Universal Decoding for Gaussian Intersymbol Interference Channels

Wasim Huleihel, Neri Merhav

Research output: Contribution to journalArticlepeer-review


A universal decoding procedure is proposed for the intersymbol interference (ISI) Gaussian channels. The universality of the proposed decoder is in the sense of being independent of the channel parameters, and at the same time, attaining the same random coding error exponent as the optimal maximum-likelihood decoder, which utilizes full knowledge of these unknown parameters. The proposed decoding rule can be regarded as a frequency domain version of the universal maximum mutual information decoder. Contrary to previously suggested universal decoders for ISI channels, our proposed decoding metric can easily be evaluated.

Original languageEnglish
Article number7045504
Pages (from-to)1606-1618
Number of pages13
JournalIEEE Transactions on Information Theory
Issue number4
StatePublished - 1 Apr 2015
Externally publishedYes


  • Gaussian channels
  • Universal decoding
  • deterministic interference
  • error exponents
  • interference intersymbol (ISI)
  • maximum mutual information
  • maximum-likelihood (ML)
  • random coding


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