| Patents for H04L 27 - Modulated-carrier systems (89,721) |
|---|
| 04/30/1997 | DE19539939A1 Code transmitter e.g. for motor vehicle theft prevention system |
| 04/30/1997 | DE19538935A1 Digital AM demodulator |
| 04/30/1997 | CN1148764A Error resetting method in data communication and apparatus thereof |
| 04/30/1997 | CN1148759A Equalizer circuit of data communication terminal equipment and method thereof |
| 04/29/1997 | US5625874 Terminal station which does not cause an interruption of communication on changing of a communication system |
| 04/29/1997 | US5625828 Parallel operating CPU core and DSP module for executing sequence of vector DSP code instructions to generate decoded constellation points in QAM/TCM modem application |
| 04/29/1997 | US5625652 Timing recovery controller and method for adjusting the timing of synchronizing windows in a PSK demodulator |
| 04/29/1997 | US5625651 Discrete multi-tone data transmission system using an overhead bus for synchronizing multiple remote units |
| 04/29/1997 | US5625650 For detecting subcarriers of an input signal |
| 04/29/1997 | US5625649 Clock recovery circuit of demodulator |
| 04/29/1997 | US5625647 Transmitter having automatic level control function |
| 04/29/1997 | US5625643 Modulator and demodulator apparatus |
| 04/29/1997 | US5625642 Spread-response precoding system having signature sequences longer than the inter-symbol time interval |
| 04/29/1997 | US5625573 Fast acquisition of GMSK-modulated signal for CDPD applications |
| 04/24/1997 | WO1997015125A1 Embedded data link and protocol |
| 04/24/1997 | DE19616829C1 Radio transfer system for digital signals between several subscriber terminals and base station |
| 04/24/1997 | DE19536579A1 Phase cascade generator circuit arrangement |
| 04/23/1997 | EP0769873A1 Radio frequency receiver adapted to receive one or more modulated signals |
| 04/23/1997 | EP0769364A2 Phase trading particularly for HDTV receivers |
| 04/23/1997 | EP0769231A1 Voice over data modem with selectable voice compression |
| 04/23/1997 | EP0769222A1 Improved sigma-delta fm demodulator |
| 04/23/1997 | CN1148298A QPSK demodulator for obtg. phase by arithmetic operation |
| 04/23/1997 | CN1148294A Frequency modulated signal demodulator circuit and communication terminal equipment |
| 04/22/1997 | US5623521 Digital gain controller and gain control method |
| 04/22/1997 | US5623520 Correlation detector employing two level A/D conversion and arithmetic sign control |
| 04/22/1997 | US5623518 Method and circuit arrangement for transmitting binary data trains |
| 04/22/1997 | US5623516 Frame synchronization for QAM |
| 04/22/1997 | US5623514 IC card-type modem and method for communicating data by IC card-type modem |
| 04/22/1997 | US5623513 Mitigating clipping and quantization effects in digital transmission systems |
| 04/22/1997 | US5623511 Spread spectrum code pulse position modulated receiver having delay spread compensation |
| 04/22/1997 | US5623487 Doubly orthogonal code and frequency division multiple access communication system |
| 04/22/1997 | US5623485 Dual mode code division multiple access communication system and method |
| 04/22/1997 | US5623226 Automatic calibration of carrier suppression and loop phase in a Cartesian amplifier |
| 04/22/1997 | US5623225 Quadrature signal demodulation using quantizing and accumulating |
| 04/18/1997 | CA2187380A1 Sampling system for radio frequency receiver |
| 04/17/1997 | WO1997014241A1 Burst mode preamble |
| 04/17/1997 | WO1997014228A1 A method and a circuit of self calibrating and testing qpsk transceivers |
| 04/17/1997 | WO1997014138A1 Wavelet based data compression |
| 04/17/1997 | CA2226922A1 Burst mode preamble |
| 04/17/1997 | CA2184306A1 Adaptive digital symbol recovery for amplitude phase keyed digital communication systems |
| 04/16/1997 | EP0768783A2 Adaptive symbol recovery for APSK signals |
| 04/16/1997 | EP0768782A1 Wide-band microwave vector modulator |
| 04/16/1997 | EP0768781A2 Apparatus for high-speed simultaneous voice/data communications |
| 04/16/1997 | EP0768780A2 Method and apparatus for wavelet based data compression having adaptive bit rate control for compression of digital audio or other sensory data |
| 04/16/1997 | EP0767996A1 Method for estimating residual phase error in demodulated digital signal samples, and correction method therefor |
| 04/16/1997 | EP0739563A4 Higher order digital phase loop filter |
| 04/16/1997 | EP0739555A4 Satellite receiver system having doppler frequency shift tracking |
| 04/16/1997 | EP0639306B1 Method and apparatus for amplifying, modulating and demodulating |
| 04/16/1997 | EP0632947A4 Method and apparatus of adaptive maximum likelihood sequence estimation using filtered correlation synchronization. |
| 04/16/1997 | CN1147887A Testing device for GMSK communication device |
| 04/16/1997 | CN1147883A Method of error protected transmission, method of error protected reception of data and transmission system for transmission of data |
