Spectral Efficient and High Performance LiFi Color Dimming

This paper presents a color dimming (CD) method for Light Fidelity (LiFi), enabling the ability to change the color of a light-emitting-diode (LED) and adjust the brightness of the light. The proposed CD scheme targets both high spectral efficiency and high signal-to-noise ratio (SNR). In order to achieve a high spectral efficiency, a superposition modulation scheme called augmented spectral effic...