On the Performance of RF-FSO System Over Rayleigh and Kappa-Mu/Inverse Gaussian Fading Environment

Gupta, J. P.; Dwivedi, Vivek K.; Karwal, Vikram

doi:10.1109/access.2018.2789478

Cited by 31 publications

(18 citation statements)

References 36 publications

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“…The PDF of SNR of the RF-FSO link is obtained by differentiating (11) with respect to γ dn as [28,Eq. (4)]…”

Section: F Pdf and Cdf Of Snr For Dual-hop Rf-fso Linkmentioning

confidence: 99%

“…The expressions of EC and OP were obtained in [25]- [27] considering a Nakagami-m-Málaga turbulent fading channel where in [27], the authors made an extension with CCI to imply that the performance of the RF-FSO system depends on the number and power of CCI. Diversity and coding gain of a κ − µ/Inverse Gaussian fading (IG) system was analyzed in [28] where the authors deduced the EC and BER expressions for different binary modulations. In [29], a RF-FSO scenario was modeled with multiple sources containing decode-and-forward (DF) relaying scheme.…”

Section: Introduction a Background And Related Workmentioning

confidence: 99%

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Secrecy Performance Analysis of Mixed Hyper-Gamma and Gamma-Gamma Cooperative Relaying System

et al. 2020

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In this paper, we investigate a secure dual-hop radio frequency-free space optical (RF-FSO) mixed variable gain relaying framework in the presence of a single eavesdropper. The RF and FSO links are modeled with hyper Gamma (HG) and Gamma-Gamma (ΓΓ) fading channels, respectively. We assume that the eavesdropper utilizes another HG fading channel to wiretap the transmitted confidential data from the RF link. Our key concern is to defend this information against passive eavesdropping. We carry out the secrecy measurements by deriving closed-form mathematical expressions of average secrecy capacity (ASC), secure outage probability (SOP), and strictly positive secrecy capacity (SPSC), all in terms of Meijer's G function. Capitalizing on the derived expressions, we analyze the impacts of atmospheric turbulence and pointing errors on the secrecy capacity and outage performance of the proposed scenario. For gaining more insights, we also analyze the asymptotic outage behaviour for high signal-to-noise ratio. Two detection techniques i.e. heterodyne (HD) and the intensity modulation with direct detection (IM/DD) are taken into consideration and our results demonstrate that HD technique notably outperforms the IM/DD scheme. The supremacy and novelty of the model is demonstrated via utilizing generic properties of the HG fading channel. Finally, we provide a justification of the derived expressions via Monte-Carlo simulations. INDEX TERMS Gamma-Gamma fading, eavesdropper, Hyper-Gamma fading, physical layer security, pointing error, variable gain relay.

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“…The PDF of SNR of the RF-FSO link is obtained by differentiating (11) with respect to γ dn as [28,Eq. (4)]…”

Section: F Pdf and Cdf Of Snr For Dual-hop Rf-fso Linkmentioning

confidence: 99%

Section: Introduction a Background And Related Workmentioning

confidence: 99%

Secrecy Performance Analysis of Mixed Hyper-Gamma and Gamma-Gamma Cooperative Relaying System

et al. 2020

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“…The expressions for OP and average BER for various modulation techniques, such as phase-shift keying (PSK), differential PSK (DPSK), and noncoherent frequency-shift keying (NCFSK), were derived in [11], where the authors used exponentiated-Weibull distribution to model the FSO link. The authors in [12] derived the closed form expressions for EC, OP, and BER over Rayleighkappa-mu/inverse Gaussian fading scenarios utilizing the expansion of moment generating function (MGF). The authors in [13] and [14] used identical channel models but different relaying techniques.…”

Section: Introduction a Backgroundmentioning

confidence: 99%

On Secrecy Performance of Mixed Generalized Gamma and Málaga RF-FSO Variable Gain Relaying Channel

et al. 2020

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The emergence of an array of new wireless networks has led researchers to evaluate the prospect of utilizing the physical properties of the wireless medium in order to design secure systems. In this paper, the physical layer secrecy performance of a mixed radio frequency-free space optical (RF-FSO) system with variable gain relaying scheme is investigated in the presence of an eavesdropper. We assume that the eavesdropper can wiretap the transmitted confidential data from the RF link only. It is further assumed that the main and eavesdropper RF links are modeled as generalized Gamma (GG) fading channel, and the free space optical (FSO) link experiences Málaga turbulence with pointing error impairment. Our primary concern is to protect this confidential information from being wiretapped. Besides pointing error, the atmospheric turbulence and two types of detection techniques (i.e. heterodyne detection and intensity modulation with direct detection) are also taken into consideration. Utilizing amplify-and-forward (AF) scheme, the novel mathematical closed-form expressions for average secrecy capacity, lower bound of secrecy outage probability, and strictly positive secrecy capacity are derived. As both the links (RF and FSO) undergo generalized fading channels, the derived expressions are also general. We present a unification of some existing works utilizing the proposed model to better clarify the novelty of this work. Finally, all the derived expressions are justified via Monte-Carlo simulations. INDEX TERMS Physical layer security, Generalized Gamma fading, Málaga fading, variable gain relay, average secrecy capacity, strictly positive secrecy capacity, and secrecy outage probability.

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“…In the context of DF relaying, the authors in [23] derived exact closed-form expressions for the outage probability, BER, and channel capacity of a mixed RF-FSO relay network assuming η-µ and Gamma-Gamma fading models. Moreover, the authors in [24] considered the composite κ-µ/Inverse Gaussian fading model to represent the FSO link in a DF mixed RF-FSO relay network. Both the outage probability and error rate performances were studied long with the channel capacity.…”

Section: Introductionmentioning

confidence: 99%

Multi-User Mixed FSO-RF Systems With Aperture Selection Under Poisson Field Interference

Trigui¹,

Affes²,

Salhab

et al. 2019

IEEE Access

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In this paper, we study the performance of mixed free space optical (FSO)-radio frequency (RF) multiuser relay network with aperture selection and opportunistic user scheduling in the presence of Poisson field interference. The considered system includes multiple optical sources (apertures), one amplify-andforward (AF) relay, and multiple users. The source is connected with the relay node through FSO links and the relay is connected with the users through RF links with a Poisson field interference at the users. The FSO-RF channels are assumed to follow Málaga-M/shadowed κ-µ fading models with pointing errors on the FSO links. Exact closed-form expressions are derived for the outage probability and average symbol error probability (SEP). Moreover, the system performance is studied at the high signal-to-noise ratio (SNR) regime, where an approximate expression for the system outage probability is derived, in addition to deriving the system diversity order and coding gain. Then, the optimum source and relay transmission powers and relay position are determined to minimize the system asymptotic outage probability. The Monte-Carlo simulations are provided to validate the achieved exact and asymptotic results.

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On the Performance of RF-FSO System Over Rayleigh and Kappa-Mu/Inverse Gaussian Fading Environment

Cited by 31 publications

References 36 publications

Secrecy Performance Analysis of Mixed Hyper-Gamma and Gamma-Gamma Cooperative Relaying System

Secrecy Performance Analysis of Mixed Hyper-Gamma and Gamma-Gamma Cooperative Relaying System

On Secrecy Performance of Mixed Generalized Gamma and Málaga RF-FSO Variable Gain Relaying Channel

Multi-User Mixed FSO-RF Systems With Aperture Selection Under Poisson Field Interference

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