A tool for analyzing finite wordlength effects in fixed-point digital filter implementations

Author

Tawfik, A. ; Agathoklis, P. ; El-Guibaly, F.

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

Volume

1

fYear

1993

fDate

19-21 May 1993

Firstpage

116

Abstract

The software tool is implemented in the MATLAB environment. For a given discrete transfer function, the various implementation structures can be analyzed in terms of the existence of overflow oscillations, round-off error gain, and coefficient sensitivity. The main features of the package are described and applied to narrow-band IIR (infinite impulse response) filters. These examples demonstrate the usefulness of the software package in exploring the performance of different structures due to finite wordlength implementations of digital filters

Keywords

IIR filters; circuit analysis computing; digital arithmetic; limit cycles; poles and zeros; roundoff errors; sensitivity analysis; software tools; transfer functions; MATLAB environment; coefficient sensitivity; discrete transfer function; finite wordlength effects; fixed-point digital filter implementations; infinite impulse response; overflow oscillations; roundoff error gain; software package; software tool; Digital filters; Finite wordlength effects; IIR filters; MATLAB; Narrowband; Packaging; Roundoff errors; Software packages; Software tools; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Computers and Signal Processing, 1993., IEEE Pacific Rim Conference on

Conference_Location

Victoria, BC

Print_ISBN

0-7803-0971-5

Type

conf

DOI

10.1109/PACRIM.1993.407208

Filename

407208