| MIMO无线通信的空间自由度模型 |
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| 引用本文： | 伍裕江,聂在平. MIMO无线通信的空间自由度模型[J]. 系统工程与电子技术, 2007, 29(8): 1217-1221 |
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| 作者姓名： | 伍裕江 聂在平 |
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| 作者单位： | 1. 电子科技大学电子工程学院,四川,成都,610054;广东通宇通讯设备有限公司,广东,中山,528437
2. 电子科技大学电子工程学院,四川,成都,610054 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 采用本征模式方法研究了多天线无线通信的空间自由度问题。通过求解本征积分方程,得到给定发射区域和接收区域下多天线无线通信系统的本征函数,从而给出了多天线通信的物理限制以及相应的物理解释;通过将无线信道划分为发射天线到发射端近端散射体、发射端近端散射体到接收端近端散射体以及接收端近端散射体到接收天线三部分,提出了一种空间自由度的计算模型,分析了散射体对空间自由度的作用,并对已有模型的结果作出物理解释。
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| 关 键 词： | 多天线系统 空间自由度 MIMO信道 本征模式 |
| 文章编号： | 1001-506X(2007)08-1217-05 |
| 修稿时间： | 2006-08-02 |
Novel model for the spatial degrees of freedom of MIMO wireless systems |
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| WU Yu-jiang,NIE Zai-ping. Novel model for the spatial degrees of freedom of MIMO wireless systems[J]. System Engineering and Electronics, 2007, 29(8): 1217-1221 |
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| Authors: | WU Yu-jiang NIE Zai-ping |
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| Abstract: | An eigen-mode method is adopted to investigate the spatial degrees of freedom for MIMO wireless communication systems.This method has a clear physical meaning and can be used to present the physical restriction of a MIMO system given the fixed transmitting and receiving volumes.By decomposing the wireless channel into three parts,that is,the part between the transmitting volume and local scatters,the part between two local scatters,the part between local scatters and receiving volume,the total degrees of freedom of MIMO systems thus can be solved conveniently.Moreover,the keyhole channel can be interpreted by this model. |
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| Keywords: | multi-element antenna system degrees of freedom MIMO channel eigen-mode |
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