Interpolation method and apparatus for increasing efficiency of crosstalk estimation

US8300726B2 · kind B2 · utility

Assignee

• Alcatel Lucent · FR

Inventors

• Alexei Ashikhmin · Morristown, US
• Adriaan J. De Lind Van Wijngaarden · New Providence, US
• Gerhard Kramer · Bedminster, US
• Philip Alfred Whiting · New Providence, US
• Miroslav Zivkovic · Enschede, NL

Key dates

• Filing date: Nov 2, 2007
• Grant date: Oct 30, 2012
• Expiry date: Apr 5, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B3/487
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Techniques are disclosed that efficiently obtain channel crosstalk estimates in DSL systems and other communication systems that may include unsynchronized channels. For example, a method includes obtaining a first set of estimated measures of crosstalk for a first portion of a plurality of communication channels over which data signals are to be transmitted from a transmitter to a plurality of receivers, and interpolating a second set of estimated measures of crosstalk for a second portion of the plurality of communication channels based on the first set of estimated measures of crosstalk. The first portion of the plurality of communication channels may be a subset of the plurality of communication channels and the second portion of the plurality of communication channels is a remainder of the plurality of communication channels. Each estimated measure of crosstalk may relate to at least one tone associated with at least one of the plurality of communication channels.