Method, apparatus, and system for reducing digital subscriber line interference

摘要

The present invention provides a method, an apparatus, and a system for reducing digital subscriber line interference. The method includes identifying at least one legacy digital subscriber line in a digital subscriber line DSL legacy line set, obtaining a target power spectral density mask value of the legacy digital subscriber line, and reducing power spectral density of a transmit signal on the legacy digital subscriber line according to the target power spectral density mask value.

主权项

1. A method for reducing digital subscriber line interference, the method comprising:
identifying at least one legacy digital subscriber line in a digital subscriber line set, wherein the digital subscriber line set comprises at least one vectored digital subscriber line and the legacy digital subscriber line; obtaining a target power spectral density mask value of the legacy digital subscriber line, wherein the target power spectral density mask value is a reference value for reducing interference of the legacy digital subscriber line on the vectored digital subscriber line; and reducing power spectral density of a transmit signal on the legacy digital subscriber line according to the target power spectral density mask value; wherein obtaining the target power spectral density mask value of the legacy digital subscriber line comprises one of following two modes:
estimating the target power spectral density mask value of the legacy digital subscriber line according to a digital subscriber line interference model; andcalculating the target power spectral density mask value of the legacy digital subscriber line by obtaining a channel parameter of the legacy digital subscriber line.