A note on linear processes with tapered innovations

Abstract

In the paper we consider the partial sum process ${\sum }_{k=1}^{[nt]}{X}_k^{(n)}$, where $\{X_k^{(n)},k\in Z\},n\ge 1,$ is a series of linear processes with innovations having heavy-tailed tapered distributions with tapering parameter $b_n$ depending on $n$. It is shown that, depending on the properties of a filter of a linear process under consideration and on the parameter $b_n$ defining if the tapering is hard or soft, the limit process for such partial sum process can be fractional Brownian motion or linear fractional stable motion.