Improving performance of indoor visible light communication systems with hexagonal designed LED transmitters

We discuss a simulation program for indoor visible light communication system with hexagonal LED array shape that will allow us to focus the luminance of optical light for the room center with neglecting of the boundary since they will be occupied by furniture. It is assumed that users will not be in those areas. We are going to model OOK, PPM and QAM modulation techniques with varied semi-angle degrees, as a result we want to prove with hexagonal shape we could make and uniform luminance in the room. MATLAB and Simulink will be used for simulation.