Outage analysis of massive MIMO system

Abstract

In this paper, we investigates shadow fading impact on a multi-user massive multiple-input-multiple-output (MIMO) system. By deploying a large antenna array on the base station, the random channel vectors between users and base station antennas become pairwise orthogonal. This important property of massive MIMO makes small scale fading effect asymptotically vanish while large scale fading still remains. Based on this fact, we analyze the uplink achievable rate and cell coverage area under outage constraint considering log-normal shadow fading effect for both single-cell and multi-cell scenarios. Numerical results are used to evaluate the performance in the presence of shadow fading.