Experimental Observations on the Feasibility of VLC-Based V2X
Communications under various Environmental Deterrents
Abstract
Vehicle-to-Everything (V2X) using Visible Light Communication (VLC)
channels can be seen as an economically viable option to replace the
existing modes of vehicular communications in the near future. In this
paper, we have analyzed the performance of VLC based V2X communication
under various environmental deterrents viz. Light Fog, Dense Fog, Light
Smoke and Dense Smoke using a proof-of-concept testbed. A series of
experiments were conducted to investigate the effects of environmental
deterrents over VLC based Line-of-Sight as well as non-Line of Sight V2X
transmission with respect to distance and angular variations.
On-Off-keying (OOK) modulation has been selected as the modulation
scheme, as defined in VLC standard (IEEE 802.15.7) for the transmission
of information bits between a transmitter LED and a photo-diode
receiver. The experimental results show the feasibility of VLC-based V2X
systems with reliable data transmission under different environmental
deterrents with a fairly good signal-to-noise ratio (SNR), even under
dense-fog and smoke conditions where the attenuation in average optical
power at the receiver, is quite high.