Systems and methods for characterizing transmission lines...

Details Systems and methods for characterizing transmission lines... Systems and methods for characterizing transmission lines...

H - Electricity

04

B

H04B 3/46 (2006.01) H04L 1/00 (2006.01) H04L 1/18 (2006.01) H04L 1/24 (2006.01) H04L 5/14 (2006.01) H04L 27/26 (2006.01) H04M 3/22 (2006.01) H04M 3/30 (2006.01)

Patent

CA 2415915

Using DSL modems as data collector, the modems processes the data to, for example, allow easier interpretation of the lien characteristics. In particular, the modems postprocess the data including calibration, filter compensation, determination of the SNR medley from the bits and gains tables and rate conversion. The interpretation process uses the postprocessed data and determines loop characterization, interferer detection, a data reduction estimation and a data rate estimation. The outputs of these determinations least allow for the characterization of the line conditions between the two modems.

En utilisant des modems pour lignes d'abonné numérique (DSL) comme collecteurs de données, les modems peuvent traiter les données afin de faciliter l'interprétation des caractéristiques du lien. En particulier, les modems post-traitent les données, notamment en ce qui concerne l'étalonnage, la compensation de filtrage et la détermination du mélange du rapport signal-bruit à partir des tables de bits et de gain et de la conversion de débits. Le processus d'interprétation, qui fait intervenir les données post-traitées, permet de caractériser la boucle, de détecter des interférences et d'estimer la réduction de données et le débit de données, et donc de déterminer au moins l'état de la ligne entre les deux modems.

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