A new method for estimating signal matched dual tree complex wavelet system

Author

Swamy, Shanti ; Joshi, S.D. ; Kumar, E. Y Naresh

Author_Institution

Mtech IIT Delhi, Nagpur, India

fYear

2009

fDate

14-16 March 2009

Firstpage

44

Lastpage

47

Abstract

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 the works of A.Gupta is studied for real wavelets and on the similar lines 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.

Keywords

channel bank filters; discrete wavelet transforms; 2-channel complex filter bank; complex-valued filter coefficients; directionally selective; discrete wavelet transform; dual-tree complex wavelet transform; matched wavelet filter bank; shift invariant; signal estimation; Continuous wavelet transforms; Differential equations; Discrete wavelet transforms; Filter bank; Finite impulse response filter; Matched filters; Research and development; Signal analysis; Wavelet analysis; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia, Signal Processing and Communication Technologies, 2009. IMPACT '09. International

Conference_Location

Aligarh

Print_ISBN

978-1-4244-3602-6

Electronic_ISBN

978-1-4244-3604-0

Type

conf

DOI

10.1109/MSPCT.2009.5164170

Filename

5164170