Far-end crosstalk canceling method and device

摘要

A method for remote crosstalk cancellation in an xDSL system is provided. The method includes: receiving, at a first transmitting end, a noise statistic related value fed back from a first receiving end, wherein the noise statistic related value reflects a numeric value of a signal-to-noise ratio of a first line; pre-coding, at the first transmitting end, the first signal and crosstalk source signals according to values of filtering parameters; and transmitting the pre-coded signals. A corresponding device for remote crosstalk cancellation is provided.

主权项

1. A method for reducing far-end crosstalk in a xDSL (Digital Subscriber Lines) system, wherein the xDSL system comprises a first line and second lines, the method comprises:
receiving a noise statistic related value fed back from a first xDSL receiving end to a first xDSL transmitting end over the first line, wherein the noise statistic related value reflects a numeric value of a signal-to-noise ratio of the first line; pre-coding, a first signal and crosstalk source signals according to values of filtering parameters to form a synthesized signal corresponding to the first line; wherein the crosstalk source signals are related to second signals over the second lines, and the values of the filtering parameters are acquired according to the noise statistic related value; wherein the first signal is to be transmitted over the first line from the first xDSL transmitting end to the first xDSL receiving end, and the second signals are to be transmitted from a second xDSL transmitting end to a second xDSL receiving end over each of the second lines; and transmitting the synthesized signal from the first transmitting end to the first receiving end over the first line.