论文标题
绩效分析和合作卫星 - 大赛 - 横物系统的优化
Performance Analysis and Optimization of Cooperative Satellite-Aerial-Terrestrial Systems
论文作者
论文摘要
随着与采用陆地继电器相比，航空继电器被认为是扩展和改善卫星 - 地球通信的一种替代和有希望的解决方案，因为视线传输的可能性增加。在本文中，考虑了一个合作的卫星 - 海底物行系统，包括卫星发射器，一组陆地接收器（D）和空中继电器（R）。具体而言，考虑到S和D的随机性以及采用随机几何形状，研究了R-D链接在非干预和干扰场景中的覆盖率概率，并通过得出近似的中断概率表达来研究S-R链接的中断性能。此外，制定并求解了S-R和R-D链路上的发射功率和传输时间的优化问题，以获得所考虑系统的最佳端到端能量效率。最后，提供了一些数值结果来验证我们提出的分析模型，以及研究所考虑的系统的最佳能效性能。
Aerial relays have been regarded as an alternative and promising solution to extend and improve satellite-terrestrial communications, as the probability of line-of-sight transmissions increases compared with adopting terrestrial relays. In this paper, a cooperative satellite-aerial-terrestrial system including a satellite transmitter (S), a group of terrestrial receivers (D), and an aerial relay (R) is considered. Specifically, considering the randomness of S and D and employing stochastic geometry, the coverage probability of R-D links in non-interference and interference scenarios is studied, and the outage performance of S-R link is investigated by deriving an approximated expression for the outage probability. Moreover, an optimization problem in terms of the transmit power and the transmission time over S-R and R-D links is formulated and solved to obtain the optimal end-to-end energy efficiency for the considered system. Finally, some numerical results are provided to validate our proposed analysis models, as well as to study the optimal energy efficiency performance of the considered system.
