TITLE:
DAPSO and PSO-VAF in Linear Phase Digital Low Pass FIR Filter Design
AUTHORS:
Mudit Shukla, G. R. Mishra
KEYWORDS:
Digital Filters Design; Low Pass FIR Filters; PSO; DAPSO; PSO-VAF
JOURNAL NAME:
Circuits and Systems,
Vol.5 No.3,
March
25,
2014
ABSTRACT: Digital filters play a key role in the field
of digital signal processing. This paper presents a linear phase digital low
pass finite impulse response (FIR) filter design using particle swarm optimization
and its two new variants, dynamic and adjustable particle swarm optimization
(DAPSO) and particle swarm optimization with variable acceleration factor
(PSO-VAF) and illustrates the superiority of the PSO-VAF method over
PSO based methods. Two fitness functions are considered. The fitness1 is used
to find the possible minimum ripples in pass band and stop band in case of PSO,
DAPSO and PSO-VAF. Fitness2 is able to control the ripples in both bands
separately. A comparison of simulation results demonstrates the performance of
PSO and its methods in designing digital low pass FIR filters.