An efficient design or fractional-delay digital FIR filters using the Farrow structure

Author

Pun, Carson K S ; Wu, Y.C. ; Chan, S.C. ; Ho, K.L.

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ., China

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

595

Lastpage

598

Abstract

Fractional-delay digital filter (FD-DF), implemented using the Farrow (1988) structure, is very attractive in providing online tuning delay of digital signals. This paper proposes a new method for the design of such Farrow-based FD-DF using sum-of-powers-of-two (SOPOT) coefficients. Using the SOPOT coefficient representation, coefficient multiplication can be implemented with limited number of shifts and additions. Design examples show that the proposed method can greatly reduce the design time and complexity of the Farrow structure while providing comparable phase and amplitude responses

Keywords

FIR filters; delay filters; digital filters; network synthesis; Farrow structure; additions; amplitude response; design time reduction; digital signals; fractional-delay digital FIR filters; fractional-delay digital filter; online tuning delay; phase response; shifts; sum-of-powers-of-two coefficients; Adders; Algorithm design and analysis; Delay estimation; Design methodology; Digital filters; Filter bank; Finite impulse response filter; Hardware; Polynomials; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Statistical Signal Processing, 2001. Proceedings of the 11th IEEE Signal Processing Workshop on

Print_ISBN

0-7803-7011-2

Type

conf

DOI

10.1109/SSP.2001.955357

Filename

955357