TITLE:
FIR System Identification Using Feedback
AUTHORS:
T. J. Moir
KEYWORDS:
LMS; Feedback; System Identification
JOURNAL NAME:
Journal of Signal and Information Processing,
Vol.4 No.4,
November
1,
2013
ABSTRACT: This paper describes a new approach to finite-impulse (FIR) system identification. The method differs from the traditional stochastic approximation method as used in the traditional least-mean squares (LMS) family of algorithms, in which we use deconvolution as a means of separating the impulse-response from the system input data. The technique can be used as a substitute for ordinary LMS but it has the added advantages that can be used for constant input data (i.e. data which are not persistently exciting) and the stability limit is far simpler to calculate. Furthermore, the convergence properties are much faster than LMS under certain types of noise input.