Photonics-Based LiFi Architecture for Secure Communication in Connected Autonomous Vehicles

Connected Autonomous Vehicles (CAVs) require a high-quality and reliable, and a safe experience requiring wireless communication in the future with low latency and safety-critical and cooperative driving applications. Spectrum congestion, interference, and the security threat are problems encountered by radio-frequency (RF) technologies only. In this paper, a photonics-based Light Fidelity (LiFi) architecture is suggested to suit secure automotive communications. The proposed system takes advantage of high-speed optical front-ends, photonic modulation, and line of sight limited propagation to improve physicallayer security as well as provide high data rates in vehicle-tovehicle (V2V) and vehicle-to-infrastructure (V2I) links. A secure algorithm to handover and establish a key is presented and the performance of the system is tested by simulating. They show a significant enhancement in the throughput and the decreased risk of eavesdropping relative to RF-only systems, providing evidence of LiFi as an interesting addition to intelligent transportation systems of the next generation.

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