Integer Sequence window based Reconfigurable FIR filters

Rajan, Arulalan and Jamadagni, HS and Rao, Ashok (2008) Integer Sequence window based Reconfigurable FIR filters. In: Proc. of the 1st Intl. Workshop on Reconfigurable Computing held in conjunction with Intl. Conference on High Performance Computing, Bangalore, India, Dec. 2008. (Recipient of Best Paper Award from IEEE Computer).

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Abstract

Conventional hardware implementation techniques for FIR filters require the computation of filter coefficients in software and have them stored in memory. This approach is static in the sense that any further fine tuning of the filter requires computation of new coefficients in software. In this paper, we propose an alternate technique for implementing FIR filters in hardware. We store a considerably large number of impulse response coefficients of the ideal filter (having box type frequency response) in memory. We then do the windowing process, on these coefficients, in hardware using integer sequences as window functions. The integer sequences are also generated in hardware. This approach offers the flexibility in fine tuning the filter, like varying the transition bandwidth around a particular cutoff frequency.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	FIR filter;windowing technique;integer sequences; reconfigurable architecture
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	13 Oct 2011 11:58
Last Modified:	13 Oct 2011 11:58
URI:	http://eprints.iisc.ac.in/id/eprint/40653

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