Theoretical concepts and matlab modelling of VLC based MIMO systems

This paper presents the theoretical concepts and techniques involved in developing MATLAB models
to simulate the behaviour of a short-range 4x4 multiple-in, multiple-out (MIMO) visible light
communication (VLC) system. Within the scope of this paper, the material presented is contained in
four sections: the first section provides an introduction to light emitting diode (LED) based VLC systems; the second describes the theoretical concepts and MATLAB modelling of these systems,
specifically transmission, channel, receiver and channel estimation modelling; the third presents and describes a unidirectional 4x4 MIMO VLC system model; and finally, the fourth present's conclusions and further work.