Tradeoff Between Secrecy Capacity and Harvested Energy for Secure Visible Light Communications With SWIPT

Wang, Jin‐Yuan; Lin, Sheng-Hong; Qiu, Yu; Huang, Nuo; Wang, Junbo

doi:10.1109/access.2019.2902570

Cited by 14 publications

(7 citation statements)

References 32 publications

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“…The received optical signals at D and E are converted to electrical signal through PD. Then, we apply the maximal ratio combining (MRC) scheme at the legitimate user and eavesdropper to merge the signals from S and R [22]. Therefore, the final SNRs of the legitimate user and eavesdropper are given by,

γ_{D} = m i n (γ_{S R}, γ_{R D}) + γ_{S D},

γ_{E} = m i n (γ_{S R}, γ_{R E}) + γ_{S E .}

…”

Section: System and Channel Modelsmentioning

confidence: 99%

“…To the best of our knowledge, we found that a few researchers studied the PLS for the mixed VLC/RF communication systems. The tradeoff between the secrecy capacity (SC) and the harvested energy (HE) is investigated in VLC system, which receiver is employed to coordinate the information decoding and the EH using simultaneous wireless information and power transfer in [22]. A cooperative hybrid VLC/RF system with spatially random terminals is considered in [23].…”

Section: Introductionmentioning

confidence: 99%

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Secrecy performance analysis for the mixed RF/VLC cooperative relaying systems

et al. 2021

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In this work, the authors consider the security performance for the mixed radio frequency link and visible-light link cooperative relaying system, where the relay has the energy collection ability and can extract the direct current part existing in the visible-light signal. Then, the relay uses the collected energy to demodulate the received visible-light signal and retransmit it through the radio frequency link. With this equipment, some analytical expressions of the average secrecy capacity and the secrecy outage probability are derived. Furthermore, the asymptotic expression is also derived to examine the influence of the various configuration parameters on the secrecy performance of the mixed relaying system. At last, some numerical and simulation results are given to verify the theoretical analysis. INTRODUCTIONVisible light communication (VLC) has recently received considerable attention as a promising technique in the 5G/6G wireless communication [1]. With the increasing demand for the wireless communication networks and limited spectrum resources, light emitting diodes (LEDs) are used as sources, and an optical signal operated in a visible light band with a large bandwidth is used as a carrier of information source to realize the information transmission. VLC has both lighting and communication functions, and achieves an effective, green, and promising technology to realize the last mile of wireless communication. VLC has been widely used in shortdistance, small-scale, and indoor wireless communication. Due to the above mentioned characteristics of VLC, the scope of VLC application is limited [2,3]. Fortunately, the wireless relay can solve these problems well. Meanwhile, the VLCbased relaying system can obtain larger link capacity and better coverage.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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γ_{D} = m i n (γ_{S R}, γ_{R D}) + γ_{S D},

γ_{E} = m i n (γ_{S R}, γ_{R E}) + γ_{S E .}

…”

Section: System and Channel Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Secrecy performance analysis for the mixed RF/VLC cooperative relaying systems

et al. 2021

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“…Specifically, the power splitter at Eve divides ρ (0 < ρ ≤ 1) portion of the signal power for ID, and the remaining (1 − ρ) portion of power for EH [18]. Therefore, the received signals at Bob and Eve are given, respectively, by [19]…”

Section: System Modelmentioning

confidence: 99%

“…where C th = 0.5 ln (γ th ) denotes the threshold of the target SC, and γ th ≥ 1 denotes the equivalent threshold of the SNR. It should be noted that it is very challenging to obtain a closed-form expression of (19). Alternatively a tight lower bound of SOP is given in the following.…”

Section: A Statistical Characteristic Analysismentioning

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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“…More recently, VLC has been proven to be capable of EH in both free-space [4] and underwater [5],empowering a new perspective on simultaneous lightwave information and power transfer (SLIPT) [6]. For instance, Wang, et al in [7] investigated the indoor SLIPT system taken into account the tradeoff between the secrecy capacity and the harvested energy. Tang, et al in [8] investigated joint subchannel assignment and power allocation to solve the mixed-integer frac-tional nonlinear programming problem in the energy efficiency optimization of SLIPT.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Simultaneous Lightwave Information and Power Transfer Under Practical Indoor Mobility With Reinforcement Learning

Wu,

Chen,

Song

2023

IEEE Photonics J.

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This paper investigates reinforcement learning (RL)based solutions for optimizing resource allocations in simultaneous lightwave information and power transfer (SLIPT) under practical indoor mobility. Encountering the challenges of excessive outages and intermittent channels posed by practical mobility, the reinforcer for agent training is endowed with the tradeoff between energy efficiency and communication quality. Accordingly, two typical RL categories, i.e., value-based tabular RL and policy gradient-based deep RL are imposed and compared through several numerical examinations regarding information-power transfer balance, generalization ability, and complexity. The vanilla tabular RL is demonstrated to outperform the gradient-based deep RL and should be prioritized in practice if feasible.

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Tradeoff Between Secrecy Capacity and Harvested Energy for Secure Visible Light Communications With SWIPT

Cited by 14 publications

References 32 publications

Secrecy performance analysis for the mixed RF/VLC cooperative relaying systems

Secrecy performance analysis for the mixed RF/VLC cooperative relaying systems

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

Optimizing Simultaneous Lightwave Information and Power Transfer Under Practical Indoor Mobility With Reinforcement Learning

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