Study on VLC Channel Modeling Under Random Shadowing

Recently, visible light communication (VLC) based on LEDs has attracted much attention. In order to realize multiusers indoor VLC systems, a reasonable channel model considering random shadowing, which is first proposed to the best of our knowledge, is significant. Taking the nonquantitative obstructions with random movement into account, by introducing the Poisson process and the probability density function, we propose a weighting function and set up a channel model. The expressions of the received optical power, the horizontal illuminance and the impulse responses are given. The verification of the model's feasibility is presented through simulation. Moreover, based on the proposed channel model, the simulation analysis of the effect of random shadowing on communication performance is conducted, and the corresponding simulation optimization is also made.