摘要
近些年来,气象背景下的城市无线通信状况受到了各界科研学者们的广泛研究。针对城市降雨在5 G移动通信环境中的影响,研究一种三维空间多天线几何信道模型,并数值推导发射水平角度、发射竖直角度、接收水平角度和接收竖直角度的边缘概率密度函数。结合信道模型的几何传输路径,推导两条不同非直达路径的空间互相关特性,分析由于发射端和接收端的运动而造成的多普勒功率谱分布。仿真结果表明,提出的三维空间几何信道模型能够有效地用来描述城市降雨的移动通信环境。
In recent years,the status of urban wireless communication under the meteorological background has been widely studied by researchers from all walks of life.This paper presents a novel geometry-based 5 G multiple-input multiple-output scattering channel model for rainfall communications.In the channel model presented in this paper,we numerically derive the marginal probability density function of azimuth angle of departure,elevation angle of departure,azimuth angle of arrival and elevation angle of arrival.Combined with the geometric transmission path of the channel model,the spatial cross-correlation characteristics of two different non-line-of-sight paths were derived to analyze the doppler power spectrum distribution caused by the movement of the transmitter and receiver.The simulation results show that the multiple-input multiple-output channel model proposed in this paper can be effectively used to describe the mobile communication environment of urban rainfall.
作者
侯天宇
周杰
朱静思
赵敏
Hou Tianyu;Zhou Jie;Zhu Jingsi;Zhao Min(Key Laboratory of Meteorological Observation and Information Processing,Nanjing University of Information Science and Technology,Nanjing 210044,China;Tianjin Meteorological Bureau,Tianjin 300000,China;Department of Electronic and Electrical Engineering,Niigata University,Xinxie 950-2181,Japan;Hydrology Bureau of Haihe River Water Conservancy Commission,MWR,Tianjin 300170,P.R.China)
出处
《电子测量技术》
2020年第2期21-25,共5页
Electronic Measurement Technology
基金
国家自然科学基金面上项目(61471153和61771248)
江苏省高校自然科学基金重大项目(14KJA510001)资助。
关键词
降雨环境
发射角度
接收角度
时域相关特性
多普勒频偏
rainfall communications
angle of departure
angle of arrival
space correlation functions
doppler power spectral density
