Abstract
Visible Light Communication (VLC) is a key technology for the sixth-generation (6G) wireless communication thanks to the possibility of using artificial environmental lights as a data transfer channel. Although VLC systems are more resistant against interference and less susceptible to security vulnerabilities like most wireless networks, VLC is even inherently susceptible to eavesdropping attacks. Moreover, since VLC is considered an enabling technology for 6G, specific mechanisms are needed to enforce data security. This paper considers improving the security of the next generation of wireless communications by using the Watermark Blind Physical Layer Security (WBPLSec) in VLCs. The main intuition is that RGB LEDs offer the possibility for Wavelength Division Multiplexing (WDM) as a useful support for the Spread-Spectrum (SS) watermarking. In this paper, we propose an approach that aims at obtaining VLC Physical Layer Security (PLS) by combining watermarking with an RGB LED jamming. We provide a performance analysis of the proposed security architecture based on the secrecy capacity in terms of its existence and outage probability. We prove that WBPLSec can be used to significantly improve confidentiality in the next generation of wireless communications. The results offer the possibility of creating a secure region around the legitimate receiver by leveraging the jamming optical power.
Highlights
The sixth-generation (6G) mobile communication technology is one of the emerging research areas which will change our society
This paper focuses on a particular architecture that uses watermarking and jamming to improve communications security by operating at the physical-layer and creating a secure region around the legitimate receiver
In a paper presented in 6G Wireless Summit 2020 [14], we provided a first proposal on how to apply a watermark-based physical layer security solution to Visible Light Communication (VLC)
Summary
The sixth-generation (6G) mobile communication technology is one of the emerging research areas which will change our society. Its launch is expected around 2030 when our society it is expected to be data-driven and unlimited wireless connectivity [1], [2]. The next-generation communications system aims to achieve high spectral and energy efficiency, low latency, and massive connectivity because of the extensive growth of telecommunications systems. Internet of Things (IoT) systems generate a massive amount of data transmitted via a networking infrastructure connecting plenty of communicating computing devices. In such a scenario, the risk of cyberattacks is very high.
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