Title :
Geometrical analysis of digital-filter overflow oscillations
Author_Institution :
Dept. of Electron. & Electr. Eng., King´´s Coll., London Univ., UK
Abstract :
The large-amplitude oscillations that can occur in recursive digital filters as a result of the overflow-characteristic of two´s complement arithmetic are analyzed by a geometrical approach that is shown to provide a straightforward and convenient method of deriving some general and analytical results. In particular, conditions for the existence of certain classes of overflow oscillation are obtained, with analytical expressions for states that initiate them
Keywords :
digital arithmetic; digital filters; filtering and prediction theory; oscillations; geometrical analysis; large-amplitude oscillations; overflow oscillations; recursive digital filters; two´s complement arithmetic; Clocks; Finite wordlength effects; Geometry; Linear systems; Nonlinear filters; Orbits;
Conference_Titel :
Circuits and Systems, 1992. ISCAS '92. Proceedings., 1992 IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0593-0
DOI :
10.1109/ISCAS.1992.229965
