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Signal Processing
Volume 81, Issue 12, December 2001, Pages 2573-2581
 
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doi:10.1016/S0165-1684(01)00149-9    How to Cite or Link Using DOI (Opens New Window)
Copyright © 2001 Elsevier Science B.V. All rights reserved.

An improved frequency response masking approach for designing sharp FIR filters

Yong LianCorresponding Author Contact Information, E-mail The Corresponding Author, Lei Zhang and Chi Chung Ko

Department of Electrical and Computer Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore

Received 27 September 2000;
revised 11 April 2001.
Available online 17 October 2001.

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Abstract

A new method to reduce the number of multipliers in the design of sharp FIR filters by frequency-response masking technique is presented. The success of the proposed method is based on a modified frequency-response masking approach where one of the subfilters in the approach is implemented by interpolated finite-impulse response (IFIR) technique. We have shown by example that the proposed method yields additional savings of 21% in the number of multipliers compared to the original frequency-response masking approach.

Author Keywords: FIR filters; Digital filters

Article Outline

1. Introduction
2. A modified structure
3. Optimization of M and l
4. Design procedures
5. An example
6. Conclusions
References





Signal Processing
Volume 81, Issue 12, December 2001, Pages 2573-2581
 
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