Performance results for digital subscriber line precoders

  • Authors:

  • Phil Whiting;Alexei Ashikhmin;Sem Borst;Jean Jennen;Gerhard Kramer;Adriaan J. de Lind van Wijngaarden;Miroslav Živković

  • Affiliations:

  • Complex System Analysis and Optimization department of Bell Labs, Murray Hill, New Jersey;Bell Labs' Communications and Statistical Sciences Department, Murray Hill, New Jersey;Mathematics of Networks and Systems Research Department at Bell Laboratories, Murray Hill, New Jersey;Bell Labs Research in Hilversum, The Netherlands;Bell Labs' Communications and Statistical Sciences Department, Murray Hill, New Jersey;Bell Labs' Communications and Statistical Sciences Department, Murray Hill, New Jersey;Alcatel-Lucent Bell Labs Europe, Hilversum, The Netherlands

  • Venue:
  • Bell Labs Technical Journal - Next-Generation Wireline Access Networks
  • Year:
  • 2008

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Abstract

Performance results are presented for digital subscriber line (DSL) precoders, also known as dynamic spectrum management (DSM) level 3, in terms of improvement of signal-to-noise ratio (SNR) and achievable bit rates under the very high speed digital subscriber line 2 (VDSL2) standard. Simulations were conducted using channel coefficients obtained from both empirical models and line measurements. The performance impact of various key factors is examined, including the number of lines, line lengths, frequency range, precoder design, channel measurement accuracy, and implementation accuracy (quantization errors). The results provide estimates of the achievable rate gains and offer guidance for the design and implementation of DSL precoders. © 2008 Alcatel-Lucent.