功率约束下的星地协作网络中断概率分析  

Outage Probability Analysis of Hybrid Satellite-Terrestrial Cooperative Networks with Power Constraints

作　　者：黄爱军[1] 喻火根[1] HUANG Aijun;YU Huogen(Southwest China Institute of Electronic Technology,Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2020年第10期1163-1168,共6页Telecommunication Engineering

摘　　要：针对星地协作网络,考虑中继节点转发卫星节点信号时会受发射功率和干扰功率约束,提出了一种基于中继节点与目的节点间链路最大信噪比准则来选择中继节点的放大转发部分中继选择策略。在卫星链路遭受阴影莱斯衰落和地面链路遭受瑞利衰落情况下,推导出系统中断概率下界的闭合表达式。仿真结果表明了理论分析的正确性,并展示了不同阴影莱斯信道参数、不同中继数目、不同功率约束对中断概率的影响。In consideration of transmit power constraint and interference power constraint of relay nodes,a partial relay selection strategy based on amplify and forward(AF)is proposed for relay nodes selection in hybrid satellite-terrestrial cooperative networks(HSTCN).The strategy selects the relay node based on maximum signal-to-noise ratio of link between a relay node and a destination node.When satellite links suffer shadowing-Rician fading and terrestrial links suffer Rayleigh fading,the lower bound on outage probability is derived.Numerical results are shown to validate the accuracy of the analytical results,and display the impacts of different shadowing-Rician channel parameters,different relay number and different power constraints on outage probability.

关 键 词：星地协作网络 功率约束 放大转发 部分中继选择 阴影莱斯衰落 中断概率分析 

分 类 号：TN927[电子电信—通信与信息系统]