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Blind adapted, pre-whitened constant modulus algorithm
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
University of Cergy-Pontoise.
2001 (English)In: Where minds meet: 2001 IEEE International Conference on Communications ; ICC 2001. June 11 - 14, 2001 ; Helsinki ; conference re / [ed] Yrjö Neuvo, Piscataway, NJ: IEEE Communications Society, 2001, Vol. 8, 2438-2442 p.Conference paper, Published paper (Refereed)
Abstract [en]

We examine the use of a blind adaptive “pre-whitening” filter to precede an equalizer adapted by the constant modulus algorithm (CMA). The idea is based on results presented in which the use of a (fixed, or non-adaptive) pre-whitening filter provides an isometry (i.e. geometry preserving transformation) between the combined channel-equalizer (or global space) and the equalizer tap space. As much analysis found in CMA literature is done in “global space” now applies to the pre-whitened “equalizer tap space”, considerable exploitation of a known geometric structure is now possible. This paper’s main result demonstrates a method for improving the convergence rates of CMA adapted equalizers using the results of prewhitening analysis. The slow convergence of CMA equalizers is a common negative point associated with this well-known, robust blind equalization algorithm.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2001. Vol. 8, 2438-2442 p.
National Category
Signal Processing
Research subject
Signal Processing
Identifiers
URN: urn:nbn:se:ltu:diva-29911DOI: 10.1109/ICC.2001.936583Local ID: 3888de60-799a-11db-8824-000ea68e967bISBN: 0-7803-7098-8 (print)ISBN: 0-7803-7097-1 OAI: oai:DiVA.org:ltu-29911DiVA: diva2:1003138
Conference
IEEE International Conference on Communications : 11/06/2001 - 14/06/2001
Note
Godkänd; 2001; 20060929 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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