Title :
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
fDate :
6/23/1905 12:00:00 AM
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;
Conference_Titel :
Statistical Signal Processing, 2001. Proceedings of the 11th IEEE Signal Processing Workshop on
Print_ISBN :
0-7803-7011-2
DOI :
10.1109/SSP.2001.955357
