Mixed RF-VLC Relaying Systems for High-Speed Rail Communication

In the proposed system setup, a communication link is established between base station (BS) and end-user (UE) via a relay node mounted on the high-speed train (HST). The information is conveyed over backhaul RF links between BS and relay and over VLC links between relay and UE inside the train. It i...

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Veröffentlicht in:IEEE photonics journal 2023-10, Vol.15 (5), p.1-12
Hauptverfasser: Singh, Rupender, Ahmad, Ijaz, Huusko, Jyrki
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description In the proposed system setup, a communication link is established between base station (BS) and end-user (UE) via a relay node mounted on the high-speed train (HST). The information is conveyed over backhaul RF links between BS and relay and over VLC links between relay and UE inside the train. It is assumed that RF links are encountered with dual shadowing due to slow-moving vehicles and pedestrians. Moreover, the relay node is not able to estimate the channel information perfectly due to HST mobility. Firstly, the statistical characteristics, such as the probability density function (PDF) and cumulative distribution function of the BS-relay link, are derived under imperfect channel information. Then, the system performance is examined by deriving the two key metrics, outage probability, and average bit error rate. Furthermore, we investigate the secrecy performance of the proposed system when the RF eavesdropper overhears the link between BSandrelay andthe VLC eavesdropper captures the information via the relay-UE link. To this end, the secure outage probability is derived into a closed form. Our results reveal that the proposed system setup can be adopted as a network architecture for existing as well as for future HST networks.
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subjects 5G mobile communication
Bit error rate
Channel estimation
Channel state information (CSI)
Computer architecture
Distribution functions
Doppler shift
double shadowed Rician (DSR) fading
Eavesdropping
Error analysis
Fading channels
High speed rail
high-speed train (HST)
Links
Outages
Pedestrians
Probability density function
Probability density functions
Radio frequency
Relay
Relaying
Relays
Statistical analysis
Visible light communication
visible light communication (VLC)
title Mixed RF-VLC Relaying Systems for High-Speed Rail Communication
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