On the Secrecy Performance of Random VLC Networks With Imperfect CSI and Protected Zone

Wang, Jin‐Yuan; Qiu, Yu; Lin, Sheng-Hong; Wang, Junbo; Lin, Min; Liu, Cheng

doi:10.1109/jsyst.2019.2947614

Cited by 19 publications

(12 citation statements)

References 24 publications

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“…Based on the Laplace distribution for θ, it is shown that the channel gain follows a truncated Laplace distribution as follows [18]: (11) where h min ≤ h ≤ h max . The mean and scale parameter of the channel gain are given as:…”

Section: Random Orientationmentioning

confidence: 99%

“…2. Note that in (11), F θ (θ 0 ) = θ0 0 f(θ)dθ, where θ ≤ θ 0 results in ψ ≤ Ψ c , and therefore, the channel gain becomes zero. The angle θ 0 is given as [21]:…”

Section: Random Orientationmentioning

confidence: 99%

“…Towards this direction, the secrecy outage probability of the VLC downlink is characterised in [10] considering the randomness of the locations of the legitimate user and eavesdroppers. Moreover, the impact of imperfect CSI on the secrecy capacity is evaluated in [11], where the legitimate users are assumed to be uniformly distributed in a protected zone around the AP.…”

Section: Introductionmentioning

confidence: 99%

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Realistic Secrecy Performance Analysis for LiFi Systems

et al. 2021

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This paper studies the secrecy performance of light-fidelity (LiFi) networks under the consideration of random device orientation and partial knowledge of the eavesdroppers' channel state information. Particularly, the secrecy capacity and secrecy outage probability are analysed for the case of a single eavesdropper, as well as for the case of multiple eavesdroppers. Moreover, a machine learning based access point (AP) selection algorithm is presented with the objective of maximising the secrecy capacity of legitimate users. Our results show that optimising the AP selection while taking into account the random behaviour of the optical channel results in a significant enhancement in the achievable secrecy performance. In fact, using the derived realistic secrecy expressions as the basis for AP selection results in up to 30% secrecy capacity enhancement compared to the limited assumption of fixed orientation.INDEX TERMS Light-fidelity (LiFi), physical layer security (PLS), random orientation, and secrecy capacity.

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Section: Random Orientationmentioning

confidence: 99%

“…2. Note that in (11), F θ (θ 0 ) = θ0 0 f(θ)dθ, where θ ≤ θ 0 results in ψ ≤ Ψ c , and therefore, the channel gain becomes zero. The angle θ 0 is given as [21]:…”

Section: Random Orientationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Realistic Secrecy Performance Analysis for LiFi Systems

et al. 2021

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“…limited hardware and restricted computing power [6] . Hence, physical layer security (PLS) techniques might found a new horizon on 6G to provide security by efficiently exploiting the randomness of wireless channels.In this regard, there exists special interest in investigating PLS techniques on VLC networks under secrecy constraints [7], [8]. Particularly, in [7], upper and lower bounds for the secrecy capacity of an indoor VLC network in the presence of an eavesdropper were derived.…”

Section: Introductionmentioning

confidence: 99%

On the Secrecy Performance of a Hybrid RF/VLC System

Silva¹,

Osorio²,

Olivo³

et al. 2021

Anais Do XXXIX Simpósio Brasileiro De Telecomunicações E Processamento De Sinais

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This paper evaluates the secrecy outage probability of a hybrid radio frequency (RF) and visible light communication (VLC) network in the presence of an eavesdropper. We assume that data is transmitted over the RF and VLC links following a proposed multiplexing scheme in which the data sent by the source is split with a certain allocation ratio. Furthermore, the legitimate and eavesdropper users are assumed to have multihoming capabilities, so that they are able to receive data from both RF and VLC access points, simultaneously. We derive integral-form exact expression, as well as a closedform asymptotic expression for the secrecy outage probability and validate them via Monte Carlo simulations. Our results show that multiplexing the information signal by both links leads to an enhancement of the secrecy performance since it opportunistically takes advantages of the best characteristics of both domains.

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“…[8] ignores the constraints of visible-light signals in indoor environments. In [9], the secrecy performance for a random VLC system with a transmitter, a legitimate user and an eavesdropper was investigated and the effects of the imperfect channel state information and the protected zone on security performance were discussed. Note that only lightwave information transmission is considered in [2]- [9], the possibility of harvesting energy in the VLC system is not discussed.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis and Improvement for Secure VLC With SLIPT and Random Terminals

et al. 2020

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This paper investigates the physical-layer data secure transmission for indoor visible light communications (VLC) with simultaneous lightwave information and power transfer (SLIPT) and random terminals. A typical indoor VLC system including one transmitter, one desired information receiver and one energy receiver is considered. The two receivers are randomly deployed on the floor, and the random channel characteristics is analyzed. Based on the possibility that the energy receiver is a passive information eavesdropper, the secrecy outage probability (SOP) and the average secrecy capacity (ASC) are employed to evaluate the system performance. A closed-form expression for the lower bound of the SOP and an exact closed-form expression for the ASC are derived, respectively. To further improve the physical-layer security, a protected zone based scheme is proposed, and then the SOP and the ASC are re-derived. By using Monte-Carlo simulations, the accuracy of the derived lower bound of SOP and the exact ASC are verified. Moreover, numerical results show that the security of the VLC system significantly improves by employing the protected zone. INDEX TERMS Visible light communications, physical-layer security, secrecy outage probability, average secrecy capacity, SLIPT, random terminals, protected zone.

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On the Secrecy Performance of Random VLC Networks With Imperfect CSI and Protected Zone

Cited by 19 publications

References 24 publications

Realistic Secrecy Performance Analysis for LiFi Systems

Realistic Secrecy Performance Analysis for LiFi Systems

On the Secrecy Performance of a Hybrid RF/VLC System

Performance Analysis and Improvement for Secure VLC With SLIPT and Random Terminals

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