Low-power FIR filter realization with differential coefficients and inputs

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

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

This brief 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.

Original languageEnglish
Pages (from-to)137-145
Number of pages9
JournalIEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing
Volume47
Issue number2
DOIs
StatePublished - 1 Jan 2000

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