Precise analytical model for MRT precoded massive MIMO

Abstract

This paper expands an analytical formulation of maximal ratio transmission (MRT) precoded massive multiple-input multiple-output (MIMO) systems. Evaluating performance on massive MIMO systems where both base station (BS) and user terminals (UTs) have array antennas could impose impractical computation complexity. The existing work derived the power distribution of inter-user interference (IUI) but that of the desired signal was treated as fixed. This paper enhances its modeling accuracy by deriving the latest. The consistency of the proposed model is confirmed by comparing it to the simulation results.