Turbo multiuser detection for coded DMT VDSL systems

Huaiyu Dai, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


In recent years, iterative processing techniques with soft-in/soft-out components have received considerable attention. Such techniques, based on the so-called turbo principle, are exemplified through turbo decoding, turbo equalization, and turbo multiuser detection. In this paper, turbo multiuser detection is applied to a discrete multitone (DMT) very-high-rate digital subscriber line system to combat crosstalk signals and to obtain substantial coding gain. The proposed iterative DMT receiver is shown to achieve an overall 7.0-dB gain over the uncoded optimum receiver at a bit error rate of 10 -7 for a channel with severe intersymbol interference and additive white Gaussian noise and with one dominant crosstalk signal. Impulse noise is detrimental to the proposed scheme but can be overcome through erasure decoding techniques, as is shown by example.

Original languageEnglish (US)
Pages (from-to)351-362
Number of pages12
JournalIEEE Journal on Selected Areas in Communications
Issue number2
StatePublished - Feb 2002

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


  • Coded discrete multitone
  • Crosstalk
  • Gray coding
  • Impulse noise
  • Multiuser detection
  • Turbo decoding
  • Very-high-rate digital subscriber line


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