In this paper, a massive multiple-input-multiple-output (mMIMO) testbed that is capable of mimicking realistic 5G new radio (NR) base station (BS) beamforming performance has been utilised to gather experimental-based evidence of 5G BS RF-EMF exposure within a real-world indoor environment. The mMIMO testbed has up to 128 RF channels with user-programmable software defined radio (SDR) capability. The stochastic nature of the 5G NR mMIMO system has been statistically assessed by evaluating the spatial variation of the RF-EMF exposure surrounding the mMIMO testbed when taking into account different beam profiles and data rates. Several other factors that influence the RF-EMF of mMIMO system have also being considered.

翻译：在本文中,利用了能够模仿现实5G新无线电台(NR)成型性能的大型多投入-多输出试验台(MIMO)测试台,收集实验性证据,表明5G BS RF-EMF在现实的室内环境中暴露于5G BS RF-EMF, 以用户-可编程的软件界定无线电能力,MIMO测试台有多达128个RF信道, 5G NR MMIMO系统的随机性质通过评估MIMIMO试验台周围RF-EMF的暴露空间变化,同时考虑到不同的光谱和数据率,还考虑了影响MIMO系统的RF-EMF的其他一些因素。