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宏蜂窝 /微蜂窝分层网络结构非常适合于含有范围较小 ,但业务密度较大的热点通信地区的移动通信区域 .区别于地面的分层结构 ,文中提出了平流层 /地面分层结构模型 ,并对这一结构下的反向链路码分多址 ( CDMA)系统容量进行了分析与仿真 .结果表明 ,平流层 /地面分层结构能够适合热点通信的需要 ,与地面分层结构相比 ,其反向链路系统容量较好 ,并且在微蜂窝半径增大时 ,系统容量性能明显优于地面分层结构 .
The structure of macrocell / microcell hierarchical network is very suitable for the mobile communication area that contains a small area but high traffic density hotspot communication area.Different from the layered structure of the ground, the stratosphere / ground layer structure model , And analyzed and simulated the capacity of reverse link code division multiple access (CDMA) system in this structure.The results show that the stratosphere / ground layer structure can meet the needs of hotspot communication, The system capacity of the reverse link is better than that of the terrestrial hierarchical structure when the microcell radius increases.