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Extension of the matrix Bartlett's formula to the third and fourth order and to noisy linear models with application to parameter estimation

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2 Author(s)
J. -P. Delmas ; Dept. CITI, Inst. Nat. des Telecommun., Evry, France ; Y. Meurisse

This paper focuses on the extension of the asymptotic covariance of the sample covariance (denoted Bartlett's formula) of linear processes to thirdand fourth-order sample cumulant and to noisy linear processes. Closed-form expressions of the asymptotic covariance and cross-covariance of the sample second-, third-, and fourth-order cumulants are derived in a relatively straightforward manner, thanks to a matrix polyspectral representation and a symbolic calculus akin to a high-level language. As an application of these extended formulae, we underscore the sensitivity of the asymptotic performance of estimated ARMA parameters by an arbitrary third- or fourth-order-based algorithm with respect to the signal-to-noise ratio, the spectra of the linear process, and the colored additive noise.

Published in:

IEEE Transactions on Signal Processing  (Volume:53 ,  Issue: 8 )