Effect of RF Interference on the Security-Reliability Tradeoff Analysis of Multiuser Mixed RF/FSO Relay Networks With Power Allocation

El‐Malek, Ahmed H. Abd; Salhab, Anas M.; Zummo, Salam A.; Alouini, Mohamed‐Slim

doi:10.1109/jlt.2017.2687863

Cited by 74 publications

(42 citation statements)

References 34 publications

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“…analyzed the security reliability trade-off (SRT) of a multiuser mixed RF-FSO system in [28] and derived the closed-form expressions for OP, ASER, EC, and intercept probability. The effect on SRT of multiuser mixed RF-FSO systems from RF cochannel interference was analyzed in [29] and a power allocation scheme was proposed to enhance the secrecy performance of the considered system. In previous work [30], we analyzed the secrecy performance of the mixed RF-FSO uplink system wherein the closed-form expressions for secrecy outage probability (SOP) and ergodic secrecy capacity were derived under different relaying schemes and detection techniques.…”

Section: A Background and Related Literaturementioning

confidence: 99%

“…In Section II, we present the mixed RF- A source node (S) transmits the confidential information to a destination (D) with the help of an intermediate relay (R), while a multiple-antenna eavesdropper (E) wiretaps the confidential information by decoding the received signals. It is noteworthy that E can not receive any signals from R since the FSO link is secure due to the high directionality of laser beam [28], [29], [30], [33]. It is assumed that S, R, and E are equipped with N i (i ∈ {S, R, E}) multiple antennas, respectively.…”

Section: Structurementioning

confidence: 99%

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On Secure Mixed RF-FSO Systems With TAS and Imperfect CSI

Lei

Luo

Park

et al. 2020

IEEE Trans. Commun.

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In this work, we analyze the secrecy outage performance of a dual-hop relay system composed of multiple-input-multiple-output radio-frequency (RF) links and a free-space optical (FSO) link while a multiple-antenna eavesdropper wiretaps the confidential information by decoding the received signals from the resource node. The channel state information (CSI) of the RF and FSO links is considered to be outdated. We propose three 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 Málaga 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 Málaga channels are derived. Furthermore, the lower bound of the secrecy outage probability (SOP) with different TAS schemes are derived. Besides, the asymptotic results for SOP 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 the outdated CSI shows a strong effect on the secrecy outage performance. In addition, increasing the number of antennas at the source cannot significantly enhance the secrecy performance of the considered systems.Manuscript received.Mixed RF-FSO systems, outdated channel state information, physical layer security, secrecy outage probability, transmit antenna selection.

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Section: A Background and Related Literaturementioning

confidence: 99%

Section: Structurementioning

confidence: 99%

On Secure Mixed RF-FSO Systems With TAS and Imperfect CSI

Lei

Luo

Park

et al. 2020

IEEE Trans. Commun.

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“…El-Malek et al [12] studied the security reliability trade-off of a single-input multiple-output mixed RF-FSO system and derived the closed-form expressions for some generalized performance metrics, such as outage probability (OP), intercept probability (IP), etc. The same authors also analyzed the effect of RF co-channel interference on the secrecy performance of mixed RF-FSO systems and proposed a new power allocation scheme to enhance the secrecy performance [13]. Notice that the all the performance metrics studied in [12] and [13] were considered the main channel or wiretap channel separately.…”

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confidence: 99%

Secrecy Outage Analysis of Mixed RF-FSO Downlink SWIPT Systems

Lei

Dai

Park

et al. 2018

IEEE Trans. Commun.

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106

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We analyze a secure dual-hop mixed radio frequency-free space optical (RF-FSO) downlink simultaneous wireless information and power transfer (SWIPT) systems. The FSO link and all RF links experience Gamma-Gamma, independent and identical Nakagami-m fading, respectively. We analyze the effects of atmospheric turbulence, pointing error, detection technology, path loss, and energy harvesting on secrecy performance. Signal-to-noise ratios at both legitimate and illegitimate receivers are not independent since they are both simultaneously influenced by the FSO link. We derive the closedform expression of the secrecy outage probability (SOP) as well as the asymptotic result for SOP when signal-to-noise ratios at relay and legitimate destinations tend to infinity. Monte-Carlo simulations are performed to verify the accuracy of our analysis. The results show that the secrecy diversity order (SDO) depends on the fading parameter of the relay-destination link and the number of the destination's antennas. Additionally, the SDO also depends on the fading parameters, the pointing error parameter, and the detection type of the FSO link. Index Terms-Physical layer security, mixed RF-FSO systems, Gamma-Gamma fading, Nakagami-m fading, simultaneous wireless information and power transfer, secrecy outage probability. I. INTRODUCTION A. Background and Related Works Dual-hop mixed radio frequency-free space optical (RF-FSO) systems are designed to overcome atmospheric turbulence and other factors limiting the applications of FSO systems. They can also effectively improve communication coverage, save spectrum resources, avoid relocating devices, and are considered as a powerful candidate for next generation Manuscript received.

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“…For the uplink scenario, Abd El-Malek et al [20] analyzed the security-reliabiliy trad-off and derived some closed-form expressions, like the outage probability and average symbol error probability. The same authors studied the impact of the RF co-channel interference on the secrecy performance and optimized the transmit RF power [21], [28]. With considering the main and wiretap channels jointly, authors, in [22], studied the secrecy performance and derived expressions for the secrecy outage probability.…”

Section: Pls In Fso Systemsmentioning

confidence: 99%

Survey on Physical Layer Security in Optical Wireless Communication Systems

Obeed

Salhab

Alouini

et al. 2018

2018 Seventh International Conference on Communications and Networking (ComNet)

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As the existing radio-frequency (RF) networks cannot meet the ever-increasing data rate demand, the optical wireless communication (OWC), which uses a wide untapped unregulated spectrum, has been proposed as a promising technology to overcome the RF spectrum limitations. On the other hand, with the increasing demand for high data rate and the prevalence of the broadcast-nature networks, researchers have recently come up with new mechanisms to improve secure communication using physical layer techniques. Compared to RF networks, the OWC networks are more secure and less susceptible to the interception because of the small coverage provided by LEDs, and because they work properly only in the presence of the line-of-sight (LoS) components. However, the security in OWC networks is still an issue, especially in visible light communication (VLC) when the transmitted information can be accessed by multiple users as in public areas, meeting rooms, laboratories, and libraries. That means potential eavesdroppers may be existing to gather confidential messages. This paper reviews all the conducted work on physical layer security (PLS) in two types of OWC networks, which are the VLC and free space optical (FSO) networks. Furthermore, the paper proposes several open problems in these networks to optimize and enhance the security performance.

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Effect of RF Interference on the Security-Reliability Tradeoff Analysis of Multiuser Mixed RF/FSO Relay Networks With Power Allocation

Cited by 74 publications

References 34 publications

On Secure Mixed RF-FSO Systems With TAS and Imperfect CSI

On Secure Mixed RF-FSO Systems With TAS and Imperfect CSI

Secrecy Outage Analysis of Mixed RF-FSO Downlink SWIPT Systems

Survey on Physical Layer Security in Optical Wireless Communication Systems

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