Performance Analysis of Indoor Distributed Massive MIMO Based on Channel Measurements at 3.5 GHz

Massive multiple-input multiple output (MIMO) is among the potential technologies to meet the expected performance of future wireless communication systems. There are two configurations of massive MIMO deployment: centralized and distributed configurations, called Cm-MIMO and Dm-MIMO respectively. The second configuration is shown to be the best choice of massive MIMO deployment when the antenna arrays are properly arranged. In this paper, we present an experimental analysis of uplink Dm-MIMO performance in an indoor environment considering maximum ratio combining (MRC), zero forcing (ZF), and minimum square error (MMSE) combining methods. Performance evaluation has been carried out in terms of the spectral efficiency and the user fairness based on indoor channel measurements.