Title :
A search for a parsimonious basis sequence approximation of time-varying, nonlinear systems
Author :
Green, Matthew ; Zoubir, Abdelhak M.
Author_Institution :
Australian Telecommun. Res. Centre, Curtin Univ. of Technol., Perth, WA, Australia
Abstract :
An approach for identifying time-varying nonlinear systems is presented. The time-variation of the system is approximated by a weighted combination of sequences from a given basis. In this case, to identify the system it is sufficient to estimate the time-invariant coefficients of the sequences. The focus of our investigation is on selecting these sequences to use in the approximation. We propose using a search method to determine which sequences contribute significantly to the approximation and thus lead to a parsimonious model that is able to characterise the system dynamics and time-variation together
Keywords :
Approximation theory; Identification; Modeling; Nonlinear systems; Search problems; Sequences; Time-varying systems; parsimonious basis sequence approximation; parsimonious model; search method; sequence selection; system dynamics; time-invariant coefficients; time-varying nonlinear systems; Australia; Kernel; Linearity; Nonlinear systems; Physiology; Satellites; Search methods; System identification; Telecommunication computing; Time varying systems;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.857048
