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The Improvement and Analysis of Wavelet Transform to LMS Algorithm(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2016年03期
Page:
63-
Research Field:
计算机工程
Publishing date:

Info

Title:
The Improvement and Analysis of Wavelet Transform to LMS Algorithm
Author(s):
Wang Zhanlong
The 20th Institution of Chinese Electronical Technology Company，Xi’an 715608，China
Keywords:
wavelet transform; signal processing; steady-state misadjustment error; variable step-size LMS algorithm
PACS:
TN911.7
DOI:
10.3969/j.issn.1672-1292.2016.03.010
Abstract:
Although Variable Step-Size LMS algorithm has made some perfection in the compromise between the quick convergence and low steady-state misadjustment error，there will be a large space of improvement. The wavelet transformation of LMS algorithm is presented. Because the technology of wavelet has the function of “mathematics’s microscope”，the variable speed of step-size is adjusted by pulling the wavelet’s window. The steady-state misadjustment error to the convergence speed ratio is regarded as the window’s parameter. So the variable speed of step-size is adjusted timely by the relative variation of the two elements，then the convergence speed is adjusted timely and precisely the compromise between the quick convergence and low steady-state misadjustment error is better solved. The simulations verify that the wavelet transformation of LMS algorithm possesses better convergence speed and lower steady-state misadjustment error.

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Last Update: 2016-09-30