Security Analysis of Integrated HAP-Based FSO and UAV-Enabled RF Downlink Communications

IF 6.3 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Open Journal of the Communications Society Pub Date : 2024-08-26 DOI:10.1109/OJCOMS.2024.3450348
Mohammad Javad Saber;Mazen Hasna
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Abstract

High-altitude platform (HAP) stations are pivotal in non-terrestrial networks, enhancing communication capabilities and extending cost-effective network access to rural or remote areas. HAP-assisted free-space optical (FSO) communications provide a promising solution for improving data rates. To safeguard against eavesdropping, especially during emergencies, we propose a physical-layer security mechanism to enhance the control signaling resilience in disaster response and network failure detection. We investigate the secrecy performance of an integrated HAP-based FSO and unmanned aerial vehicle (UAV)-enabled radio frequency (RF) downlink system using the decode-and-forward relaying protocol. While optical links inherently provide better security, our focus is on the eavesdropping threats to the RF link. We derive novel and exact analytical and asymptotic closed-form expressions for the secrecy outage probability (SOP) and the probability of strictly positive secrecy capacity (PSPSC). Our results reveal the significant impact of atmospheric turbulence, RF fading, pointing errors, and optical detection technologies on the overall secrecy performance, providing valuable insights for designing secure mixed FSO and RF downlink communication systems.
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基于 HAP 的集成 FSO 和无人机射频下行链路通信的安全分析
高空平台(HAP)站在非地面网络中举足轻重,可增强通信能力,并将具有成本效益的网络接入扩展到农村或偏远地区。高空平台辅助自由空间光学(FSO)通信为提高数据传输速率提供了一种前景广阔的解决方案。为了防止窃听,特别是在紧急情况下,我们提出了一种物理层安全机制,以增强控制信令在灾难响应和网络故障检测中的弹性。我们利用解码转发中继协议研究了基于 HAP 的集成 FSO 和无人机(UAV)射频(RF)下行链路系统的保密性能。虽然光链路本质上具有更好的安全性,但我们的重点是射频链路的窃听威胁。我们推导出了保密中断概率(SOP)和严格正保密能力概率(PSPSC)的新颖、精确的分析和渐近闭式表达式。我们的结果揭示了大气湍流、射频衰减、指向误差和光学检测技术对整体保密性能的重大影响,为设计安全的 FSO 和射频混合下行链路通信系统提供了宝贵的见解。
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来源期刊
CiteScore
13.70
自引率
3.80%
发文量
94
审稿时长
10 weeks
期刊介绍: The IEEE Open Journal of the Communications Society (OJ-COMS) is an open access, all-electronic journal that publishes original high-quality manuscripts on advances in the state of the art of telecommunications systems and networks. The papers in IEEE OJ-COMS are included in Scopus. Submissions reporting new theoretical findings (including novel methods, concepts, and studies) and practical contributions (including experiments and development of prototypes) are welcome. Additionally, survey and tutorial articles are considered. The IEEE OJCOMS received its debut impact factor of 7.9 according to the Journal Citation Reports (JCR) 2023. The IEEE Open Journal of the Communications Society covers science, technology, applications and standards for information organization, collection and transfer using electronic, optical and wireless channels and networks. Some specific areas covered include: Systems and network architecture, control and management Protocols, software, and middleware Quality of service, reliability, and security Modulation, detection, coding, and signaling Switching and routing Mobile and portable communications Terminals and other end-user devices Networks for content distribution and distributed computing Communications-based distributed resources control.
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