Effectiveness of blue-filtering in WLED based indoor Visible light communication

Visible light communications typically uses a white LED as a data source. Most white LEDs use a slow yellow phosphor combined with a blue LED that has a faster response. An optical filter is often used to remove the slow yellow light before detection. However the need for, and effectiveness of, blue filtering is highly dependent on practical factors such as illumination level, optics gain, and receiver noise characteristics. In this paper, we model a simple indoor Visible light communication environment, and then investigate the effect of blue filtering, and how an optimum blue filter might be chosen.