Title :
On finite word effects in two-dimensional multirate periodically time-varying filters
Author :
McLernon, Desmond C.
Author_Institution :
Dept. of Electron. & Electr. Eng., Leeds Univ., UK
Abstract :
Two-dimensional multirate digital filters, that have explicit periodic variations of the filter coefficients, are defined. Linear time-invariant mathematical models are introduced to describe the effect of finite computer wordlength in such systems. Input quantisation, internal product quantisation, and coefficient quantisation are all considered. Direct-form and state-space structures are examined, with examples given to illustrate the theory
Keywords :
filtering theory; quantisation (signal); state-space methods; time-varying filters; two-dimensional digital filters; 2D digital filters; coefficient quantisation; direct-form structures; explicit periodic variations; filter coefficients; finite computer wordlength; finite word effects; input quantisation; internal product quantisation; linear time-invariant mathematical models; multirate periodically time-varying filters; state-space structures; two-dimensional time-varying filters; Arithmetic; Digital filters; MIMO; Mathematical model; Nonlinear filters; Periodic structures; Quantization; Time varying systems; Two dimensional displays;
Conference_Titel :
Circuits and Systems, 1995., Proceedings., Proceedings of the 38th Midwest Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-2972-4
DOI :
10.1109/MWSCAS.1995.504482
