Energy Efficient Li Fi

We have developed a new algorithm that avoids the typical 50% spectral efficiency loss in visible light communications when the LED is driven close to the turn-on voltage. This is an important breakthrough because the new algorithm enables energy-efficient Li-Fi links and dimming close zero. A typical scenario where this feature is instrumental is the communication link between a mobile terminal and the Li-Fi access point (uplink) where there is no need for additional illumination as opposed to downlink scenarios where the Li-Fi access point serves two functions - broadband data communication and room illumination. This paper will be presented at ICC 2014, 10-14 June 2014, Syndey (Australia).