Secrecy capacity of LiFi systems

Hanaa Abumarshoud; Mohammad Dehghani Soltani; Majid Safari; Harald Haas

doi:10.1117/12.2575810

20 September 2020 Secrecy capacity of LiFi systems

Hanaa Abumarshoud, Mohammad Dehghani Soltani, Majid Safari, Harald Haas

Proceedings Volume 11540, Emerging Imaging and Sensing Technologies for Security and Defence V; and Advanced Manufacturing Technologies for Micro- and Nanosystems in Security and Defence III; 115400Y (2020) https://doi.org/10.1117/12.2575810
Event: SPIE Security + Defence, 2020, Online Only

Abstract

Radio frequency (RF) signals propagate through most materials that we are surrounded by while light is blocked by many of these materials. This feature makes wireless networks based on light (which are also referred to as LiFi networks) inherently more secure. However, it can also lead to sudden link failure if the legitimate data link is blocked because of user movements or changes in device orientation. In this paper, the secrecy capacity has been analysed with the consideration of imperfect channel state information, random device orientation and probability of link blockage for the case of a single eavesdropper. It has been found that the secrecy capacity almost doubles in a standing activity as opposed to a sitting activity and that the density of blocking objects degrades the secrecy capacity in single access point networks. It is evident that environmental factors and user behaviour have a significant impact on the secrecy performance and, thus, need to be considered for robust physical layer security (PLS) design in LiFi networks.

Conference Presentation

Citation Download Citation

Hanaa Abumarshoud, Mohammad Dehghani Soltani, Majid Safari, and Harald Haas "Secrecy capacity of LiFi systems", Proc. SPIE 11540, Emerging Imaging and Sensing Technologies for Security and Defence V; and Advanced Manufacturing Technologies for Micro- and Nanosystems in Security and Defence III, 115400Y (20 September 2020); https://doi.org/10.1117/12.2575810

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