Variable LMS algorithms using the time constant concept

Two variable least mean square (LMS) algorithms using the simple time constant concept, variable step size LMS (VS-LMS) and variable length LMS (VL-LMS) algorithms, are proposed. In proposed variable LMS algorithms, the time constant, by which the step size is changed in the VS-LMS algorithm and the...

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Bibliographic Details
Published in:IEEE transactions on consumer electronics 1994-08, Vol.40 (3), p.655-661
Main Authors: Won, Y.K., Park, R.-H., Park, J.H., Lee, B.-U.
Format: Article
Language:English
Subjects:
Adaptive filters
Algorithm design and analysis
Chaos
Convergence
Filtering algorithms
HDTV
Least squares approximation
Performance analysis
Stability
Steady-state
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Summary:Two variable least mean square (LMS) algorithms using the simple time constant concept, variable step size LMS (VS-LMS) and variable length LMS (VL-LMS) algorithms, are proposed. In proposed variable LMS algorithms, the time constant, by which the step size is changed in the VS-LMS algorithm and the filter length is varied in the VL-LMS algorithm, is used as a measure of the error signal convergence. Computer simulation results show that proposed algorithms are simpler but show better performance than conventional variable LMS algorithms.< >
ISSN:0098-3063
1558-4127
DOI:10.1109/30.320854