| 基于测量的大规模多天线无线信道时间色散特性分析 |
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| 引用本文： | 卢艳萍,陶成,刘留,刘凯,李泳志,艾渤.基于测量的大规模多天线无线信道时间色散特性分析[J].北京交通大学学报(自然科学版),2017,41(2). |
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| 作者姓名： | 卢艳萍 陶成 刘留 刘凯 李泳志 艾渤 |
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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;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 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金面上项目，中央高校基本科研业务费专项资金，东南大学移动通信国家重点实验室开放研究基金，北京市自然科学基金项目(4152043)National High-tech R&D Program of China (863 Program)，National Natural Science Foundation of China，Fundamental Research Funds for the Central Universities，Southeast University National Mobile Communications Research Laboratory Research Fund，Beijing Municipal Natural Science Foundation |
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| 摘 要： | 大规模多天线系统可以利用空间分集技术进一步挖掘空间域增益,从而大幅度提升无线通信系统能量效率和功率效率.真实可靠的信道模型是无线通信系统设计和实践的基础.本文基于大规模多天线系统的真实测量,研究了大规模多天线无线信道的时间色散特性,并对比了1.472 5GHz和4.45GHz两个中心工作频点下无线信道的多径时延功率分布、均方根时延和相干带宽等测量结果.结果证明:传统通信系统中广泛接受的平稳非相关散射的理论假设不成立,在大规模多天线系统中多径衰落呈现一定的相关性.
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| 关 键 词： | 无线信道 大规模多天线 信道测量 多径时延功率 均方根时延 相干带宽 |
Analyses of temporal dispersion of wireless channel for Massive MIMO based on channel measurements |
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| LU Yanping,TAO Cheng,LIU Liu,LIU Kai,LI Yongzhi,AI Bo.Analyses of temporal dispersion of wireless channel for Massive MIMO based on channel measurements[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2017,41(2). |
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| Authors: | LU Yanping TAO Cheng LIU Liu LIU Kai LI Yongzhi AI Bo |
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| Abstract: | The massive multiple input and multiple output (Massive MIMO) system can provide remarkable space diversity which greatly improves the spectrum and energy-efficiency.A reliable and realistic channel model serves as the enabling foundation for practical design and testing of the communication systems.The properties of Massive MIMO channel based on channel measurement are investigated.The measurement results of channel temporal dispersion characteristics are compared at 1.472 5 GHz and 4.45 GHz in terms of multipath time delay,root mean square (RMS) delay spread and correlation bandwidth.The results reveal that the fading is correlated in some degrees and that the assumptions of unrelated scattering (US) are not hold. |
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| Keywords: | wireless channel massive multiple input and multiple output channel measurements multipath time delay root mean square delay correlation bandwidth |
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