Impact of vehicle headlights radiation pattern on dynamic vehicular VLC channel

Alsalami, Farah Mahdi and Aigoro, Nurudeen and Mahmoud, Abdulrahman A. and Ahmad, Zahir and Haigh, Paul Anthony and Haas, Olivier C.L. and Rajbhandari, Sujan (2021) Impact of vehicle headlights radiation pattern on dynamic vehicular VLC channel. Journal of Lightwave Technology, 39 (10). pp. 3162-3168. ISSN 0733-8724 (https://doi.org/10.1109/JLT.2021.3064811)

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Abstract

This article develops a statistical large-scale fading (path loss) model of a dynamic vehicular visible light communication (VVLC) system. The proposed model combines the impact of inter-vehicle spacing and the radiation intensity distribution as a function of the irradiance angle which changes with the traffic conditions. Three models (Lambertian, Gaussian, and empirical) are utilized to examine the impact of vehicles headlights radiation pattern on the statistical path loss of VVLC system. The analytical model of channel path loss is validated by Monte Carlo simulation with the headlight model simulated with a raytracing software. The path loss values of the Gaussian model differ by 2 dB compared to the Lambertian model, irrespective of the traffic conditions while it differs by 24.6 dB during late night and 8.15 dB during rush hours compared to the empirical model of a Toyota Altis headlight. This variation shows that the radiation intensity distribution should be modelled for each vehicle's headlights from each manufacturer to ensure accurate VVLC channel model. The proposed Gaussian model provides a close approximation to describe such radiation pattern and can easily be adapted to model for different manufacturers' headlights.

  • Item type:Article
    ID code:87185
    Dates:
    Date
    Event
    15 May 2021
    Published
    9 March 2021
    Published Online
    4 March 2021
    Accepted
    28 November 2020
    Submitted
    Notes:© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Science > Physics > Institute of Photonics
    Depositing user: Pure Administrator
    Date deposited:06 Nov 2023 15:16
    Last modified:29 Apr 2024 00:59
    URI:https://strathprints.strath.ac.uk/id/eprint/87185
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