A new self-initiated optimum WLS approximation method for the design of linear phase FIR digital filters

Author

Chi, Chong-Yung ; Kou, Yung-Teng

Author_Institution

Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan

fYear

1991

fDate

11-14 Jun 1991

Firstpage

168

Abstract

The authors propose a novel self-initiated iterative optimum weighted least-squares (WLS) approximation method for the design of linear phase FIR (finite impulse response) digital filters. The designed optimum filters have nearly equiripple approximation error in every frequency band which is smaller than that of the Parks-McClellan optimum equiripple linear phase FIR filters with the same filter length. This fact is supported by two design examples. The proposed design method is also applicable to the design of arbitrary linear phase FIR filters with some minor modifications

Keywords

digital filters; filtering and prediction theory; least squares approximations; network synthesis; FIR digital filters; equiripple approximation error; finite impulse response; linear phase; optimum WLS approximation method; self-initiated method; weighted least-squares; Approximation error; Approximation methods; Design methodology; Digital filters; Finite impulse response filter; Frequency domain analysis; Frequency response; Iterative methods; Nonlinear filters; Passband;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1991., IEEE International Sympoisum on

Print_ISBN

0-7803-0050-5

Type

conf

DOI

10.1109/ISCAS.1991.176300

Filename

176300