The Statistical Temporal Properties of Vehicular Visible Light Communication Channel

In this paper we study the temporal properties of vehicular visible light communication (VVLC) channel that take the dynamic nature of traffic conditions into consideration. We study two-dimensional temporal channel model considering the time and signal propagation delay. We also investigate the time stationary property and the time dispersion parameters of the channel based on a real-time traffic conditions at different time periods of the day. The results show that at high-density traffic, larger number of multipath components are received with higher amplitude and lower propagation delay than the multipath components received at low-density traffic. The results also show that the VVLC channel is time-variant nonstationary with flat and slow fading, at high-density traffic. However, the VVLC channel can be considered stationary for specific time duration with flat slow fading and the reflectors are uncorrelated at low-density traffic.