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  • Research Article
  • Open Access

ADSL Transceivers Applying DSM and Their Nonstationary Noise Robustness

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  • 2,
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EURASIP Journal on Advances in Signal Processing20062006:067686

  • Received: 10 December 2004
  • Accepted: 18 May 2005
  • Published:


Dynamic spectrum management (DSM) comprises a new set of techniques for multiuser power allocation and/or detection in digital subscriber line (DSL) networks. At the Alcatel Research and Innovation Labs, we have recently developed a DSM test bed, which allows the performance of DSM algorithms to be evaluated in practice. With this test bed, we have evaluated the performance of a DSM level-1 algorithm known as iterative water-filling in an ADSL scenario. This paper describes the results of, on the one hand, the performance gains achieved with iterative water-filling, and, on the other hand, the nonstationary noise robustness of DSM-enabled ADSL modems. It will be shown that DSM trades off nonstationary noise robustness for performance improvements. A new bit swap procedure is then introduced to increase the noise robustness when applying DSM.


  • Information Technology
  • Performance Improvement
  • Quantum Information
  • Power Allocation
  • Performance Gain

Authors’ Affiliations

Research & Innovation Department of Alcatel, Francis Wellesplein 1, Antwerpen, 2018, Belgium
Access Networks Division of Alcatel, Francis Wellesplein 1, Antwerpen, 2018, Belgium
School of Information Technology & Electrical Engineering, University of Queensland, Brisbane, QLD, 4072, Australia
Department of Electrical Engineering, Katholieke Universiteit Leuven, Kasteelpark Arenberg 10, Leuven-Heverlee, 3001, Belgium


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© den Bogaert et al. 2006