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可重构智能表面辅助的混合RF-FSO传输系统性能分析
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作者单位:

1.湖南大学信息科学与工程学院;2.湖南金龙智造科技股份有限公司

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基金项目:

国家自然科学基金资助项目,湖南省重点研发计划项目,湖南省高新技术产业科技创新引领计划项目


Performance Analysis of RIS-assisted Hybrid RF-FSO Transmission Systems
Author:
Affiliation:

1.College of Computer Science and Electronic Engineering,Hunan University;2.Hunan Castking Intelligent Manufacturing Technology Co., Ltd

Fund Project:

National Natural Science Foundation of China,The Key R&D Projects of Hunan Province,The High-tech Industry Science and Technology Innovation Leading Project Program of Hunan Province

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    摘要:

    自由空间光(FSO)通信具有高速率、低成本和很强的抗干扰能力,但是大气湍流引起的衰落会造成FSO通信系统的性能恶化。传统的解决方案是使用RF链路作为并行的通信链路来提升系统性能。另一方面,可重构智能表面(RIS)由于具有低损耗、部署简易且无需复杂的编码和解码等优点,能够进一步提高RF链路的接收信噪比。本文提出一种RIS辅助的混合RF-FSO传输系统,以此来改善通信服务质量。基于此混合模型,导出系统中断概率、平均误码率和信道容量的表达式,同时给出蒙特卡罗仿真来验证分析结果的准确性。结果表明所提出系统的性能相比于传统的混合RF-FSO系统有显著的提升。

    Abstract:

    Free space optical (FSO) communications offer high speed, low cost, and strong anti-interference ability. However, the atmospheric turbulence-induced fading causes deterioration in the performance of FSO communication systems. The conventional solution is to use RF links as parallel communication links to improve the system performance. On the other hand, reconfigurable intelligent surfaces (RIS) can be employed to further improve the received signal-to-noise ratio of the RF link due to its advantages of low loss, easy deployment, and no complex coding and decoding. In this paper, an RIS-assisted hybrid RF-FSO transmission system is proposed to improve the communication quality of service. Based on this hybrid model, exact expressions for the outage probability, average BER, and channel capacity are derived, and Monte-Carlo simulations are presented to verify the accuracy of the analytical results. Results show that the performance of the proposed system is significantly improved compared to the conventional hybrid RF-FSO system.

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历史
  • 收稿日期: 2021-08-14
  • 最后修改日期: 2021-11-15
  • 录用日期: 2021-11-29
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