Plug-in prediction intervals for a special class of standard ARH(1) processes

This paper studies the asymptotic properties of a plug-in predictor, based on the formulation of a componentwise estimator of the autocorrelation operator, for a special class of standard autoregressive Hilbertian processes of order one (ARH(1) processes). In the Gaussian case, double asymptotic functional plug-in prediction intervals are derived. Some numerical examples are considered for illustration.