一种在复频域设计FIR滤波器的算法

A Method for Designing FIR filters in the Complex Domain

本文讨论了在复Chebyshev意义下逼近理想复频响应的FIR滤波器设计问题．给出了一种通过解决半无限线性规划的对偶规划的设计方法，这种算法是单纯形法的一种变形，具有较好的收敛速度和数值稳定性，并给出仿真结果说明了算法的性能．

This paper discusses the design of FIR filters that approximates a desired complex-valued frequenCy response in the complex Chebyshev sense. An improved algorithm solving the dual of semi-infinite linearprogramming is presented. The algroithm is a variant of the simplex method. It exhibits good convergence speedand numerical robus. Examples are presented to illustrate the performance of the algorithm.