Single ended measurement method and system for determining...

Details Single ended measurement method and system for determining... Single ended measurement method and system for determining...

H - Electricity

04

M

H04M 3/26 (2006.01) G01R 31/11 (2006.01) H04B 3/46 (2006.01) H04L 1/24 (2006.01) H04L 25/02 (2006.01) H04M 3/30 (2006.01)

Patent

CA 2369858

A method and system for determining the make-up of a subscriber loop (220) comprising sending pulses onto a loop and acquiring data based on received echo signals. Determining (7301) from the received echoes each discontinuity on the loop and, based on each discontinuity, determining a channel transfer function (7305) for each loop section preceding the discontinuity. The transfer function is then used to synthesize an inverse filter (7309). The inverse filter and acquired data are convolved for all the loop sections preceding the discontinuity (7313). The method may be further improved by modeling real and spurious echoes and subtracting these echoes from the echoes generated in the loop.

L'invention concerne un procédé et un système servant à déterminer la constitution d'une boucle d'abonné (220). Le procédé consiste à envoyer des impulsions vers une boucle et à obtenir des données en fonction des signaux reçus en écho, à déterminer (7301) chaque discontinuité de la boucle à partir de ces échos reçus, et à déterminer, sur la base de chaque discontinuité, une fonction de transfert de canal (7305) pour chaque section de boucle précédant la discontinuité. La fonction de transfert est alors utilisée pour synthétiser un filtre inverse (7309), et ce filtre inverse et les données obtenues sont convolutionnées pour toutes les sections de boucle précédant la discontinuité (7313). On peut encore améliorer ce procédé en modélisant des échos parasites et en soustrayant ces échos aux échos produits dans la boucle.

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