Low roundoff noise 2-D digital filters using residue feedback

Author

Agathoklis, P. ; Kanellakis, A.

Author_Institution

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

fYear

1994

fDate

10-13 Apr 1994

Firstpage

12

Lastpage

15

Abstract

The finite wordlength fixed point realization of a 2D digital filter, using residue feedback to minimize the output roundoff noise subject to l₂-scaling is considered. A new set of 2D filter invariants, called 2D residue modes, are defined which characterize the new low noise structure. There are cases where the sum of the 2D horizontal and vertical residue modes is less than the 2D horizontal and vertical second order modes and in such cases the proposed structure leads to lower roundoff noise than other techniques

Keywords

feedback; filtering and prediction theory; minimisation; roundoff errors; two-dimensional digital filters; 2D digital filter; 2D residue modes; finite wordlength fixed point realization; horizontal residue mode; low noise structure; output roundoff noise minimization; residue feedback; second order modes; vertical residue mode; Digital filters; Electronic switching systems; Fixed-point arithmetic; Hydrogen; Noise reduction; Noise shaping; Output feedback; Quantization; State feedback; State-space methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Southeastcon '94. Creative Technology Transfer - A Global Affair., Proceedings of the 1994 IEEE

Conference_Location

Miami, FL

Print_ISBN

0-7803-1797-1

Type

conf

DOI

10.1109/SECON.1994.324255

Filename

324255