Quadrature Mirror Filter bank with canonical signed digit representation using linear optimization algorithm

Author

Misra, Debajyoti ; Dhabal, Supriya ; Venkateswaran, Palaniandavar

Author_Institution

Dept. of ECE, Siliguri Inst. of Technol., Siliguri, India

fYear

2015

fDate

7-8 Feb. 2015

Firstpage

1

Lastpage

6

Abstract

In this paper a two channel Quadrature Mirror Filter (QMF) bank is designed using linear optimization algorithm. Filter coefficients are represented in canonical signed power of two. It is observed that the use of the Canonical Signed Digit (CSD) representation of filter coefficients can simplify the hardware implementation of digital filter. The proposed method not only reduces hardware complexity but also reduces reconstruction error of original signal to a larger extent to achieve near perfect reconstruction. A refurbishment method is used to restore the CSD format of coefficients after obtaining coefficients using linear optimization algorithm.

Keywords

channel bank filters; digital arithmetic; integrated circuit design; optimisation; quadrature mirror filters; CSD format; CSD representation; QMF bank; canonical signed digit representation; canonical signed power; digital filter; filter coefficients; hardware complexity; linear optimization algorithm; quadrature mirror filter bank; reconstruction error; refurbishment method; CSD; Peak Reconstruction Error; QMF; Sub-band Coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer, Communication, Control and Information Technology (C3IT), 2015 Third International Conference on

Conference_Location

Hooghly

Print_ISBN

978-1-4799-4446-0

Type

conf

DOI

10.1109/C3IT.2015.7060165

Filename

7060165