Construction of FIR Filter Using Modified Genetic Algorithm

Abstract: A method for the design of non recursive digital low pass FIR filter is proposed using GA. The main focus of the paper is to describe the developed and dynamic method of designing finite impulse response filter with automatic rapid and less error by an efficient genetic approach. GA is a powerful global optimization algorithm introduced in combinational optimization problems. Here, FIR filter is designed using Genetic approach by an efficient Genetic Algorithm (GA) coding scheme. The response is studied and implemented by keeping values of fixed order, crossover probability and mutation probability. GA offers a quick, simple and automatic method of designing low pass FIR filters that are very close to optimum in terms of magnitude response, frequency response and in terms of phase.

Keywords: Genetic Algorithm, FIR Filter, Optimization, DSP.