Soft decision approaches for blind adaptive decision feedback equalizers

Wonzoo Chung, T. J. Endres, Chris Long, C. R. Johnson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper, we consider joint blind optimization schemes for decision feedback equalizer (DFE) coefficients and decision device, and propose adaptive solutions based on a soft decision device which combines a blind infinite impulse response (IIR) filtering adaptation and the conventional decision directed (DD) DFE adaptation. The benefits of our approach are mainly three-fold: 1) the initialization of DFE taps does not rely on a training sequence, 2) the transition between the (re}initialization period and the tracking period is continuous and consequently the equalizer exhibits robust performance under sudden time variation in the multipath channel, and 3) the optimized soft decision device mitigates error propagation of the DFE equalizer and further reduces mean square error (MSE) of DFE.

Original languageEnglish
Title of host publicationIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages447-451
Number of pages5
Volume2004-January
ISBN (Print)078037858X
DOIs
Publication statusPublished - 2004
Externally publishedYes
Event4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003 - Rome, Italy
Duration: 2003 Jun 152003 Jun 18

Other

Other4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
CountryItaly
CityRome
Period03/6/1503/6/18

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Information Systems

Cite this

Chung, W., Endres, T. J., Long, C., & Johnson, C. R. (2004). Soft decision approaches for blind adaptive decision feedback equalizers. In IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC (Vol. 2004-January, pp. 447-451). [1319000] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SPAWC.2003.1319000