I. Introduction
The rapid increase in mobile data users has created enormous challenges for service providers to overcome some bandwidth shortages, thus making everyone to move towards high frequency bands. Millimeter wave communication systems which operates in 30GHz–300GHz band is now the next biggest technology which is expected to support high data rates. Millimeter - wave systems allow larger bandwidth which thereby offer high data rate [1]–[4]. Growing number of users in both rural and urban areas demands a high capacity MIMO system. This high capacity can be facilitated by Massive MIMO systems.