Signal reception system comprising an adaptive filter

Details Signal reception system comprising an adaptive filter Signal reception system comprising an adaptive filter

H - Electricity

03

H

H03H 21/00 (2006.01) H04B 1/12 (2006.01) H04B 1/26 (2006.01)

Patent

CA 2141272

In a signal reception system comprising an adaptive filter having a plurality of filter coefficients and producing a filtered signal, a differential detection circuit for carrying out differential detection operation by the use of a delayed signal wherein the filtered signal is delayed, and an error signal generation circuit for generating an error signal, the adaptive filter adjusts the plurality of filter coefficients in accordance with the error signal. An error signal control circuit has a threshold value and supplies the error signal to the adaptive filter only when the delayed signal has a signal value which is higher than the threshold value.

L'invention est un système de réception de signaux comportant un filtre adaptatif à plusieurs coefficients de filtrage qui produit un signal filtré, un circuit de détection différentiel utilisant un signal filtré retardé, et un circuit générateur de signaux d'erreur. Le filtre adaptatif ajuste les coefficients de filtrage selon le signal d'erreur. Un circuit de contrôle de signaux d'erreur utilise un seuil et ne transmet le signal d'erreur au filtre adaptatif que si le niveau du signal retardé dépasse ce seuil.

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