Nonparametric Etimation of a Time-variant System: an Experimental Study of B-splines and the Regularization Based Smoothing Vrije Universiteit Brussel
In this work linear time varying systems are nonparametrically estimated in the time domain. The key idea is that the classical -one dimensional- impulse response function (IRF) can be extended to a two dimensional form to describe the time varying behavior. Unlike linear time invariant systems where the IRF is unique, the time varying impulse response is not restricted to only one possibility for given input and output signals. To decrease this ...