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A normalized robust mixed-norm adaptive algorithm for system identification

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2 Author(s)
Papoulis, Eftychios V. ; Commun. & Signal Process. Res. Group, Univ. of London, UK ; Stathaki, T.

A normalized robust mixed-norm (NRMN) algorithm for system identification in the presence of impulsive noise is introduced. The standard robust mixed-norm (RMN) algorithm exhibits slow convergence, requires a stationary operating environment, and employs a constant step-size that needs to be determined a priori. To overcome these limitations, the proposed NRMN algorithm introduces a time-varying learning rate and, thus, no longer requires a stationary environment, a major drawback of the RMN algorithm. The proposed NRMN exhibits increased convergence rate and substantially reduces the steady-state coefficient error, as compared to the least mean square (LMS), normalized LMS (NLMS), least absolute deviation (LAD), and RMN algorithm.

Published in:

Signal Processing Letters, IEEE  (Volume:11 ,  Issue: 1 )

Date of Publication:

Jan. 2004

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