A1 Method of communication channel monitoring using parity bits |
08/15/1996 | CA2210920A1 Frequency hopped return link with net entry channel for a satellite personal communications system |
08/14/1996 | EP0726662A2 Receiver and transmitter-receiver |
08/14/1996 | EP0726658A2 Symbol and frame synchronization in both a TDMA system and a CDMA system |
08/14/1996 | EP0726650A1 Balanced phase splitting circuit |
08/14/1996 | EP0726000A1 Wideband fft channelizer |
08/14/1996 | EP0694228A4 Balanced modulator-transmitter |
08/14/1996 | CN1128924A Transmitter |
08/14/1996 | CN1128923A Digital transmission system comprising a receiver which includes carrier recovery circuit |
08/14/1996 | CN1128922A Method and device for demodulating signal transmitted by multi carrier |
08/14/1996 | CN1128918A Two-in-one transmitter and receiver |
08/13/1996 | US5546428 Differentially encoding quadrature phase shift keying modulation method and apparatus thereof |
08/13/1996 | US5546395 Dynamic selection of compression rate for a voice compression algorithm in a voice over data modem |
08/08/1996 | WO1996024205A1 Method and apparatus for generating plural quadrature modulated carriers |
08/08/1996 | WO1996024196A1 Method of error protected transmission, method of error protected reception of data and transmission system for transmission of data |
08/08/1996 | WO1996024098A2 Circuit arrangement comprising a permutation unit and method of processing a batch of items |
08/08/1996 | WO1996016496A3 Trellis coded 16 star qam with reed-solomon coding |
08/08/1996 | CA2211093A1 Method and apparatus for generating plural quadrature modulated carriers |
08/07/1996 | EP0725510A1 Method and apparatus for reducing peak-to-average requirements in multi-tone communication circuits |
08/07/1996 | EP0725508A1 A communication arrangement with improved echo and noise suppression in a channel containing quantization |
08/07/1996 | EP0725487A2 Multilevel coding for fractional bits |
08/07/1996 | EP0724802A1 Non-complex dual-correlation phase reversal detector and method |
08/07/1996 | EP0724654A1 Electric power distribution system for active cathodic protection of reinforced concrete constructions |
08/07/1996 | CN1128596A Diversity PI/4-DQPSK demodulation |
08/07/1996 | CN1128450A Quadrature modulator operable in quast-microwave band of digital communication system |
08/07/1996 | CN1128433A Synchro detection circuit |
08/06/1996 | US5544328 Apparatus for communicating information |
08/06/1996 | US5544200 Acquisition of carrier phase and symbol timing through joint estimation of phase and timing adjustments |
08/06/1996 | US5544196 Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system |
08/01/1996 | WO1996023366A1 A method and circuit for creating a modulated signal in a transceiver |
07/31/1996 | EP0724262A2 Class 4 partial response using peak sampling |
07/31/1996 | EP0723720A1 Digital communications equipment using differential quaternary frequency shift keying |
07/31/1996 | EP0584241A4 Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system |
07/31/1996 | CN1128091A Method and apparatus for automatic gain control and dc offset cancellation in quadrature receiver |
07/31/1996 | CN1128064A Pseudorandom noise ranging receiver which compensates for multipath distortion by making use of multiple correlator time delay spacing |
07/30/1996 | US5541990 Compensated hybrid |
07/30/1996 | US5541966 System and circuit for estimating the carrier frequency of a PSK numeric signal |
07/30/1996 | US5541965 Carrier frequency synchronization device using two different B/W filters |