Title
Transform domain LMF algorithm for sparse system identification under low SNR
Abstract
In this work, a transform domain Least Mean Fourth (LMF) adaptive filter for a sparse system identification, in the case of low Signal-to-Noise Ratio (SNR), is proposed. Unlike the Least Mean Square (LMS) algorithm, the LMF algorithm, because of its error nonlinearity, performs very well in these environments. Moreover, its transform domain version has an outstanding performance when the input signal is correlated. However, it lacks sparse information capability. To overcome this limitation, a zero attractor mechanism, based on the l <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> norm is implemented to yield the Zero-Attractor Transform-Domain LMF (ZA-TD-LMF) algorithm. The ZA-TD-LMF algorithm ensures fast convergence and attracts all the filter coefficients to zero. Simulation results conducted to substantiate our claim are found to be very effective.
Year
DOI
Venue
2015
10.1109/ACSSC.2015.7421118
2015 49th Asilomar Conference on Signals, Systems and Computers
Keywords
Field
DocType
Least Mean Fourth (LMF),Transform Domain (TD),Zero-Attractor ZA,Sparse solution
Least mean fourth,Least mean squares filter,Convergence (routing),Attractor,Mathematical optimization,Nonlinear system,Computer science,Algorithm,Adaptive filter,System identification,Filter design
Conference
Citations 
PageRank 
References 
1
0.36
10
Authors
2
Name
Order
Citations
PageRank
Murwan Bashir110.36
Azzedine Zerguine234351.98