Secrecy Outage Analysis of Mixed RF-FSO Systems With Channel Imperfection
We analyze the secrecy outage performance of a mixed radio frequency-free space optical (RF-FSO) transmission system with imperfect channel state information (CSI). We deal with a single-input multiple-output wiretap model, where a base station (works as the relay) forwards the signal transmitted fr...
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2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8358703/ |
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| author | Hongjiang Lei Haolun Luo Ki-Hong Park Zhi Ren Gaofeng Pan Mohamed-Slim Alouini |
| author_facet | Hongjiang Lei Haolun Luo Ki-Hong Park Zhi Ren Gaofeng Pan Mohamed-Slim Alouini |
| author_sort | Hongjiang Lei |
| collection | DOAJ |
| description | We analyze the secrecy outage performance of a mixed radio frequency-free space optical (RF-FSO) transmission system with imperfect channel state information (CSI). We deal with a single-input multiple-output wiretap model, where a base station (works as the relay) forwards the signal transmitted from a user (source) to a data center (works as the destination), while an eavesdropper wiretaps the confidential information by decoding the received signal. Both the relay and the eavesdropper are armed with multiple antennas, and maximal ratio combining scheme is utilized to improve the received signal-to-noise ratio (SNR). The effects of imperfect CSI of the RF link and the FSO link, misalignment, detection schemes, and relaying schemes on the secrecy outage performance of mixed RF-FSO systems are studied. First, the cumulative distribution function and probability density function of FSO links with pointing error and two different detection technologies are derived. Then, we derive the closed-form expressions for the lower bound of the secrecy outage probability (SOP) with fixed-gain relaying and variable-gain relaying schemes. Furthermore, asymptotic results for the SOP are investigated by exploiting the unfolding of Meijer's <inline-formula> <tex-math notation="LaTeX">$G$</tex-math></inline-formula>-function when the electrical SNR of FSO link approaches infinity. Finally, Monte Carlo simulation results are presented to corroborate the correctness of the analysis. |
| format | Article |
| id | doaj-art-477f1ead838f42fabb5a9e8a87ce52b9 |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-477f1ead838f42fabb5a9e8a87ce52b92025-08-20T02:42:00ZengIEEEIEEE Photonics Journal1943-06552018-01-0110311310.1109/JPHOT.2018.28355628358703Secrecy Outage Analysis of Mixed RF-FSO Systems With Channel ImperfectionHongjiang Lei0https://orcid.org/0000-0002-9070-6300Haolun Luo1Ki-Hong Park2https://orcid.org/0000-0002-6867-4277Zhi Ren3Gaofeng Pan4https://orcid.org/0000-0003-1008-5717Mohamed-Slim Alouini5https://orcid.org/0000-0003-4827-1793Chongqing Key Lab of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing, ChinaChongqing Key Lab of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing, ChinaCEMSE Division, King Abdullah University of Science and Technology, Thuwal, Saudi ArabiaChongqing Key Lab of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing, ChinaChongqing Key Laboratory of Nonlinear Circuits and Intelligent Information Processing, Southwest University, Chongqing, ChinaChongqing Key Lab of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing, ChinaWe analyze the secrecy outage performance of a mixed radio frequency-free space optical (RF-FSO) transmission system with imperfect channel state information (CSI). We deal with a single-input multiple-output wiretap model, where a base station (works as the relay) forwards the signal transmitted from a user (source) to a data center (works as the destination), while an eavesdropper wiretaps the confidential information by decoding the received signal. Both the relay and the eavesdropper are armed with multiple antennas, and maximal ratio combining scheme is utilized to improve the received signal-to-noise ratio (SNR). The effects of imperfect CSI of the RF link and the FSO link, misalignment, detection schemes, and relaying schemes on the secrecy outage performance of mixed RF-FSO systems are studied. First, the cumulative distribution function and probability density function of FSO links with pointing error and two different detection technologies are derived. Then, we derive the closed-form expressions for the lower bound of the secrecy outage probability (SOP) with fixed-gain relaying and variable-gain relaying schemes. Furthermore, asymptotic results for the SOP are investigated by exploiting the unfolding of Meijer's <inline-formula> <tex-math notation="LaTeX">$G$</tex-math></inline-formula>-function when the electrical SNR of FSO link approaches infinity. Finally, Monte Carlo simulation results are presented to corroborate the correctness of the analysis.https://ieeexplore.ieee.org/document/8358703/Physical layer securityimperfect channel state information (CSI)mixed radio frequency-free space optical (RF-FSO) systemssecrecy outage probability (SOP). |
| spellingShingle | Hongjiang Lei Haolun Luo Ki-Hong Park Zhi Ren Gaofeng Pan Mohamed-Slim Alouini Secrecy Outage Analysis of Mixed RF-FSO Systems With Channel Imperfection IEEE Photonics Journal Physical layer security imperfect channel state information (CSI) mixed radio frequency-free space optical (RF-FSO) systems secrecy outage probability (SOP). |
| title | Secrecy Outage Analysis of Mixed RF-FSO Systems With Channel Imperfection |
| title_full | Secrecy Outage Analysis of Mixed RF-FSO Systems With Channel Imperfection |
| title_fullStr | Secrecy Outage Analysis of Mixed RF-FSO Systems With Channel Imperfection |
| title_full_unstemmed | Secrecy Outage Analysis of Mixed RF-FSO Systems With Channel Imperfection |
| title_short | Secrecy Outage Analysis of Mixed RF-FSO Systems With Channel Imperfection |
| title_sort | secrecy outage analysis of mixed rf fso systems with channel imperfection |
| topic | Physical layer security imperfect channel state information (CSI) mixed radio frequency-free space optical (RF-FSO) systems secrecy outage probability (SOP). |
| url | https://ieeexplore.ieee.org/document/8358703/ |
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