On the Physical Layer Security of a Decode and Forward Based Mixed FSO/RF Co-Operative System

被引：24

作者：

Pattanayak, Dipti R. ^{[1
]}

Dwivedi, Vivek K. ^{[1
]}

Karwal, Vikram ^{[1
]}

Ansari, Imran Shafique ^{[2
]}

Lei, Hongjiang ^{[3
]}

Alouini, Mohamed-Slim ^{[4
]}

机构：

[1] Jaypee Inst Informat Technol, Dept Elect & Commun Engn, Noida 201309, India

[2] Univ Glasgow, James Watt Sch Engn, Glasgow G12 8QQ, Lanark, Scotland

[3] Chongqing Univ Post & Telecommun, Chongqing Key Lab Mobile Commun Technol, Chongqing 400065, Peoples R China

[4] King Abdullah Univ Sci & Technol, CEMSE Div, Thuwal 239556900, Saudi Arabia

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2020年 / 9卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Mixed FSO/RF; Malaga; Nakagami-m; physical layer security; secrecy outage probability; secrecy throughput;

D O I：

10.1109/LWC.2020.2979442

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this letter, the secrecy performance of a decode-and-forward (DF) principle based mixed free space optics (FSO) and radio frequency (RF) system is analyzed. The analysis is done from physical layer (PHY) security perspective. Herein, two different eavesdroppers are considered while signal is transmitting from source (S) to destination (D) through a relay (R) point. The FSO based and RF based eavesdroppers are trying to intercept the confidential signal from S-R link and R-D links respectively. The faded FSO links are modeled by Malaga (M) distribution and RF links are characterized by Nakagami-m distribution. Exact closed form expression for secrecy performance metric such as secrecy outage probability is derived and analyzed for the aforementioned system in terms of Meijer's G-function and bivariate Fox's H-function. Furthermore, the asymptotic expressions for these performance metrics are derived by employing high signal to noise ratio (SNR) approximation. Afterwards the results are verified by Monte-Carlo simulations. Finally, the secrecy threshold for the system is derived to get insight of the system reliability and secrecy.

引用

页码：1031 / 1035

页数：5