基于选择合并的空天地一体化网络中断性能分析

Space-Space-Ground Integrated Network Interruption Performance Analysis Based on Selective Merging

近年来,无人机通信在无线通信领域显示出广阔的应用前景。研究了基于无人机中继辅助的卫星通信系统中断性能。首先,在卫星和地面站存在直达径,而无人机中继采用译码转发的情况下,得到了经过选择合并后的系统的输出信噪比表达式;然后,针对卫星链路服从莱斯分布,而无人机中继链路服从瑞利分布,推导出系统的中断概率表达式;最后,通过计算机仿真验证了理论分析的正确性,为卫星通信在未来6G中的应用提供有益的探索。

In recent years,UAV communication has shown a wide application prospect in the field of wireless communication.The interrupt performance of satellite communication system based on UAV relay is studied.Firstly,the output SNR ratio expression of the system after selection and combination is obtained when there is a direct path between the satellite and the ground station and the UAV relay adopts decoding and forwarding.Then,the outage probability expression of the system is derived for the satellite link obeying the Rice distribution and the UAV relay link obeying the Rayleigh distribution.Finally,the correctness of the theoretical analysis is verified by computer simulation,which provides a useful exploration for the application of satellite communication in the future 6G.