Type
ArticleAuthors
Lei, HongjiangLuo, Haolun
Park, Kihong

Ansari, Imran Shafique
Lei, Weijia
pan, Gaofeng
Alouini, Mohamed-Slim

KAUST Department
Communication Theory LabComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Date
2020Online Publication Date
2020-04-02Print Publication Date
2020-07Permanent link to this record
http://hdl.handle.net/10754/662432
Metadata
Show full item recordAbstract
In this work, we analyze the secrecy outage performance of a dual-hop relay system composed of multipleinput- multiple-output radio-frequency (RF) links and a freespace optical (FSO) link while a multiple-antenna eavesdropper wiretaps the confidential information by decoding the received signals from the source node. The channel state information (CSI) of the RF and FSO links is considered to be outdated and imprecise, respectively. We propose four transmit antenna selection (TAS) schemes to enhance the secrecy performance of the considered systems. The secrecy outage performance with different TAS schemes is analyzed and the effects of misalignment and detection technology on the secrecy outage performance of mixed systems are studied. We derive the closed-form expressions for probability density function (PDF) and cumulative distribution function (CDF) over M´alaga channel with imperfect CSI. Then the closed-form expressions for the CDF and PDF of the equivalent signal-to-noise ratio (SNR) at the legitimate receiver over Nakagami-m and M´alaga channels are derived. Furthermore, the bound of the effective secrecy throughput (EST) with different TAS schemes are derived. Besides, the asymptotic results for EST are investigated by exploiting the unfolding of Meijer’s G-function when the electrical SNR of FSO link approaches infinity. Finally, Monte-Carlo simulation results are presented to testify the correctness of the proposed analysis. The results illustrate that outdated CSI shows a strong effect on the secrecy performance of the mixed RF-FSO systems. In addition, increasing the number of antennas at the source cannot significantly enhance the secrecy performance of the considered systemsCitation
Lei, H., Luo, H., Park, K.-H., Ansari, I. S., Lei, W., Pan, G., & Alouini, M.-S. (2020). On Secure Mixed RF-FSO Systems With TAS and Imperfect CSI. IEEE Transactions on Communications, 1–1. doi:10.1109/tcomm.2020.2985028arXiv
1809.01503Additional Links
https://ieeexplore.ieee.org/document/9054980/https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9054980
http://arxiv.org/pdf/1809.01503
ae974a485f413a2113503eed53cd6c53
10.1109/TCOMM.2020.2985028