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Novel Methods to Design Low-Complexity Digital Finite Impulse Response (FIR) Filters

Novel Methods to Design Low-Complexity Digital Finite Impulse Response (FIR) Filters
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Author(s): David Ernesto Troncoso Romero (CONACYT at ESCOM-IPN, Mexico) and Gordana Jovanovic Dolecek (Institute INAOE Puebla, Mexico)
Copyright: 2018
Pages: 11
Source title: Encyclopedia of Information Science and Technology, Fourth Edition
Source Author(s)/Editor(s): Mehdi Khosrow-Pour, D.B.A. (Information Resources Management Association, USA)
DOI: 10.4018/978-1-5225-2255-3.ch542

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Abstract

Digital filters play a central role in modern Digital Signal Processing (DSP) systems. Finite Impulse Response (FIR) filters can provide solutions with guaranteed stability and linear phase. However, the main disadvantage of conventional FIR filter designs is that they become computationally complex, especially in applications demanding narrow transition bandwidths. Therefore, designing FIR filters with very stringent specifications and a low complexity is currently an important challenge. In this chapter, a review of the recent methods to efficiently design low-complexity linear-phase FIR filters is presented. The chapter starts with an introduction to linear-phase FIR digital filters. Then, an overview of the design methods that have been developed in literature to design low-complexity FIR filters is presented. Finally, the most common and recent of these methods along with their corresponding special structures are explained.

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