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Design of Optimized Transition Width Linear Phase FIR Filter using PSO Algorithm with Constriction Factor Approach

Neha, Ajay Pal Singh. Published in Algorithms.

Communications on Applied Electronics
Year of Publication: 2016
Publisher: Foundation of Computer Science (FCS), NY, USA
Authors: Neha, Ajay Pal Singh

Neha and Ajay Pal Singh. Design of Optimized Transition Width Linear Phase FIR Filter using PSO Algorithm with Constriction Factor Approach. Communications on Applied Electronics 5(7):29-35, July 2016. BibTeX

	author = {Neha and Ajay Pal Singh},
	title = {Design of Optimized Transition Width Linear Phase FIR Filter using PSO Algorithm with Constriction Factor Approach},
	journal = {Communications on Applied Electronics},
	issue_date = {July 2016},
	volume = {5},
	number = {7},
	month = {Jul},
	year = {2016},
	issn = {2394-4714},
	pages = {29-35},
	numpages = {7},
	url = {},
	doi = {10.5120/cae2016652321},
	publisher = {Foundation of Computer Science (FCS), NY, USA},
	address = {New York, USA}


Digital filters are an integral part of today’s electronic industry. Finite Impulse Response (FIR) filters, a type of digital filter have found its use in vast number of applications due to their inherent nature of phase linearity and constant delay. But it has the disadvantage of requirement of large computational power and memory to achieve the same sharpness or cutoff that an Infinite Impulse Response (IIR) filter have. The present article aims on achieving an FIR filter with reduced transition width with the requirement of lesser computational elements. The evolutionary algorithm of Particle Swarm Optimization (PSO) is used for this case. The linear phase FIR filter is designed for high pass (HP) and band pass (BP) case in this article. The simulation results achieved transition width as low as 0.040 (HP) and 0.029 (BP) for the FIR filter designed with order 30 and 40 respectively.


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Convergence, FIR filter, PSO, Transition width.