电波科学学报2017，Vol.32Issue(5)：545-552,8.DOI:10.13443/j.cjors.2017052201
基于测量的6GHz频段大规模多天线信道容量的研究
Capacity on channel measurement at 6 GHz for massive MIMO system
摘要
Abstract
At present,most of the studies on massive multiple-input multiple-output (MIMO) system channel characteristics are based on the condition of Rayleigh channels that is independent and identically distributed (i.i.d.).In this case,the propagation environment is "favorable",which means the sub-channels are orthogonal.However,the propagation conditionin real physical channelis not "favorable",therefore,it is of great significance to conduct the research of massive MIMO channel characteristics under a " unfavorable" condition.Based upon an outdoor wireless channel measurement conducted in campus at 6 GHz,the orthogonality between the sub-channels in real environment is discussed in this thesis by applying singular value decomposition.In addition,the channel capacities of different scenarios have been calculated and compared.The analysis results demonstrate that the orthogonality is obviously improved with more antennas while the channel capacity increases evidently when the number of antennas at the transmitter is ten times that of the receiver.Compared with the i.i.d.Rayleigh channels,the sub-channelsin real propagation environmentare not completely orthogonal and channel capacity is differentiated which indicates that massive MIMO could not achieve fullgains with "unfavorable"propagation condition.关键词
大规模MIMO/适宜传播/奇异值/信道测量/信道容量Key words
massive MIMO/favorable propagation/singular value/channel measurement/channel capacity分类
信息技术与安全科学引用本文复制引用
雷勇,刘留,陶成,吴钰浩,刘妍,周涛..基于测量的6GHz频段大规模多天线信道容量的研究[J].电波科学学报,2017,32(5):545-552,8.基金项目
北京市科技新星计划(Z161100004916068) （Z161100004916068）
中央高校基本科研业务费专项(2017JBM306) （2017JBM306）
国家自然科学基金(61471027) （61471027）
东南大学移动通信国家重点实验室开放研究基金(2017D01) （2017D01）
北京市自然科学基金(4152043) （4152043）
