Some Results in Periodic Autoregression
周期自回归的若干结果
Several properties of a periodic autoregressive process {xs} are examined by considering a related stationary multivariate autoregressive process. The properties of interest include: the representation of xs as an infinite linear combination of independent, periodically distributed random variables, constraints on the parameters which permit such a representation, the covariance and spectral properties of {xs}, and the asymptotic behaviour of cumulative sums of {xs} and of…