Visible light communication (VLC) is considered to be a great replacement or complement to existing radio frequency networks to provide the future fifth‐generation (5G) wireless technology with higher data rates for indoor connectivity, which alleviates the traffic demand. Therefore, many issues emerged regarding the security in 5G networks as human safety is at risk. This work presents a comprehensive study on the physical‐layer security (PLS) and solutions in 5G networks, specifically, the security of VLC technology as one of the core PLS solutions for 5G future wireless networks. Furthermore, VLC threats and PLS solutions are extensively investigated. Based on our study, we propose a new indoor VLC secure model to enhance the secrecy performance in VLC networks using a combination of multiple PLS techniques to achieve this aim as beamforming, secure communication zones, and friendly jamming. The simulation results with respect to the received optical power and signal‐to‐noise ratio (SNR) prove that the proposed indoor VLC model can improve the secrecy performance. As the user's SNR exceeded 100 dB and optical received power reached 15 mW, the malicious user's SNR barely reached 30 dB with a 4‐μW received power outside the target zone increasing his interference level. Finally, future research directions in VLC security are outlined to encourage future research.

中文翻译：

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适用于5G网络的增强型室内可见光通信物理层安全方案：调查，安全挑战和信道分析保密性能

可见光通信（VLC）被认为是对现有射频网络的巨大替代或补充，以为未来的第五代（5G）无线技术提供更高的室内连接数据速率，从而减轻交通需求。因此，由于人身安全受到威胁，因此出现了许多有关5G网络安全性的问题。这项工作对5G网络中的物理层安全性（PLS）和解决方案进行了全面研究，特别是VLC技术的安全性是5G未来无线网络的核心PLS解决方案之一。此外，对VLC威胁和PLS解决方案也进行了广泛研究。根据我们的研究，我们提出了一种新的室内VLC安全模型，以结合多种PLS技术来实现VLC网络中的保密性能，从而实现波束成形，安全的通讯区和友好的干扰。针对接收光功率和信噪比（SNR）的仿真结果证明，所提出的室内VLC模型可以提高保密性能。当用户的SNR超过100 dB且光接收功率达到15 mW时，恶意用户的SNR几乎达不到30 dB，而目标区域之外的接收功率为4 µW，从而增加了干扰水平。最后，概述了VLC安全性方面的未来研究方向，以鼓励未来的研究。恶意用户的SNR几乎达不到30 dB，目标区域外的接收功率为4 µW，从而增加了干扰水平。最后，概述了VLC安全性方面的未来研究方向，以鼓励未来的研究。恶意用户的SNR几乎达不到30 dB，目标区域外的接收功率为4 µW，从而增加了干扰水平。最后，概述了VLC安全性方面的未来研究方向，以鼓励未来的研究。