Title :
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
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;
Conference_Titel :
Communications, Computers and Signal Processing, 1993., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0971-5
DOI :
10.1109/PACRIM.1993.407208
