Limitations in VLC Systems: A Study

Mitigation of nonlinearity is very important factor as it influences the performance of a visible light communication (VLC) system. In this paper several nonlinearities and limitations of VLC systems are analyzed as a review study and detailing about some previous papers to develop a new logic as well as researching for VLC systems and future scopes to make a VLC system reliable. Nonlinearity is discussed and mainly focused in this paper as a main limitation of VLC. This paper discusses about a mitigation technique which is already proposed with micro light emitting diodes (LED) in cooperation with multiple access schemes here mainly CDMA is considered. Nonlinearity limits the performance in terms of bit error rate as well as error vector magnitude. Nonlinearity mitigation methods are proposed earlier but that system designs are not suitable for indoor and industrial applications, because such design required additional circuits, which make the system high cost and complex. This paper can be considered as a literature survey or a case study to analyze VLC and a search for new scopes in VLC.