基于最佳选择的星地协作系统中断概率

doi:10.11772/j.issn.1001-9081.2015.05.1234

计算机应用 ›› 2015, Vol. 35 ›› Issue (5): 1234-1237.DOI: 10.11772/j.issn.1001-9081.2015.05.1234

基于最佳选择的星地协作系统中断概率

陈刘伟, 梁俊, 朱巍, 张衡阳, 王轶

空军工程大学信息与导航学院, 西安 710077

收稿日期:2014-12-24 修回日期:2015-01-08 出版日期:2015-05-10 发布日期:2015-05-14
通讯作者: 陈刘伟
作者简介:陈刘伟(1990-),男,安徽安庆人,硕士研究生,主要研究方向:空天信息网络、协作通信; 梁俊(1962-),男,江苏南京人,教授,博士生导师,博士,主要研究方向:空天信息网络、数据链; 朱巍(1990-),男,湖南长沙人,硕士研究生,主要研究方向:空天信息网络、网络编码.
基金资助:
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).

Outage probability of hybrid satellite terrestrial cooperative system with best selection

CHEN Liuwei, LIANG Jun, ZHU Wei, ZHANG Hengyang, WANG Yi

College of Information and Navigation, Air Force Engineering University, Xi'an Shaanxi 710077, China

Received:2014-12-24 Revised:2015-01-08 Online:2015-05-10 Published:2015-05-14

摘要/Abstract

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.

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

Abstract:

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.

Key words: Hybrid Satellite-Terrestrial Cooperative System (HSTCS), Decode-and-Forward (DF), outage probability, Land Mobile Satellite (LMS)

中图分类号:

TN927

陈刘伟, 梁俊, 朱巍, 张衡阳, 王轶. 基于最佳选择的星地协作系统中断概率[J]. 计算机应用, 2015, 35(5): 1234-1237.

CHEN Liuwei, LIANG Jun, ZHU Wei, ZHANG Hengyang, WANG Yi. Outage probability of hybrid satellite terrestrial cooperative system with best selection[J]. Journal of Computer Applications, 2015, 35(5): 1234-1237.

参考文献

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基于最佳选择的星地协作系统中断概率

Outage probability of hybrid satellite terrestrial cooperative system with best selection

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