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International Journal of

Recent Trends in Engineering

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International Journal of Recent Trends in Engineering (IJRTE)

ISSN 1797-9617

Volume 1,  Number 3,  May 2009

Issue on Electrical & Electronics

Page(s): 341-345

Estimation of Signal Matched Complex Wavelet Filter bank

           Shanti Swamy, S.D. Joshi

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Different properties of complex wavelets were studied and proved theoretically and practically. The dual-tree complex wavelet transform (CWT) is a relatively recent enhancement to the discrete wavelet transform (DWT). It is nearly shift invariant and directionally selective in two and higher dimensions. Firstly  equations are formulated for real signal and complex –valued filter coefficients for 2-channel complex filter bank. Secondly the equations are written for complex inputs and complex filters. The matched wavelet filter bank concept is implemented for the dual tree system with the help of derived equations and applied to 1-D and 2-D signals

Index Terms

complex filter bank, tree structures

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