Exact maximum likelihood estimation of structured or unit root multivariate time series models
Computational Statistics & Data Analysis
IEEE Transactions on Signal Processing
ICICS'09 Proceedings of the 7th international conference on Information, communications and signal processing
Symmetric Matrix Polynomial Equation: Interpolation Results
Automatica (Journal of IFAC)
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Computation of an ARMA covariance function is a common ingredient in analysis and synthesis of various problems in stochastic control, estimation, and signal processing. Several approaches can be used for this purpose. In this paper, we present an algorithm based on simple polynomial calculations. Compared with alternative strategies, it has small computational load, shows good numerical robustness, and can be extended to handle multivariable ARMA processes, even with complex-valued coefficients