Fig. 2 shows a diagram of the equalized VLC system under
consideration. The VLC transmitter consists of a white Luxeon
Star LED (with a 45 beam-shaping lens) whose emitted light
is modulated and driven by a data signal and a direct current
Fig. 1. (a) LED optical spectrum, inset: Luxeon white LED, and (b) modulation
bandwidths of individual components and blue-response fitting curve.