Method and apparatus for sensing noise signals in a wireline communications environment

摘要

The present invention relates to methods and apparatuses for sensing noise sources in a wireline communications environment such as a customer premises environment in a DSL system. In embodiments, the invention includes an additional sensor that is connected to power mains in a DSL customer premises environment either to characterize, at their source, noises coupling into the DSL lines, and/or to mitigate their impact into the DSL lines. One objective is associated with diagnostics that help to better characterize the noise signals themselves and derive correlation of signals sensed from the power mains and their possible projection onto the DSL line. Another objective makes use of these power line sensor signals to mitigate or to eliminate power line noises that make their way onto the DSL line. Example embodiments further include and exploit signals from additional secondary sensors such as secondary common mode, differential mode and phantom mode sensors.

主权项

1. An apparatus in a customer premises environment of a wireline communication system, comprising: a primary sensor coupled to receive data signals of the wireline communication system; and a power line sensor coupled to receive power line signals corresponding to noise source interferences originating from power mains in the customer premises environment, wherein the power line sensor is used with the primary sensor to characterize the noise source interferences in conjunction with another secondary sensor.