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GEO双极化多波束卫星移动通信系统信道建模

Chinese High Technology Letters(2015)

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Abstract
研究了采用双极化数字多波束阵列天线的地球同步轨道(GEO)卫星移动通信(MSC)系统的统计特性,建立了多用户多波束系统统计模型,进而利用该模型给出了计算机仿真方法.通过仿真揭示了用户所处环境、用户位置分布、天线交叉极化鉴别度及莱斯因子等因素对系统平均频谱效率的影响.仿真结果显示,系统以重阴影用户为主要服务对象时,平均频谱效率明显减小,用户分布越靠近波束中心频谱效率越大,高莱斯因子信道天线交叉级化鉴别度对频谱效率影响很大.
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Key words
mobile satellite communications (MSC),dual-polarized phased array antenna,multi-user multi-input multi-output,statistical model
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