Interference and Outage Probability Analysis for Massive MIMO Downlink with MF Precoding

This letter analyzes the user-interference and outage probability for single-cell multi-user massive multi-input-multi-output (MIMO) systems with matched-filter (MF) precoding. Existing performance studies on massive MIMO systems have focused on the sum-rate by deriving the asymptotic deterministic equivalence. In this work, we treat the user-interference as random, and derive a tight closed-form approximation for the distribution of the interference power. This enables the analysis of the outage probability. The derived results are shown to have accurate match with the simulation.

I. Introduction

In Recent years, massive MIMO systems, where the base station (BS) is equipped with hundreds antennas, emerge as one key concept for the next generation wireless systems. Massive MIMO can achieve all merits of conventional MIMO systems with a much greater scale [1]. In addition, as the number of BS antennas increases to infinity, the intra-cell interference and the noise can be averaged out due to the law of large numbers [2]. There have been many results on different aspects of massive MIMO [3]–[6].