Spatial performance of color clustered VLC-MIMO due to incompleteness of color filters

Abstract

Recently, visible light communication(VLC) is widely researched due to the spreading of LED usage. It satisfies demands of ubiquity and high speed communication. However, it is impossible to transmit the phase information and frequency information due to limitation of LED. From this reason, the achievable transmission rate is worse than that of wireless communications. To solve this problem, color clustered MIMO(multiple-input multiple-output) system that takes advantage of independency of the three primary colors of the light has been proposed. However, color filters which use on this system are supposed ideal one that extracts only a desired signal. Realistic color filters have the incompleteness which extract signals except a desired signal. Therefore, in this paper, we evaluate and clarify the spatial performance of color clustered VLC-MIMO system with incompleteness of color filters.