北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2005, Vol. 28 ›› Issue (6): 30-33.doi: 10.13190/jbupt.200506.30.lüjg

• 论文 • 上一篇    下一篇

天线和传播对室内MIMO信道容量的影响

吕剑刚1,吕英华1,张洪欣1,梁静2   

  1. 1 北京邮电大学 通信网络综合技术研究所, 北京 100876; 2 中国人民解放军66083部队, 北京 102488
  • 出版日期:2005-12-28 发布日期:2005-12-28

Antenna and Propagation Effect on Capacity of Indoor MIMO Channel

LV Jiangang1,LV Yinghua1,ZHANG Hongxin1,LIANG Jing2   

  1. 1 School of Telecommunication and Network Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2 Unit 66083 of the Chinese People Liberation Army, Beijing 102488, China
  • Online:2005-12-28 Published:2005-12-28

摘要:

采用2维射线跟踪法分析了视距、非视距室内传播环境和天线阵列结构对多入多出(MIMO)系统容量补累积分布函数(CCDFS)的影响. 室内传播环境和天线阵列结构对MIMO系统容量CCDFS有重要的影响. 10%中断容量也表明,室内环境中有独立同分步(i.i.d.)瑞利信道容量大于线性阵容量,线性阵容量大于矩形阵容量或圆形阵容量的关系,而且视距环境中系统容量要低于非视距环境中系统容量. 结果表明,这些结论对合理设计MIMO系统有重要的意义.

关键词: 多入多出, 射线跟踪法, 容量补累积分布函数, 阵列结构, 中断容量

Abstract:

The effects on capacity complementary cumulative distribution functions (CCDFS) of multiple input multiple output (MIMO) channel caused by the different antenna array structures and indoor propagation environments of both line of sight (LOS) and nonline of sight (NLOS) cases are analyzed by using a 2D SBR (shooting and bouncing) ray -tracing method. Antenna array structures and indoor propagation environments affect the CCDFS significantly. 10% outage capacities show that in both LOS and NLOS indoor environments, there exist a fixed relationship that independent and identically distribution (i.i.d.) rayleigh channel capacities are larger than the capacities equipped with linear antenna array which are larger than the capacities equipped with rectangular antenna array or capacity equipped with circular antenna array. And the capacities of NLOS MIMO channel are larger than the capacities with LOS path. The results show these conclusions are very useful for designing MIMO system.

Key words: multiple input multiple output, ray tracing ; capacity complementary cumulative distribution functions; antenna array structure; outage capacity

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