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基于最佳选择的星地协作系统中断概率 被引量：2

Outage probability of hybrid satellite terrestrial cooperative system with best selection
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摘要 针对卫星信道的衰落特性和阴影效应,分析了一种星地协作系统(HSTCS),并通过对陆地卫星移动通信(LMS)信道进行分析得到其中断概率的闭环表达方法。在源节点(卫星)到目的节点(地面终端)间采用解码前传(DF)模式,目的节点将来自卫星和信噪比最大的中继节点的信号进行合并,并通过Matlab进行仿真。仿真结果表明,同直接传输相比,该系统能够通过获得分集增益,有效提高系统中断性能。 Focusing on the fading and shadowing effect in satellite channel, a Hybrid Satellite-Terrestrial Cooperative System（ HSTCS） was presented, and the closed-form expression of the outage probability was evaluated using the Land Mobile Satellite（ LMS） channel. A selective Decode-and-Forward（ DF） scheme was implemented between a source node（ the satellite） and a destination node（ a terrestrial station）, and signals from the satellite and terrestrial relay were combined at destination. The analytical expression of the outage probability was verified with the Matlab simulation. The results show that the system can improve the outage performance through the diversity gain, compared with the direct transmission.
作者 陈刘伟 梁俊 朱巍 张衡阳 王轶
机构地区 空军工程大学信息与导航学院
出处 《计算机应用》 CSCD 北大核心 2015年第5期1234-1237,共4页 journal of Computer Applications
基金 国家自然科学基金资助项目(60972042 61202490) 陕西省自然科学基金资助项目(2013ZC15008) 航空科学基金资助项目(2012ZC15008)
关键词 星地协作系统 解码前传 中断概率 陆地卫星移动通信 Hybrid Satellite-Terrestrial Cooperative System （HSTCS） Decode-and-Forward （DF） outage probability Land Mobile Satellite （LMS）
分类号 TN927 [电子电信—通信与信息系统]
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参考文献11

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二级参考文献21

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2015年 第5期

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