Periodic impulse noise mitigation in a dsl system

H - Electricity – 04 – L

Patent

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H04L 5/02 (2006.01) H04L 27/26 (2006.01)

Patent

CA 2582957

Methods and apparatuses for reducing effects of impulse noise in a DSL transmitter receiver device are described. According to certain embodiment, the method includes using a periodicity associated with the impulse noise affecting a DSL transmitter receiver device to determine data frames that are affected by the impulse noise, and sending a reduced data rate during those frames. In certain embodiments, no data is sent during those frames. The method further includes using a high margin bits and gain table, instead of a normal bits and gain table.

L'invention porte sur des procédés et sur des appareils permettant de réduire les effets du bruit impulsif dans un émetteur-récepteur DSL. Selon un mode de mise en oeuvre, le procédé consiste à utiliser une périodicité associée au bruit impulsif affectant l'émetteur-récepteur DSL afin de déterminer des trames de données affectées par le bruit impulsif et d'envoyer un débit de données réduit pendant ces trames. Selon d'autres modes de mise en oeuvre, aucune donnée n'est envoyée pendant ces trames. Le procédé consiste également à utiliser des bits à marge élevée et une table de gain à la place de bits normaux et d'une table de gains.

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