Optimal design of variable fractional-delay digital filters

Author

Deng, Ran-Bo

Author_Institution

Dept. of Inf. Sci., Toho Univ., Chiba, Japan

Volume

1

fYear

2001

fDate

2001

Firstpage

25

Abstract

This paper presents a closed-form solution for obtaining the optimal coefficients of variable FIR filters with continuously adjustable fractional-delay (FD) response. The design is formulated as a weighted-least-squares (WLS) approximation problem without discretizing the frequency and fractional-delay parameters. Compared with the existing WLS method, the discretization-free one can yield a closed-form optimal solution with considerably reduced computational complexity

Keywords

FIR filters; circuit optimisation; computational complexity; delays; digital filters; least squares approximations; network synthesis; WLS method; continuously adjustable fractional-delay response; discretization-free method; fractional-delay parameters; frequency parameters; optimal coefficients; optimal design; optimal solution; reduced computational complexity; variable FIR filters; variable fractional-delay digital filters; weighted-least-squares approximation; Computational complexity; Digital filters; Digital signal processing; Finite impulse response filter; Frequency response; Interpolation; Lagrangian functions; Polynomials; Sampling methods; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and its Applications, Sixth International, Symposium on. 2001

Conference_Location

Kuala Lumpur

Print_ISBN

0-7803-6703-0

Type

conf

DOI

10.1109/ISSPA.2001.949766

Filename

949766