天线物理特性对MIMO信道空域相关性的影响

doi:10.3969/j.issn.0255-8297.2016.03.002

应用科学学报 ›› 2016, Vol. 34 ›› Issue (3): 251-262.doi: 10.3969/j.issn.0255-8297.2016.03.002

天线物理特性对MIMO信道空域相关性的影响

薛翠薇¹, 朱秋明^1,2, 陈小敏¹, 廖志忠², 刘星麟¹

1. 南京航空航天大学江苏省物联网与控制技术重点实验室, 南京 211106;
2. 中国空空导弹研究院, 河南洛阳 471009

收稿日期:2015-07-01 修回日期:2015-12-03 出版日期:2016-05-30 发布日期:2016-05-30
通信作者: 朱秋明,副教授,研究方向:无线信道勘测、建模和模拟,E-mail:zhuqiuming@nuaa.edu.cn E-mail:zhuqiuming@nuaa.edu.cn
基金资助:
中国博士后科学基金(No.2013M541661);中央高校基本科研业务费青年科技创新基金(No.NS2015046,No.NS2016044);江苏省普通高校研究生科研创新计划项目基金(No.SJZZ150040);江苏省物联网与控制技术重点实验室基金(No.NJ20160027)资助

Impact of Antenna Characteristic on MIMO Channel Spatial Correlation

XUE Cui-wei¹, ZHU Qiu-ming^1,2, CHEN Xiao-min¹, LIAO Zhi-zhong², LIU Xing-lin¹

1. Jiangsu Key Laboratory of Internet of Things and Control Technologies, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China;
2. China Airborne Missile Academy, Luoyang 471009, Henan Province, China

Received:2015-07-01 Revised:2015-12-03 Online:2016-05-30 Published:2016-05-30

摘要/Abstract

摘要：

针对天线物理特性会对MIMO信道空域相关性产生影响的问题,分析耦合和极化效应的产生及影响机理,构建非均匀散射环境下综合天线物理特性的单极化MIMO信道模型,据此导出MIMO信号的空域相关性理论表达式,并针对3GPP SCM标准信道场景参数进行仿真.仿真结果表明,耦合效应随天线间距变小而更显著,极化因子则与不同极化天线组合有关,两者在一定程度上可降低MIMO信道的空域相关性,但均不能有效提高系统容量性能.

关键词: 天线极化, 多输入多输出, 信道模型, 空域相关性, 互耦效应

Abstract:

In view of the influence of physical characteristics of an antenna on spatial correlation of a MIMO channel, this paper establishes a MIMO channel model including both coupling and polarization by analyzing and modeling the mechanism of mutual coupling and antenna polarization. Based on this model, a theoretical expression of spatial correlation for the MIMO channel model is derived, and applied to 3GPP SCM standard channel propagation. Simulation results show that the mutual coupling effect becomes significant as the antenna spacing decreases, and the polarization factor varies due to different polarization angle combinations. Moreover, both mutual coupling and polarization can reduce spatial correlation to some degree, but they cannot improve system capacity.

Key words: mutual coupling, channel model, antenna polarization, multi-input multi-output (MIMO), spatial correlation

中图分类号:

TN98

薛翠薇, 朱秋明, 陈小敏, 廖志忠, 刘星麟. 天线物理特性对MIMO信道空域相关性的影响[J]. 应用科学学报, 2016, 34(3): 251-262.

XUE Cui-wei, ZHU Qiu-ming, CHEN Xiao-min, LIAO Zhi-zhong, LIU Xing-lin. Impact of Antenna Characteristic on MIMO Channel Spatial Correlation[J]. Journal of Applied Sciences, 2016, 34(3): 251-262.

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天线物理特性对MIMO信道空域相关性的影响

Impact of Antenna Characteristic on MIMO Channel Spatial Correlation

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