A practical procedure for identifying time-varying nonlinear systems using basis sequence approximations

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A practical procedure for identifying time-varying nonlinear systems using basis sequence approximations

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Title: A practical procedure for identifying time-varying nonlinear systems using basis sequence approximations
Author: Ralston, J.C.; Boashash, B; Zoubir, A.M.
Abstract: We approximate a class of time-varying nonlinear models, called the time-varying Hammerstein series, using basis sequences in order to reduce the number of coefficients required in system modelling. The problem is motivated by the practical need to parsimoniously characterise time-varying nonlinear systems. A significant advantage of the approach is that only a single input-output record is required to obtain least-squares estimates of the model parameters. The judicious selection of basis sequence is also discussed. The method represents a simple and practical time-varying nonlinear system identification procedure. Examples are presented to demonstrate the usefulness of the technique.
URI: http://dx.doi.org/10.1109/icassp.1996.550176
http://hdl.handle.net/10576/10857
Date: 1996

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