Title :
Experimental Research on the Rule of Frequency-Band Derangement in Wavelet Packet Transform
Author :
Ying, Lin ; Jin-Yan, Luo
Author_Institution :
South China Univ. of Technol., Guangzhou
fDate :
May 30 2007-June 1 2007
Abstract :
The frequency-band derangement phenomenon of wavelet packet decomposition nodes, resulted from the defects of the DWT fast algorithms, is discussed. The rule of frequency-band derangement of wavelet packets nodes is studied with the method for signal processing experiments based on wavelet packets analysis, and then the means of adjusting frequency-band nodes in sequence is exploited. It is also found that the sequence of the adjusted wavelet packet nodes is the same as the Graycode, so with the idea of adjusting wavelet packet nodes, a new simple Gray coding algorithm is proposed.
Keywords :
Gray codes; discrete wavelet transforms; signal processing; DWT fast algorithms; Gray coding algorithm; frequency-band derangement rule; frequency-band nodes; signal processing; wavelet packet transform; Convolution; Educational institutions; Filters; Frequency conversion; Signal analysis; Signal processing; Signal processing algorithms; Wavelet analysis; Wavelet packets; Wavelet transforms; frequency-band derangement; signal processing; wavelet packet transform;
Conference_Titel :
Control and Automation, 2007. ICCA 2007. IEEE International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4244-0818-4
Electronic_ISBN :
978-1-4244-0818-4
DOI :
10.1109/ICCA.2007.4376931
