Optimal Power Control for Cognitive LEO Constellation With Terrestrial Networks
Optimal Power Control for Cognitive LEO Constellation With Terrestrial Networks
复制标题
具有地面网络的认知 LEO 星座的最佳功率控制
DOI：
10.1109/lcomm.2019.2961880
复制
发表时间：
2020-03-01
期刊：
影响因子：
--
通讯作者：
Wang, Chuang
中科院分区：
文献类型：
--
作者：
Hu, Jing;Li, Guangxia;Wang, Chuang
功率控制在认知网络中起着重要的作用，它促进了异构系统之间的频谱共享。本文提出了一种具有地面网络的低轨认知卫星星座的数学模型，该模型考虑了低轨卫星的动态特性。从长期和短期的角度提出了两种最优功率控制方案，分别以最大化时延受限容量和最小化中断概率为目标。最优化问题的解决方案进行了分析，数值结果评估的计划的性能。
Power control plays a significant role in cognitive networks, which promotes the spectrum sharing between heterogeneous systems. This letter presents the mathematical model for cognitive low earth orbit (LEO) satellite constellation with terrestrial networks, which takes the dynamic characteristics of the LEO satellite into consideration. Two optimal power control schemes are proposed from the long-term and short-term perspectives, which aims to maximize the delay-limited capacity and minimize the outage probability, respectively. Solutions to the optimization problems are analyzed, and numerical results evaluate the performance of the schemes.