Title :
Nonperiodic modes in two-dimensional (2-D) recursive digital filters under finite wordlength effects
Author :
Bauer, P. ; Jury, E.I.
Author_Institution :
Dept. of Electr. & Comput. Eng., Notre Dame Univ., IN, USA
fDate :
7/1/1989 12:00:00 AM
Abstract :
Two-dimensional recursive digital filters under finite wordlength and zero input are shown to exhibit unstable responses, which do not satisfy the classical definitions for two-dimensional periodicity. This is in contrast to the one-dimensional case, where instabilities caused by finite-wordlength effects are always periodic for a finite-order filter. The consequences for multidimensional stability tests are mentioned
Keywords :
stability; two-dimensional digital filters; 2-D filters; finite wordlength effects; multidimensional stability tests; nonperiodic modes; recursive digital filters; two-dimensional periodicity; unstable responses; zero input; Circuits and systems; Computational geometry; Concurrent computing; Digital filters; Finite wordlength effects; Merging; Nonlinear filters; Parallel algorithms; Sorting; Two dimensional displays;
Journal_Title :
Circuits and Systems, IEEE Transactions on
