A Design of 2-D Optimal Approximation FIR Digital Filter using Parks-McClellan Algorithm

Parks MeClellan 알고리듬을 이용한 이차원 최적 근사화 FIR 디지털 필터의 실시간 구현

This paper presents the design method for two-dimensional FIR digital filter using optimization scheme. The proposed design method is to extend the optimal one-dimensional filter design algorithm proposed by Parks and McClellan to two-dimensional case. When extending one-dimensional design scheme to two-dimensional one, some problems occur. In this paper we solved the problems by using the least square error model, the two-dimensional Lagrange interpolation, and the modified alternation theory. As a result, the equi-ripple FIR filter is obtained that is more optimal and more specific than the conventional methods.