Open AccessOptimal design of minimum multiplier lattice wave digital lowpass filter using metaheuristic techniques
Author(s) -
Barsainya Richa,
Aggarwal Apoorva,
Rawat Tarun Kumar
Publication year - 2018
Publication title -
iet signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.384
H-Index - 42
eISSN - 1751-9683
pISSN - 1751-9675
DOI - 10.1049/iet-spr.2017.0449
Subject(s) - stopband , passband , algorithm , low pass filter , filter design , mathematics , particle swarm optimization , digital filter , transfer function , band pass filter , prototype filter , high pass filter , control theory (sociology) , computer science , filter (signal processing) , mathematical optimization , bandwidth (computing) , electronic engineering , artificial intelligence , telecommunications , engineering , electrical engineering , control (management) , computer vision
This study aims towards the efficient design of arbitrary‐band and halfband lowpass (LP) filter based on lattice wave digital filter (LWDF) structure with the usage of minimal number of multipliers in its structural realisation. The designing of the LP filter is formulated as an optimisation problem where coefficients of LWDF transfer function are iteratively optimised by the evolutionary algorithms. The potential of four optimisation algorithms, real‐coded genetic algorithm, particle swarm optimisation, differential evolution algorithm, and cuckoo search algorithm, are explored for determining the optimal LWDF coefficients by minimising the error objective function. The structural realisation of LP using LWDF structure enhances the design accuracy as the usage of multiplier prominently reduces. The simulation and statistical results of the proposed lattice wave digital lowpass filter (LWDLF) and bireciprocal lattice wave digital lowpass filter (BLWDLF) design show significant improvement in the mean square error, passband ripples, transition bandwidth, stopband attenuation, rate of convergence, and execution time. To manifest the efficient design of the proposed LWDLF and BLWDLF, the results are compared with the designed arbitrary‐band, halfband canonic‐LP filters and previous published works.