Low-power FIR filter realization with differential coefficients and inputs

Author

Chang, Tian-Sheuan ; Chu, Yuan-Hua ; Jen, Chein-Wei

Author_Institution

Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

47

Issue

2

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

137

Lastpage

145

Abstract

This paper presents a low-power finite-impulse response filter design by using differential coefficients and inputs instead of using them directly such that fewer bits are required, thereby reducing the size of arithmetic units and power dissipation. We present an improved algorithm to effectively generate differential coefficients so that the differential coefficients methods can be applied to full bandwidth (BW) of filters instead of only narrow-band filters in previous approaches. Simulations with fixed coefficient filters indicate reduction in transition activity ranging from 1-53% over the full range of filter BW´s. The presented results can be applied to adaptive filters to generate suitable differential coefficients

Keywords

FIR filters; adaptive filters; digital arithmetic; digital filters; filtering theory; low-power electronics; adaptive filters; arithmetic units; differential coefficients; differential inputs; finite-impulse response filter design; fixed coefficient filters; full bandwidth filters; low-power FIR filter realization; power dissipation reduction; transition activity reduction; Arithmetic; Computational modeling; Energy consumption; Equations; Finite impulse response filter; Leakage current; Potentiometers; Power dissipation; Resistors; Solid state circuits;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.823543

Filename

823543