ARMA model order estimation based on the eigenvalues of the covariance matrix

An approach to model order determination based on the minimum description length (MDL) criterion is proposed and shown to depend on the minimum eigenvalues of a covariance matrix derived from the observed data. A selection procedure for estimating the model order by means of the MDL method is proposed. Examples are given to illustrate the significantly improved accuracy of the technique.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>