Iterative Linear Programming Design of Digital Lowpass FIR Filters with Linear Phase

Research Article
Iterative Linear Programming Design of Digital Lowpass FIR Filters with Linear Phase

Wankun Kuang, Jingyu Hua, Chengfeng Ruan, Zheng Gao and Yuan Wu

Information Technology Journal, 2013, 12(4), 640-647.

Abstract

The minimax optimization is widely used in wireless communications to design the equiripple lowpass filter, such as the Linear Programming (LP) method. However, the conventional LP method suffered from its large computation loads. Hence, this study investigates an iterative LP method, in which constraints are iteratively thrown on the non-uniformly distributed frequency grid to reduce the problem scale as much as possible, resulting in much lower computations. Moreover, since the non-uniform frequency grid allows us to precisely control the ripple, the proposed method also yields a better equiripple result compared to the conventional LP method and the Particle Swarm Optimization (PSO) algorithm.

ASCI-ID: 28-1840

Cited References Fulltext

Cited By

A low complexity realisation of Winograd number theoretic transform and its application

International Journal of Electronics, 2015, 102(2), 248. DOI: 10.1080/00207217.2014.896045