对RIS辅助的RoFSO通信系统在马拉加地区的性能分析,用于智能城市应用
Applied optics
|September 14, 2023
概括
可重新配置的智能表面 (RIS) 克服了5G智慧城市的无线电自由空间光学 (RoFSO) 中的信号阻断. 这项技术通过创建新的视线连接来提高通信可靠性和覆盖范围.
科学领域:
- 光学通信是指光学通信.
- 无线网络无线网络.
- 智慧城市技术 智慧城市技术
背景情况:
- 无线电在自由空间光学 (RoFSO) 是5G智慧城市服务的关键技术.
- RoFSO的一个显著的局限性是由于其视线 (LOS) 要求而导致信号阻塞的发生,从而造成覆盖差距.
- 现有的解决方案在动态的城市环境中难以保持一致的连接.
研究的目的:
- 提出和分析一个可重新配置的智能表面 (RIS) 辅助的RoFSO系统.
- 为了克服传统RoFSO系统固有的连接困难和信号阻塞问题.
- 为了提高5G应用的通信通道覆盖,智能和可控性.
主要方法:
- 使用异构检测的性能分析.
- 使用马拉加分布对大气动荡的建模.
- 对端到端的信号噪声比 (SNR) 概率密度函数 (PDF) 和累积分布函数 (CDF) 的精确封闭式表达式的导出.
- 对各种调制方案 (MQAM,NBFSK,CBFSK) 的系统性能指标的调查,包括中断概率,ergodic通道容量和比特错误率 (BER).
主要成果:
- 通过产生新的LOS连接,RIS辅助的RoFSO系统有效地克服了信号阻断.
- 由此产生的统计模型在各种流条件,链路长度和散射误差下准确地表示系统性能.
- 数字结果显示,与传统的RoFSO相比,性能指标显著改善.
结论:
- 拟议的RIS辅助RoFSO技术为5G智慧城市应用增强连接提供了可行的解决方案.
- RIS模块提供智能和可控制的扩展通信通道覆盖范围,减轻LOS限制.
- 该系统显示出在城市环境中可靠和强大的无线通信的巨大潜力.
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