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Effects of input data correlation on the convergence of blind adaptive equalizers
1994 (English)In: ICASSP-94: 1994 IEEE International Conference on Acoustics, Speech and Signal Processing, April 19 - 22, 1994, Adelaide Convention Centre, Adelaide, South Australia; [proceedings], Piscataway, NJ: IEEE Communications Society, 1994, III/313-III/316 p.Conference paper, Published paper (Refereed)
Abstract [en]

A variety of blind equalization algorithms exist. These algorithms, which draw on some theoretical justification for the demonstration or analysis of their purportedly ideal convergence properties, almost invariably rely on the input data being independent and identically distributed (i.i.d.). In contrast, in this paper we show that input correlation can have a marked effect on the character of algorithm convergence. We demonstrate that under suitable input data correlation and channels: (i) undesirable local minima present in the i.i.d. case are absent for certain correlated sources implying ideal global convergence for some situations and, (ii) the most commonly employed practical algorithm can exhibit ill-convergence to closed-eye minima even under the popular single spike initialization when an eye-opening equalizer parameterization is possible.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 1994. III/313-III/316 p.
National Category
Signal Processing
Research subject
Signal Processing
Identifiers
URN: urn:nbn:se:ltu:diva-32026DOI: 10.1109/ICASSP.1994.390035Local ID: 661db300-a028-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-32026DiVA: diva2:1005260
Conference
IEEE International Conference on Acoustics, Speech, and Signal Processing : 19/04/1994 - 22/04/1994
Note
Uppr├Ąttat; 1994; 20070109 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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Leblanc, James
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CiteExportLink to record
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