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3-D AR model order selection via rank test procedure

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4 Author(s)
Aksasse, B. ; Fac. of Sci. & Techniques Errachidia ; Stitou, Y. ; Berthoumieu, Y. ; Najim, Mohamed

This paper deals with the problem of three-dimensional autoregressive (3-D AR) model order estimation. We show that the information for the 3-D AR model order is implicitly contained in an appropriate matrix rank built from the autocorrelation function (ACF) of the underlying 3-D Gaussian process. Exploiting this property, we develop an algorithm to estimate the order (p1,p2,p3) corresponding to the quarter-space (QS) region of support. The proposed method is based upon a rank test procedure (RTP) using singular value decomposition (SVD) and solving nonlinear system equations. Numerical simulations are presented to illustrate the performances of the proposed algorithm

Published in:

Signal Processing, IEEE Transactions on  (Volume:54 ,  Issue: 7 )