LEDs are substituting fluorescent and incandescent bulbs as illumination sources due to their low power consumption
and long lifetime. Visible Light Communications (VLC) makes use of the LEDs short switching times to transmit
information. Although LEDs switching speed is around Mbps range, higher speeds (hundred of Mbps) can be reached by
using high bandwidth-efficiency modulation techniques. However, the use of these techniques requires a more complex
driver which elevates drastically its power consumption. In this work an energy efficiency analysis of the different VLC
modulation techniques and drivers is presented. Besides, the design of new schemes of VLC drivers is described.