| 04/16/1997 | CN1147742A Circuit for detecting completion of carrier recovery and symbol timing recovery, method thereof, and high definition television adapting the same |
| 04/16/1997 | CN1147737A Transmitter and receiver for orthogonal frequency division multiplexing signal |
| 04/15/1997 | US5621767 Method and device for locking on a carrier signal by dividing frequency band into segments for segment signal quality determination and selecting better signal quality segment |
| 04/15/1997 | US5621766 Method and apparatus for burst detecting |
| 04/15/1997 | US5621765 Detector of the presence of a transmission in a modem |
| 04/15/1997 | US5621764 Soft decision signal outputting receiver |
| 04/15/1997 | US5621763 Apparatus and method for generating a transition between the on and off states of a radio frequency transmitter |
| 04/15/1997 | US5621762 Method for modulating a digital information |
| 04/15/1997 | US5621761 Rotationally invariant trellis coding incorporating transparent binary convolutional codes |
| 04/15/1997 | US5621755 CMOS technology high speed digital signal transceiver |
| 04/15/1997 | US5621483 Polarity selection circuit for bi-phase stable FPLL |
| 04/11/1997 | CA2184530A1 Apparatus for high-speed simultaneous voice/data communications |
| 04/10/1997 | WO1997013378A2 Apparatus and method for determining and using channel state information |
| 04/10/1997 | WO1997013350A1 Multicarrier modulation |
| 04/10/1997 | WO1997013349A2 Receiver architecture for receiving angle-modulated/scanned carrier signals of different frequency |
| 04/10/1997 | WO1997013333A2 Distributed circuit switched radiocommunications network |
| 04/10/1997 | CA2233723A1 Apparatus and method for determining and using channel state information |
| 04/10/1997 | CA2232634A1 Distributed circuit switched radiocommunications network |
| 04/09/1997 | CN1147318A Synchronous detector and method for synchronous detection |
| 04/09/1997 | CN1147187A Control signal detection method with calibration error and subscriber unit therewith |
| 04/08/1997 | US5619540 Transmission system using block-coded or trellis-coded modulations, receiver and decoder for such a system |
| 04/08/1997 | US5619537 Maximum a posteriori decoder for digital communications |
| 04/08/1997 | US5619533 Channel-independent equalizer device |
| 04/08/1997 | US5619524 Method of estimating transmission rate in a receiver |
| 04/08/1997 | US5619508 Dual port interface for a computer-based multifunction personal communication system |
| 04/08/1997 | US5619507 Method and apparatus for establishing and maintaining frame synchronization in a satellite communication system |
| 04/08/1997 | US5619505 Method for producing and recovering a data stream for a DMT transceiver |
| 04/08/1997 | US5619167 Maximum likelihood decoding coherent detection method |
| 04/03/1997 | WO1997012471A1 Method and system for transferring data between a mobile and a stationary group of persons |
| 04/03/1997 | WO1997012467A1 Method and system for rapidly generating and transmitting a character sequence using voice frequencies |
| 04/03/1997 | WO1997012466A1 Apparatus and method for digital information transfer |
| 04/03/1997 | WO1997012465A1 Communications method and apparatus for digital information |
| 04/03/1997 | WO1997012464A1 Digital communications modulation method and apparatus |
| 04/03/1997 | WO1997012446A2 Receiver architecture for the receiving of angle-modulated/ angle-keyed carrier signals |
| 04/03/1997 | WO1997002675A3 Cdma modem |
| 04/03/1997 | DE19541188C1 Classification method for type of modulation of complex data signal |
| 04/03/1997 | DE19536527A1 Empfängerarchitektur zum Empfangen von winkelmodulierten/-getasteten Trägersignalen Receiver architecture for receiving angle-modulated / -getasteten carrier signals |
| 04/03/1997 | DE19536526A1 Empfängerarchitektur zum Empfangen von winkelmodulierten/-getasteten Trägersignalen unterschiedlicher Frequenz Receiver architecture for receiving angle-modulated / -getasteten carrier signals of different frequencies |
| 04/03/1997 | CA2231826A1 Method and system for the high-speed generation and transmission of a sequence of characters by means of voice frequencies |
| 04/02/1997 | EP0766478A2 Signal transmission system |
| 04/02/1997 | EP0766433A1 Correction of a quadrature error in a modulator and/or demodulator of signals with a plurality of phase states |
| 04/02/1997 | EP0766432A2 Frequency division multiplexed signal generating apparatus and related decoding apparatus |
| 04/02/1997 | EP0766422A2 Transmission by means of geometrically modulated waves |
| 04/02/1997 | EP0766418A2 Digital satellite broadcasting receiver |
| 04/02/1997 | EP0765559A1 Automatic modulation mode selecting unit and method for modems |
| 04/02/1997 | EP0765549A1 Ofdm signal organized so as to simplify reception |
| 04/02/1997 | EP0765545A2 Communications system and transmitting means therefor |
| 04/02/1997 | CN1146837A TX preemphasis filter and TX power control based high speed two-wire modem |
| 04/02/1997 | CN1146835A Method and apparatus for AM compatible digital broadcasting |