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.

中文翻译：

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具有地面网络的认知 LEO 星座的最优功率控制

功率控制在认知网络中起着重要作用，它促进了异构系统之间的频谱共享。这封信提出了具有地面网络的认知低地球轨道（LEO）卫星星座的数学模型，该模型考虑了低地球轨道卫星的动态特性。从长期和短期的角度提出了两种最优功率控制方案，分别旨在最大化延迟受限容量和最小化中断概率。分析了优化问题的解决方案，数值结果评估了方案的性能。