Performance Analysis of Large Intelligent Surfaces in Dense Millimeter-Wave Deployment

Large intelligent surfaces (LIS) are recently gaining considerable research interest due to their simplicity and effectiveness in turning passive antennas into smart transformer of wireless channel phases. In this paper, we use LIS to increase the coverage of millimeter-wave coordinated multi-point based cellular networks operating on 28 GHz. We first derive distribution functions of equivalent LIS-assisted channel for two cases of uplink MRC reception and opportunistic selective reception under independent Nakagami-m fading channels. Then, the performance analysis is presented in terms of outage probability and ergodic capacity. Finally, the simulation results show the impact of different parameters and correctness of our analytical analysis. For instance, the impact of different parameters such as transmit power consumption, number of passive antenna elements in LIS, and number of LIS towers on the system performance are investigated.