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Archive | 1981

Filtrage adaptatif à complexité réduite

André Desblache

AnalyseDans un système de transmission de données sur voie téléphonique, les distorsions linéaires peuvent être compensées par un égaliseur qui est souvent réalisé à l’aide d’un filtre transversal numérique adaptatif. Cet article présente un algorithme heuristique permettant la réduction de la complexité du calcul dans un filtre adaptatif sans diminuer les performances du récepteur. Le fonctionnement du système a été simulé et les résultats de cette simulation sont présentés.AbstractIn a data transmission over a telephone channel, linear distorsions may be compensated with an equalizer. This system is quite often implemented with a digital adaptive transversal filter. An heuristic algorithm is presented in the paper, this algorithm allows the reduction of computation complexity in an adaptive filter without decreasing the receiver performances. The operation of a system using this algorithm has been simulated and the results of the simulation are presented.


Archive | 1984

Voice activity detection process and means for implementing said process

André Desblache; Claude Galand; Robert Vermot-Gauchy


Archive | 1978

Self-adaptive digital filter for noise and phase jitter reduction

André Desblache


Archive | 1984

Method of initializing a filter in an echo canceller and communication system using said method

André Desblache; Claude Galand; Robert Vermot-Gauchy


Archive | 1975

System for detecting digital data transmitted by modulating a carrier

Alain Croisier; André Desblache


Archive | 1975

Phase filter for reducing the effects of the noise components altering discrete phase modulated signals

André Desblache; Thomas E Stern; Philippe Thirion


Archive | 1976

METHOD AND DEVICE FOR SYNCHRONIZING THE RECEIVER CLOCK IN A DATA TRANSMISSION SYSTEM

François Caron; André Desblache; Dominique Godard; Francis Maddens


Archive | 1975

Carrier-modulation data transmission equalizers

André Desblache; Thomas E Stern


Archive | 1983

Process for activity detection in a voice transmission system

André Desblache; Claude Galand; Robert Vermot-Gauchy


Archive | 1983

STARTING-UP METHOD FOR AN ECHO CANCELLER FILTER, AND COMMUNICATION SYSTEM USING THIS METHOD

André Desblache; Claude Galand; Robert Vermot-Gauchy

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