  In this paper, we address the optimization of wavelength resource allocation
in multi-user WDM Visible Light Communication (VLC) systems. A Mixed Integer
Linear Programming (MILP) model that maximizes the sum of
Signal-to-Interference-plus-Noise-Ratio (SINR) for all users is utilized. The
results show that optimizing the wavelength allocation in multi-user WDM VLC
systems can reduce the impact of the interference and improve the system
throughput in terms of the sum of data rates for up to 7 users.
