摘要
为了研究5G室内走廊环境的毫米波传输特性,通过射线跟踪仿真方法预测了室内走廊环境下73 GHz毫米波MIMO信道特性。介绍了实验的仿真环境和射线跟踪仿真预测的实验方法和具体参数设置。研究了室内走廊环境下73 GHz毫米波MIMO信道的路径损耗、RMS时延扩展和MIMO信道容量变化。发现了路径损耗斜率和RMS时延数值较小。研究MIMO容量随距离变化时发现,收发机沿走廊纵向方向中间处会产生容量峰值,主要是由于该处散射丰富,NLOS分量大。研究MIMO容量特性发现增大天线间距和增大天线阵列规模可以提升容量,但是采用4×64 Massive MIMO相对于采用4×4 MIMO时容量提升较为有限。实验证实了73 GHz毫米波MIMO可以用于室内走廊环境。
In order to study the millimeter-wave transmission characteristics of 5 G indoor corridor environment,the ray tracing simulation method is adopted to predict the characteristics of 73 GHz millimeter wave MIMO channels.This paper introduces the experimental simulation environment,the experimental methods and specific parameter settings of ray tracing simulation methods.Then the path loss,RMS delay spread and channel capacity variation of the 73 GHz millimeter wave MIMO channel in the indoor corridor environment are investigated,where the path loss slope and RMS delay are small.When the MIMO capacity changes with the distance,it is found that there is a peak capacity in the middle of the longitudinal direction of the corridor,mainly due to the rich scattering and NLOS components.It is also found that the capacity can be enhanced via increasing the antenna spacing and the antenna array sizes,while 4×64 Massive MIMO has limited capacity improvement compared with 4×4 MIMO.Experiments have shown that 73 GHz millimeter wave MIMO can be used in indoor corridor environments.
作者
邵斌
张仿琪
郑国莘
SHAO Bin;ZHANG Fangqi;ZHENG Guoxin(Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University,Shanghai 200444,China;Tongji University Maglev Transportation Engineering R&D Center,Tongji University,Shanghai 201804,China;Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication,Shanghai University,Shanghai 200444,China;Shanghai Institute of Advanced Communication and Data Science,Shanghai University,Shanghai 200444,China)
出处
《移动通信》
2020年第2期76-81,共6页
Mobile Communications
基金
国家自然科学基金面上项目(61871261)。
