Title :
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
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;
Conference_Titel :
Computer, Communication, Control and Information Technology (C3IT), 2015 Third International Conference on
Conference_Location :
Hooghly
Print_ISBN :
978-1-4799-4446-0
DOI :
10.1109/C3IT.2015.7060165
