5G通信中的视距信号大气衰落特性研究  

Research on Atmospheric Fading Characteristics of LOS Signal in 5G Communications

作　　者：刘西川[1] 贺彬晟 印敏[1] 高太长[1] 宋堃[1] LIU Xichuan;HE Binsheng;YIN Min;GAO Taichang;SONG Kun(College of Meteorology and Oceanography,National University of Defense Technology,Nanjing 211101,China)

机构地区：[1]国防科技大学气象海洋学院,江苏南京211101

出　　处：《移动通信》2018年第9期9-15,共7页Mobile Communications

基　　金：国家自然科学基金项目(41505135;41475020);江苏省自然科学基金(BK20150708)

摘　　要：下一代5G通信网络将频段扩展到1 GHz—100 GHz,而已有微波传播模型基于经验假设,精细化结构不足,针对这个问题,建立大气精细化模型并定量分析了大气气体、降水、云雾和沙尘导致的视距信号衰落特性。研究表明,不同相态的降水、水雾和沙尘对高频信号存在强烈衰减,尤其是降水在6 GHz以下的衰减也不能忽略,可为5G通信的网络优化、通信基站的功率控制、利用5G信号衰落反演大气参数等方面提供基本参考。The frequency band of the next-generation 5G communication networks expands to 1 GHz—100 GHz. The existing microwave propagation models based on the empirical assumptions are with insufficient refined structures. According to this problem, the refined atmospheric model is established, and then the fading of LOS signals caused by gas, precipitation, cloud and fog, dust are analyzed quantitatively. The results show that the rainfall, snowfall, water fog and sand have a significant influence on the high frequency microwave, especially for that the attenuation induced by rainfall below 6 GHz. This paper can provide a basic reference to the network optimization of 5G communication, power control of base station, inversion of atmospheric parameters by 5 G signals.

关 键 词：5G通信 大气衰落 大气粒子 谱分布 

分 类 号：TN929.5[电子电信—通信与信息系统]