The asymptotic distribution of the maximum likelihood estimator for a vector time series model with long memory dependence

A vector time series model with long-memory dependence is introduced. It is assumed that, at each time point, the observations are equi-correlated. The model is based on a fractionally differenced autoregressive process (long-memory) adjoined to a Gaussian sequence with constant autocorrelation. The maximum likelihood estimators for the parameters in the model are derived and their asymptotic distributions are obtained.Time series Long-memory dependence Maximum likelihood estimation Asymptotic inference