| 荷叶状空间信道模型与MIMO多天线系统分析 |
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| 引用本文： | 朱慧娟,周杰,邵根富. 荷叶状空间信道模型与MIMO多天线系统分析[J]. 西安电子科技大学学报(自然科学版), 2018, 45(1): 135-139+144. DOI: 10.3969/j.issn.1001-2400.2018.01.024 |
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| 作者姓名： | 朱慧娟 周杰 邵根富 |
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| 作者单位： | (1. 南京信息工程大学 气象探测与信息处理重点实验室，江苏 南京 210044；2. 杭州电子科技大学 自动化学院，浙江 杭州 310018) |
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| 基金项目： | 国家自然科学基金资助项目(61471153，61771248)；江苏省高校自然科学基金重大资助项目(14KJA510001)；江苏省信息与通信工程优势学科建设资助项目；江苏省普通高校研究生创新计划资助项目(1344051601039) |
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| 摘 要： | 针对市郊移动通信环境，在三维空间域信道模型中分析和研究线阵列和环阵列多入多出多天线系统． 采用荷叶状空间信道模型，在计算波达信号概率密度函数的基础上，着重从天线阵列导向矢量和信道自相关函数两方面导出线阵列和环阵列天线阵元间的信号衰落相关性的表达式，阐明天线阵元间距和角度参数对信号衰落相关性的影响机理． 分析结果与实际信道测量结果相比较，信道容量与实际信道测量结果较为吻合． 天线阵元间距和波达信号角度扩展对多入多出多天线系统性能起到决定性作用．
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| 关 键 词： | 多入多出多天线 线阵列 环阵列 信号衰落相关性 到达角 |
| 收稿时间： | 2017-03-15 |
Lotus leaf geometric channel modeling and MIMO multi-antenna system performance |
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| ZHU Huijuan,ZHOU Jie,SHAO Genfu. Lotus leaf geometric channel modeling and MIMO multi-antenna system performance[J]. Journal of Xidian University, 2018, 45(1): 135-139+144. DOI: 10.3969/j.issn.1001-2400.2018.01.024 |
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| Authors: | ZHU Huijuan ZHOU Jie SHAO Genfu |
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| Affiliation: | (1. Key Lab. of Meteorological Observation and Information Processing, Nanjing Univ. of Information Science & Technology, Nanjing 210044, China;2. College of Automation, Hangzhou Dianzi Univ., Hangzhou 310018, China) |
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| Abstract: | A multiple input multiple output (MIMO) antenna system with the uniform linear array (ULA) and uniform circular array (UCA) in three dimensional suburb mobile communication environment is analyzed and investigated. The lotus leaf geometric channel model is proposed, and the probability density function of arriving waves is calculated. Then, expressions for signal correlations are derived in two ways, namely, from steering vectors of antenna arrays and autocorrelation functions of the fading channel, and the relationship between correlation with the spacing of antenna arrays and angular parameters is classified. The results are compared with those in actual channel environment, and it is shown that the channel capacity of the lotus leaf geometric channel model is in agreement with that of the latter. It is concluded that the deployment of antenna array spacing plays a decisive role in correlations between angular spreads of multipath signals. |
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| Keywords: | multiple input multiple output antenna array uniform linear array uniform circular array signal fading correlation angle of arrival |
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