Optical Design of Low Beam Headlight and Channel Modelling for Visible Light Vehicular Communication

International Journal of Electrical and Electronics Engineering
© 2024 by SSRG - IJEEE Journal
Volume 11 Issue 11
Year of Publication : 2024
Authors : Charu Priya S, Deepa T, Shih-Hsin Ma, Po-Sung Huang, Cheng-Hung Tsai
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How to Cite?

Charu Priya S, Deepa T, Shih-Hsin Ma, Po-Sung Huang, Cheng-Hung Tsai, "Optical Design of Low Beam Headlight and Channel Modelling for Visible Light Vehicular Communication," SSRG International Journal of Electrical and Electronics Engineering, vol. 11,  no. 11, pp. 349-359, 2024. Crossref, https://doi.org/10.14445/23488379/IJEEE-V11I11P133

Abstract:

The motivation for Vehicular Visible Light Communication (VVLC) is the demand for automotive communication and the restricted bandwidth of Radio Frequency (RF) systems. VLC is a potential possibility for Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) Connectivity due to the wide use of Light-Emitting Diodes (LEDs). Within this work, a novel low-beam headlamp designed adheres to the ECE R112 standard. The proposed design comprises the LED, ellipsoid reflector, mirror, baffle, and lens from which the optical path and power are determined with the help of non-sequential ray tracing. After importing this data into MATLAB, the relevant Channel Impulse Response (CIR) and accurate path loss are determined. The total luminous intensity from the proposed headlamp is 308.5 lm, and the overall effectiveness is 56.13%. This non-sequential ray tracing result is analyzed in comparison with the path loss model proposed and a linear model. The proposed path loss obtained for this headlamp is -56 dB, approximately 14 dB less than the Lambertian model.

Keywords:

Channel impulse response, Channel modelling, Low-beam headlamp, Optical wireless communication, Path loss, Vehicular communication, Visible light communication.

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