An Improved Method for Designing Prototype Filter for M-Band Pseudo QMF Banks

Author

Kumar, A. ; Singh, G.K. ; Anand, R.S.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Roorkee

Volume

2

fYear

2009

fDate

22-24 Jan. 2009

Firstpage

341

Lastpage

345

Abstract

This paper presents an iterative algorithm for the design of multichannel cosine modulated pseudo quadrature mirror filter (QMF) banks. In this algorithm, passband frequency is optimized to satisfy new perfect reconstruction condition at frequency (omega = pi/2M). The proposed algorithm is simple, and has high design efficiency. The performance of this algorithm is evaluated in terms of computational time (CPU time), reconstruction error (RE), number of iterations (NOI), aliasing distortion (AD) and signal to noise ratio (SNR). Several design examples are included to illustrate the proposed algorithm and its improved performances over other exiting methods.

Keywords

channel bank filters; iterative methods; quadrature mirror filters; signal reconstruction; M-band pseudo QMF banks; aliasing distortion; computational time; multichannel cosine modulated pseudoquadrature mirror filter; passband frequency; prototype filter; reconstruction error; Algorithm design and analysis; Design methodology; Distortion; Filter bank; Frequency; Iterative algorithms; Mirrors; Passband; Prototypes; Signal to noise ratio; Cosine modulated filter bank; Multirate theory; Pseudo QMF bank; QMF bank;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Engineering and Technology, 2009. ICCET '09. International Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4244-3334-6

Type

conf

DOI

10.1109/ICCET.2009.154

Filename

4769618