Reduction of channel correlation for multiuser-MIMO system in visible light communications

The present paper proposes a method in which a multiuser system with different receivers having different Field of view (FOV) has been used to reduce channel correlation in visible light communication (VLC), which will be helpful for signal separation at the user terminal. FOV of receivers would be different at different room location based on RMS delay of reflected light from walls. In the simulation, both LOS and NON-LOS components of light have been considered. Simulation results show that as delay decreases bit rate increases. Therefore receiver with narrower FOV is placed at the center of the room as the bit rate is maximum at that location whereas FOV with wider FOV is placed at the corner.