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Fast M-band orthogonal wavelet transform algorithm when base length equals 2M

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3 Author(s)
Sang-Keun Kwon ; Dept. of Commun. Eng., Kumoh Nat. Univ. of Technol., Kyungbuk, South Korea ; Young-Seek Oh ; Dong Shin Seo

The fast implementation algorithm of M-band orthogonal wavelet filter bank (OWFB) with length L equal to 2M is proposed by using the lossless matrix factorisation method. The computational complexity of the proposed algorithm becomes lower than that of the direct filtering method (DFM):(M2+M+1) multiplications and M2+2M-1) additions against 2M2 and (2M2-M), respectively

Published in:

Electronics Letters  (Volume:33 ,  Issue: 6 )