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ADSL Transceivers Applying DSM and Their Nonstationary Noise Robustness

Abstract

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.

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Correspondence to Etienne Van den Bogaert.

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den Bogaert, E.V., Bostoen, T., Verlinden, J. et al. ADSL Transceivers Applying DSM and Their Nonstationary Noise Robustness. EURASIP J. Adv. Signal Process. 2006, 067686 (2006). https://doi.org/10.1155/ASP/2006/67686

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Keywords

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