Title :
Finite wordlength effects in fixed-point 2-D digital filters
Author_Institution :
Dept. of Electr. Eng., Colorado Univ., Denver, CO, USA
Abstract :
The stability of 2D digital filters implemented with two´s complement quantization is investigated. The difference equation model is considered for the following cases: quantization after each product, and quantization after a complete sum of products. For both cases, sufficient conditions are established for asymptotic stability. The 2-D state-space Roesser´s model is also considered under two´s complement quantization, and a sufficient condition is derived for its stability
Keywords :
analogue-digital conversion; convergence of numerical methods; difference equations; two-dimensional digital filters; 2D digital filters; asymptotic stability; difference equation model; difference equation stability; filter stability; finite wordlength effects; fixed-point 2D digital filters; quantization; stability; state-space Roesser´s model; two´s complement quantization; Asymptotic stability; Difference equations; Digital filters; Filtering; Finite wordlength effects; Multidimensional systems; Quantization; Robust stability; Sufficient conditions; Transfer functions;
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
DOI :
10.1109/SECON.1994.324256
