DocumentCode
554886
Title
Spectrum signal de-noising based on wavelet packet
Author
Xu Zhe ; Yang Na
Author_Institution
Beijing Univ. of Technol., Beijing, China
fYear
2011
fDate
11-13 Aug. 2011
Firstpage
353
Lastpage
356
Abstract
The de-noising effects of wavelet transform, soft threshold, hard threshold and the new threshold wavelet packet were compared by simulation experiments in the paper. It is concluded that the wavelet packet has a good time and frequency domain localization properties and multi-resolution analysis, and the new threshold method can de-noise noisy spectrum effectively, overcome the constant bias and discontinuity defects of soft and hard threshold function.
Keywords
signal denoising; wavelet transforms; frequency domain localization properties; hard threshold function; multiresolution analysis; soft threshold function; spectrum signal de-noising; threshold wavelet packet; wavelet transform; Analytical models; Equations; MATLAB; Mathematical model; Noise reduction; Time frequency analysis; Variable speed drives;
fLanguage
English
Publisher
ieee
Conference_Titel
Advanced Mechatronic Systems (ICAMechS), 2011 International Conference on
Conference_Location
Zhengzhou
Print_ISBN
978-1-4577-1698-0
Type
conf
Filename
6024915
Link To Document