Title :
New stability test theorems for two-dimensional IIR digital filters
Author_Institution :
Inst. of Inf. Sci., Northern Jiaotong Univ., Beijing, China
Abstract :
In the paper, new stability test theorems for 2D IIR digital filters are proposed, which can simplify the algebraic test procedure, especially for the test of high order 2D digital filters. The authors directly use the modified 1D Schur test that is revised to test zeros in |z|/spl les/1 instead of searching real roots in all x /spl isin/[-1,1]. The test is a very exact test and can overcome the drawbacks of other algebraic or nonalgebraic test methods.<>
Keywords :
filtering and prediction theory; poles and zeros; stability; two-dimensional digital filters; algebraic test procedure; high order 2D digital filters; modified 1D Schur test; stability test theorems; two-dimensional IIR digital filters; zeros; Digital filters; Digital systems; Polynomials; Stability; System testing;
Conference_Titel :
TENCON '93. Proceedings. Computer, Communication, Control and Power Engineering.1993 IEEE Region 10 Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-1233-3
DOI :
10.1109/TENCON.1993.328057
