WSEAS Transactions on Signal Processing
Print ISSN: 1790-5052, E-ISSN: 2224-3488
Volume 15, 2019
A Method of Generating Intrinsic Mode Functions Through a Filtering Algorithm based on Wavelet Packet Decomposition
Authors: , ,
Abstract: After a consideration of the previous works on the empirical mode decomposition (EMD) method, we proposed a method to generate intrinsic mode functions (IMFs) through a filtering algorithm based on the wavelet packet decomposition (GIFWPD), and on this basis, performed Hilbert spectrum analysis. The method generates IMFs of which each frequency band has the maximum of width but is not overlapped each other. We adopted the same conditions of IMF from the EMD method as the criterion of IMFs to be generated. But, in the proposed method, the IMFs are gen-erated by a filtering algorithm based on wavelet packet decomposition instead of the sifting pro-cess in EMD. Some numerical simulations and comparisons are demonstrated in order to establish the applicability of the method
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Pages: 162-169
WSEAS Transactions on Signal Processing, ISSN / E-ISSN: 1790-5052 / 2224-3488, Volume 15, 2019, Art. #20