| 采用传播图论建模方法的Massive MIMO室内场景传播特性 |
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| 引用本文： | 刘留,刘妍,雷勇,吴钰浩.采用传播图论建模方法的Massive MIMO室内场景传播特性[J].北京交通大学学报(自然科学版),2018,42(2):38-45. |
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| 作者姓名： | 刘留 刘妍 雷勇 吴钰浩 |
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| 作者单位： | 北京交通大学电子信息工程学院,北京100044;东南大学移动通信国家重点实验室,南京210096;北京交通大学电子信息工程学院,北京,100044 |
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| 基金项目： | 中央高校基本科研业务费专项资金(2017JBM306)，北京市科技新星计划项目(Z161100004916068)，国家自然科学基金面上项目(61471027)，东南大学移动通信国家重点实验室开放研究基金(2017D01)，北京市自然科学基金(L172030)Fundamental Research Funds for the Central Universities(2017JBM306)，Beijing Nova Program(Z161100004916068)，National Natural Science Foundation of China(61471027)，Research Fund of National Mobile Communications Research Laboratory |
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| 摘 要： | 大规模多天线(Massive MIMO)技术在基站端配置大规模天线阵列,能够大幅度提升数据传输速度和系统容量,实现无线传播信道中的空间和时间资源的最大化利用.有关Massive MIMO无线传播信道的研究,对大规模多天线的应用、系统的设计与部署具有重要意义.本文采用传播图论信道建模的方法,研究Massive MIMO在实际传播信道中的性能表现,既能很好的避免信道实测带来的繁重工作,又能有效反映Massive MIMO的无线信道衰落特性.分别在高频点6GHz和低频点1.472 5GHz对选定的室内传播场景进行了信道建模与仿真,由传播图论建模方法得到了信道冲激响应,并进行参数提取,分别从角度域和时延域分析了大规模多天线系统的信道传播特性,并通过分析信道奇异值扩展的分布,证明了实际传播环境中天线数目增多信道的正交性显著增强.
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| 关 键 词： | 无线通信 大规模多天线 传播图论 信道建模 信道传播特性 奇异值扩展 |
Massive MIMO propagation characteristics in indoor scenario based on propagation graph modeling |
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| LIU Liu,LIU Yan,LEI Yong,WU Yuhao.Massive MIMO propagation characteristics in indoor scenario based on propagation graph modeling[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2018,42(2):38-45. |
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| Authors: | LIU Liu LIU Yan LEI Yong WU Yuhao |
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| Abstract: | The massive multiple input and multiple output (Massive MIMO) system,equipped large-scale antenna array in the base station,can greatly improve the data transmission speed and the system capacity and achieve the maximum utilization of the time and space resources.It's of great significance for the application of large-scale antenna and the design of the system to research the wireless communication channel of the Massive MIMO.In this paper,a channel modeling approach based on propagation graph theory is adopted to study the performance of Massive MIMO in the actual propagation channel,which is efficient and able to avoid the heavy workload of practical measurement.For a certain scenario,the channel modeling and simulation is conducted at both 6 GHz and 1.472 5 GHz.The channel impulse response derived from the propagation graph modeling can be further used for parameter extraction.The propagation characteristics of Massive MIMO channel is analyzed from the angle domain,time domain and the singular value decomposition separately. |
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