Robust decision feedback equalizers

  • Authors:

  • Mikael Sternad;Anders Ahlén;Erik Lindskog

  • Affiliations:

  • Systems and Control Group, Uppsala University, Uppsala, Sweden;Systems and Control Group, Uppsala University, Uppsala, Sweden;Systems and Control Group, Uppsala University, Uppsala, Sweden

  • Venue:
  • ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: digital speech processing - Volume III
  • Year:
  • 1993

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Abstract

Design equations are presented for robust and realizable decision feedback equalizers, for IIR channels with coloured noise. Given a probabilistic measure of model uncertainty, the mean MSE, averaged over a whole class of possible models, is minimized. A second type of robustification, which reduces the error propagation due to the feedback, is also introduced. The resulting design equations define a large class of equalizers, with DFE's and linear equalizers based on nominal models being special cases.