Discretization-free design of variable fractional-delay FIR filters

Author

Deng, Tim-Bo

Author_Institution

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

Volume

2

fYear

2001

fDate

6-9 May 2001

Firstpage

625

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 complexity; delays; digital filters; filtering theory; least squares approximations; optimisation; WLS approximation problem; closed-form optimal solution; computational complexity reduction; continuously adjustable fractional-delay response; discretization-free design; optimal coefficients; variable fractional-delay FIR filters; weighted-least-squares approximation; Computational complexity; Digital filters; Digital signal processing; Finite impulse response filter; Frequency response; Information science; Interpolation; Lagrangian functions; Polynomials; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6685-9

Type

conf

DOI

10.1109/ISCAS.2001.921148

Filename

921148