Title :
An optimal order structure for 2-D digital filters
Author :
Zilouchian, Ali ; Szabo, Bela
Author_Institution :
Dept. of Electr. Eng., Florida Atlantic Univ., Boca Raton, FL, USA
Abstract :
The model approximation as well as implementation of 2D recursive separable-in-denominator (RSD) digital filters with fixed-point arithmetic are investigated. A minimum-order structure is proposed based on the optimality condition of an error criteria due to both approximation and implementation. In order to reduce the number of multiplications for an optimal order realization, a class of second-order structures is proposed. This class of realizations presents a good compromise between low round-off noise, order reduction, number of multipliers and hardware complexity
Keywords :
digital arithmetic; minimisation; recursive filters; roundoff errors; two-dimensional digital filters; 2D recursive separable-in-denominator digital filters; error criteria; fixed-point arithmetic; hardware complexity; implementation; minimum-order structure; model approximation; multiplications; optimal order realization; optimal order structure; order reduction; round-off noise; second-order structures; Control systems; Digital filters; Digital signal processing; Estimation theory; Fixed-point arithmetic; Hardware; Noise reduction; Quantization; State-space methods; Transfer functions;
Conference_Titel :
Southcon/95. Conference Record
Conference_Location :
Fort Lauderdale, FL
Print_ISBN :
0-7803-2576-1
DOI :
10.1109/SOUTHC.1995.516072
