Performance analysis of physical-layer security in mid-infrared FSO communication system

被引：1
作者：
Zhong, Ruijing [1 ]
Ji, Jianhua [1 ]
Zeng, Tianliang [1 ]
Wang, Ke [1 ]
Song, Yufeng [1 ]
机构：
[1] Shenzhen Univ, Coll Elect & Informat Engn, Shenzhen 518060, Peoples R China
来源：
OPTICAL AND QUANTUM ELECTRONICS | 2024年 / 56卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Free-space optical communication; Physical-layer security; Secrecy capacity; Interception probability; CASCADE; TRANSMISSION; MODEL;
D O I：
10.1007/s11082-023-06089-6
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Based on the eavesdropping model of non-line-of-sight (NLOS) scattering channel in mid-infrared (MIR) free-space optical (FSO) communication system, the physical-layer security is analyzed theoretically by considering the effects of the atmospheric turbulence, atmospheric attenuation, and beam divergence attenuation. The effects of atmospheric turbulence, transmission distance, and visibility on secrecy capacity and interception probability are investigated. Secrecy capacity and interception probability of near-infrared (NIR) system are compared with those of MIR system. It is theoretically demonstrated that the secrecy capacity of the NIR system is smaller than that of the MIR system. Closed-form expression of interception probability is derived. Furthermore, in the same visibility condition, the interception probability of the MIR system is much lower than that of the NIR system. Therefore, compared with the NIR system, MIR system has much better performance of physical-layer security.
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页数：14
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