Title :
NEW GRADIENT BASED VARIABLE STEP-SIZE LMS ALGORITHM
Author :
Zhang, Yonggang ; Li, Ning ; Chambers, Jonathon A.
Author_Institution :
Sch. of Eng., Cardiff Univ.
Abstract :
A new gradient-based variable step-size LMS algorithm (VSSLMS) is proposed in Ms paper. The step size of the proposed algorithm is proportional to the squared norm of the smoothed gradient vector, which is a proximity measure of the adaptive process. In comparison with the existing methods, the proposed VSSLMS algorithm has improved convergence properties. Furthermore, the parameter choice of the proposed algorithm can be easily determined according to the analysis. Simulation results show the good properties of the proposed algorithm and support the performance analysis
Keywords :
filtering theory; least mean squares methods; adaptive process; gradient based variable step-size LMS algorithm; performance analysis; smoothed gradient vector; Adaptive filters; Algorithm design and analysis; Analytical models; Convergence; Least squares approximation; Optimized production technology; Performance analysis; Size measurement; Smoothing methods; Steady-state;
Conference_Titel :
Signal Processing, 2006 8th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9736-3
Electronic_ISBN :
0-7803-9736-3
DOI :
10.1109/ICOSP.2006.344518
