Abstract
In this paper, we investigate performance of an ultra-dense downlink millimeter wave (mm-Wave) coordinated multi-point (CoMP) system with opportunistic cell selection. The access links are modeled by concatenation of random blockage and Nakagami-m channel. After deriving channel distributions, we find closed form formulas for outage probability of the mobile user suffered by the interference. We show that the effects of both blockage and interference should be taken into account. As a feasible solution to tackle these impairments in mm-Wave based 5G and Beyond network, we increase the number of associated base stations to serve the CoMP user.