65.5 GHz毫米波信道测量与分析  

Millimeter wave channel measurement and analysis in 65.5 GHz

作　　者：侯春枝 刘永胜 吴振森 李清亮[2] 卢昌胜[2] 林乐科[2] 陈安涛 张玉强 HOU Chunzhi;LIU Yongsheng;WU Zhensen;LI Qingliang;LU Changsheng;LIN Leke;CHEN Antao;ZHANG Yuqiang(School of Physics and Optoelectronic Engineering,Xidian University,Xi’an 710071,China;National Key Laboratory of Electromagnetic Environment,China Research Institute of Radiowave Propagation,Qingdao 266107,China;China Electronics Technology Instruments Co.,Ltd.,Qingdao 266555,China)

机构地区：[1]西安电子科技大学物理与光电工程学院,西安710071 [2]中国电波传播研究所电波环境特性及模化技术重点实验室,青岛266107 [3]中电科仪器仪表有限公司,青岛266555

出　　处：《电波科学学报》2021年第4期630-636,共7页Chinese Journal of Radio Science

基　　金：国家自然科学基金(61971385,61901424,61401342)。

摘　　要：毫米波技术和大规模多输入多输出天线技术是5G移动通信系统的关键技术.为了研究60 GHz毫米波频段宽带信道特性,在会议室进行了65.5 GHz频段的信道测量活动.首先基于方向性路损模型,研究路径损耗指数和阴影衰落特性;然后基于空间交替广义期望最大化(space-alternating generalized expectation-maximization,SAGE)参数化分析算法,提取水平到达角、时延和幅度信息;最后根据多径分量距离方法,对多径分量进行分簇,分析均方根时延扩展和均方根角度扩展特性.实测结果表明:视距情况下,方向性路损在固定截距和浮动截距两种方式的拟合下与自由空间路径损耗模型相近;65.5 GHz下环境中的簇具有稀疏性;时延扩展和角度扩展的结果与第三代合作伙伴计划(the 3rd Generation Partnership Project,3GPP)的结果相近.本文提供的信道参数对于5G毫米波60 GHz频段信道建模和仿真具有重要参考意义.Millimeter wave technology and massive multiple-input multiple-output antenna technology are the key technologies of the 5G mobile communication system.In order to study the broadband channel characteristics of the millimeter wave frequency band above 60 GHz,channel measurement activities in 65.5 GHz were carried out in a conference room.Based on the directional path loss model,this paper studies the path loss exponent and shadow fading characteristics firstly,and then based on the space-alternating generalized expectation-maximization(SAGE)parameterized analysis algorithm,the horizontal angle of arrival,delay and amplitude information are extracted,and finally based on the multipath component distance method,root mean square delay spread and root mean square angle spread characteristics are analyzed.The results show the directional path loss is similar to the free space path loss model in the methods of fixed intercept and floating intercept in the line-of-sight.The sparseness of the clusters in the environment is shown in 65.5 GHz.The time delay Expansion and angle expansion are similar to the results of the 3rd Generation Partership Project(3GPP).The channel parameters which are provided in this article have important reference significance for the channel modeling and simulation of 5G millimeter waves above 60 GHz.

关 键 词：毫米波 信道建模 SAGE算法 方向性路损模型 多径分量距离 信道参数 

分 类 号：TN928[电子电信—通信与信息系统]