On covariance generating functions and spectral densities of periodically correlated autoregressive processes
Periodically correlated autoregressive nonstationary processes of finite order are considered. The corresponding Yule-Walker equations are applied to derive the generating functions of the covariance functions, what are called here the periodic covariance generating functions . We also provide close...
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Published in | Journal of applied mathematics and stochastic analysis Vol. 2006; pp. 1 - 17 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
John Wiley & Sons, Inc
2006
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Abstract | Periodically correlated autoregressive nonstationary processes of finite order are considered. The corresponding Yule-Walker equations are applied to derive the generating functions of the
covariance functions, what are called here
the periodic
covariance generating functions
. We also provide closed formulas
for the spectral densities by using the periodic covariance
generating functions, which is a new technique in the spectral
theory of periodically correlated processes. |
---|---|
AbstractList | Periodically correlated autoregressive nonstationary processes of finite order are considered. The corresponding Yule-Walker equations are applied to derive the generating functions of the covariance functions, what are called here the periodic covariance generating functions. We also provide closed formulas for the spectral densities by using the periodic covariance generating functions, which is a new technique in the spectral theory of periodically correlated processes. Periodically correlated autoregressive nonstationary processes of finite order are considered. The corresponding Yule-Walker equations are applied to derive the generating functions of the covariance functions, what are called here the periodic covariance generating functions . We also provide closed formulas for the spectral densities by using the periodic covariance generating functions, which is a new technique in the spectral theory of periodically correlated processes. |
Audience | Academic |
Author | Shishebor, Z. Nematollahi, A. R. Soltani, A. R. |
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Title | On covariance generating functions and spectral densities of periodically correlated autoregressive processes |
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