Title :
Recursive FIR filter structures on FPGA
Author :
Taurén, Tarja ; Vainio, Olli ; Lehto, Raija
Author_Institution :
Dept. of Comput. Syst., Tampere Univ. of Technol., Tampere, Finland
Abstract :
A new approach to piecewise-polynomial approximation and recursive implementation structures for linear-phase Finite Impulse Response (FIR) filters have been recently proposed. In this paper, we describe hardware prototype implementations of the new structures for all four types of linear-phase FIR filters using a Field Programmable Gate Array (FPGA) based platform. Narrowband lowpass filters and narrowband differentiators are used as design examples to demonstrate the functionality and efficiency of the implementations. The required wordlength and resource usage is analyzed.
Keywords :
FIR filters; field programmable gate arrays; low-pass filters; piecewise linear techniques; recursive filters; FPGA; field programmable gate array; linear-phase finite impulse response filters; narrowband differentiators; narrowband lowpass filters; piecewise-polynomial approximation; recursive FIR filter structures; Arithmetic; Digital filters; Digital signal processing; Field programmable gate arrays; Finite impulse response filter; Hardware; Narrowband; Polynomials; Prototypes; Shape; FPGA; Filter structure; finite impulse response (FIR) digital filters; piecewise polynomial;
Conference_Titel :
NORCHIP, 2009
Conference_Location :
Trondheim
Print_ISBN :
978-1-4244-4310-9
Electronic_ISBN :
978-1-4244-4311-6
DOI :
10.1109/NORCHP.2009.5397818
