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Necessary and Sufficient Conditions for Stability of LMS
Chinese Academy of Sciences, China.
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
The Central University for Nationalities, China.
1995 (English)Report (Other academic)
Abstract [en]

Guo and Ljung (1995) established some general results on exponential stability of random linear equations, which can be applied directly to the performance analysis of a wide class of adaptive algorithms, including the basic LMS ones, without requiring stationarity, independency, and boundedness assumptions of the system signals. The current paper attempts to give a complete characterization of the exponential stability of the LMS algorithms by providing a necessary and sufficient condition for such a stability in the case of possibly unbounded, nonstationary, and non-φ-mixing signals. The results of this paper can be applied to a very large class of signals, including those generated from, e.g., a Gaussian process via a time-varying linear filter. As an application, several novel and extended results on convergence and the tracking performance of LMS are derived under various assumptions. Neither stationarity nor Markov-chain assumptions are necessarily required in the paper.

Place, publisher, year, edition, pages
1995. , 25 p.
Series
LiTH-ISY-R, ISSN 1400-3902 ; 1805
Keyword [en]
Least mean squares algorithm, LMS
Keyword [sv]
Cybernetik Informationsteori
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-55289ISRN: LiTH-ISY-R-1805OAI: oai:DiVA.org:liu-55289DiVA: diva2:315836
Available from: 2010-04-29 Created: 2010-04-29 Last updated: 2014-08-26Bibliographically approved

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Ljung, Lennart

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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  • text
  • asciidoc
  • rtf