Title of article :
The Wavelet Transform-Domain LMS Adaptive Filter Algorithm with Variable Step-Size
Author/Authors :
Shams Esfand Abadi, M the Faculty of Electrical Engineering - Shahid Rajaee Teacher Training University, Tehran, Iran , Mesgarani, H the Faculty of Basic Sciences - Department of Applied Mathematics - Shahid Rajaee Teacher Training University, Tehran, Iran , M. Khademiyan, S the Faculty of Basic Sciences - Department of Applied Mathematics - Shahid Rajaee Teacher Training University, Tehran, Iran
Abstract :
The wavelet transform-domain least-mean square (WTDLMS) algorithm uses the self-orthogonalizing technique to improve the convergence performance of LMS. In WTDLMS algorithm, the trade-off between the steady-state error and the convergence rate is obtained by the fixed step-size. In this paper, the WTDLMS adaptive algorithm with variable step-size (VSS) is established. The step-size in each subfilter changes according to the largest decrease in mean square deviation. The simulation results show that the proposed VSS-WTDLMS has faster convergence rate and lower misadjustment than ordinary WTDLMS.
Keywords :
Mean Square Deviation , Variable Step-Size , Wavelet Transform Domain LMS (WTDLMS) , Adaptive Filter
Journal title :
Iranian Journal of Electrical and Electronic Engineering(IJEEE)
