基于地面中继的卫星通信系统性能分析  

Performance analysis of satellite communication systems with the terrestrial relay

作　　者：高自新[1] 阮晓刚 

机构地区：[1]中国电子科技集团公司第五十四研究所,石家庄050081 [2]中国电子设备系统工程公司,北京100044

出　　处：《北京交通大学学报》2016年第3期14-18,共5页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金资助项目(61371068)

摘　　要：研究了基于地面中继的卫星通信系统的上行链路性能,其中用户到地面中继的信道服从Rayleigh分布,而地面中继到卫星的链路服从一般化κ-μshadowed分布.首先得到了放大转发机制下的端到端等效信噪比,使用特殊函数推导了系统中断概率的准确闭合表达式,给出了系统在不同的调制方式下的平均误码率计算公式.最后通过Monte Carlo仿真验证了所推导公式的正确性,并揭示了信道参数和系统参数对基于地面中继的卫星通信系统性能的影响,为实际系统设计提供有益参考.The performance of satellite communication systems with the terrestrial relay is investigated in this paper.The link between users and the terrestrial relay is modeled by Rayleigh distribution,while the link between satellites and the terrestrial relay is modeled by generalizedκ-μshadowed distribution.The end-to-end signal-to-noise ratio is derived for amplified and forward relaying scheme.The exact closed-form outage probability expression is obtained by using special functions.Moreover,the exact average bit error rate expression is derived for different modulation methods.Finally,Monte Carlo simulation is provided to verify the derived expressions.The effect of system and fading parameters on system performance is addressed to provide useful guide for practical system design.

关 键 词：卫星通信 衰落信道 中继通信 中断概率 误码率 

分 类 号：TN927.2[电子电信—通信与信息系统]