Title :
Efficient weighted LP algorithm for the design of low-pass FIR filters with some closed-form derivations
Author :
Jou, Yue-Dar ; Nien, Tain-Shou
Author_Institution :
Dept. of Comput. & Inf. Sci., Mil. Acad., Kaohsiung
Abstract :
In this paper, an efficient iterative reweighted least-squares (IRLS) algorithm for the design of LP approximation FIR filters is investigated. The optimal filter coefficients are obtained by iteratively solving a system of linear equations whose associated matrix can be further simplified as closed-form expressions and pre-calculated as the filter is specified. Simulation results indicate the excellent performance of the proposed algorithm has a complexity of O(N2)
Keywords :
FIR filters; iterative methods; least squares approximations; low-pass filters; LP approximation; closed-form expressions; iterative reweighted least-squares algorithm; low-pass FIR filters; optimal filter coefficients; weighted algorithm; Algorithm design and analysis; Approximation algorithms; Chebyshev approximation; Equations; Finite impulse response filter; Frequency response; Iterative algorithms; Low pass filters; Military computing; Nonlinear filters;
Conference_Titel :
Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on
Conference_Location :
Tainan
Print_ISBN :
0-7803-8660-4
DOI :
10.1109/APCCAS.2004.1412780
