基于多样性计划的混合FSO/RF系统在卫星-空中-地面集成网络中,具有过时的CSI
Xin Li1, Yongjun Li2, Xinkang Song2
1Information and Navigation College, Air Force Engineering University, Xi'an, 710077, China. 18829443976@163.com.
Scientific reports
|July 20, 2025
概括
本研究介绍了卫星-空中-地面综合网络 (SAGIN) 的混合自由空间光学/无线电频率 (FSO/RF) 切换方案,以应对天气问题. 拟议的系统显著提高了性能,在具有挑战性的大气条件下降低了中断概率和位错误率.
科学领域:
- 无线通信网络 无线通信网络
- 光学无线通信的无线通信
- 卫星通信系统 卫星通信系统
背景情况:
- 卫星-空中-地面集成网络 (SAGIN) 面临由于天气诱导的损害和信号减弱而导致的性能下降.
- 现有的解决方案往往难以适应动态的天气条件和不完美的通道状态信息 (CSI).
研究的目的:
- 为SAGIN提出一种新的依赖天气的混合自由空间光学 (FSO) 和射频 (RF) 切换方案.
- 为了提高SAGIN在恶劣天气条件下以及过时的CSI的可靠性和性能.
主要方法:
- 在混合FSO/RF框架内设计了三个不同的工作模式和两个多样化方案.
- 使用关键指标进行性能评估:中断概率 (OP),平均位错率 (BER) 和ergodic容量 (EC).
- 对于高信号噪声比 (SNR) 和完美CSI场景的非对称结果的推导.
主要成果:
- 拟议的混合FSO/RF切换方案显示了显著的性能提升.
- 在中断概率 (OP) 中取得了超过8.8dB的改进.
- 在平均位错率 (BER) 中实现了超过8.1dB的改进.
结论:
- 开发的依赖天气的混合FSO/RF方案有效地减轻了SAGIN的天气引起的损害.
- 该方案提供了一个强大的解决方案,用于在具有挑战性的环境条件下提高通信可靠性和性能.
- 这些发现为设计弹性集成网络提供了有价值的工程见解.
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