The Study of 5G Massive MIMO End-to-End MPAC Test Solution

Due to the large demand of high data rate and low latency in mobile service, 5G network has been commercially deployed in the many countries, e. g., China, US, Korea and etc.. Massive multiple input multiple output (MIMO) and hybrid beamforming techniques are observed as the key enhancement in the physical layer. Therefore, how to accurately measure the data throughput between massive MIMO gNB and user equipment (UE) under channel fading conditions has drawn much attentions in recent years. This paper introduces a novel simplified bidirectional 3D channel reproducing method for multi-probe anechoic chamber, in which the channel parameters are co-generated by the phase shift box and channel emulator. The simulation and test results show that the proposed method achieves similar performance compared with the whole channel emulator solution and meanwhile significantly reduces the cost of instruments.