Title
Double Direction Adaptation For Noise Reduction In Pre-Whitened Lms-Type Algorithms
Abstract
The LMS algorithm suffers from its slow rate of convergence, especially for high correlated input signal. The input pre-whitening based algorithms provide better convergence rate with the price of noise enhancement. To mitigate this drawback, we present in this paper a technique, which consists on exciting the adaptive filter at both the input signal direction and the pre-whitened input direction. Hence, two different step sizes are used, they permit to improve convergence rate without enhancing the noise during steady state. A theoretical analysis of the steady state performance is presented. Simulation results are also presented to support the analysis and to compare the proposed algorithm with classical ones.
Year
DOI
Venue
2006
10.1109/ICASSP.2006.1660603
2006 IEEE International Conference on Acoustics, Speech and Signal Processing, Vols 1-13
Keywords
Field
DocType
rate of convergence,convergence rate,adaptive filter,convergence,adaptive filters,least squares approximation,noise reduction,computational modeling,algorithm design and analysis,steady state,decorrelation,lms algorithm
Least mean squares filter,Noise reduction,Convergence (routing),Mathematical optimization,Algorithm design,Decorrelation,Control theory,Computer science,Algorithm,Rate of convergence,Adaptive filter,Steady state
Conference
ISSN
Citations 
PageRank 
1520-6149
0
0.34
References 
Authors
3
2
Name
Order
Citations
PageRank
Hichem Besbes18022.41
Sofia Ben Jebara22610.15