USF inventors have developed a technique in which beamforming is performed in the information domain without affecting the illumination. Varying the intensity of the light may allow for implementing RF signals with the visible light. The transmitted symbols are represented by the variation in the amount of light intensity. The average intensity for symbols with varying amplitude is considered equal, preventing any light from flickering. The invention addresses the controlling of the data directionality in VLC without hurting the ability of illumination. This finds potential applications in Li-Fi, vehicle to vehicle and underwater communications.
VLC Using an Array of Light Emitting Diodes