Multiplexing with visible light communication

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Fehér Gábor
Department of Broadband Infocommunications and Electromagnetic Theory

Nowadays, with the spread of mobile devices and the continuous technological advancements, there is a growing demand for development of new wireless communication methods with high speed, great accessibility and good reliability. In addition, the level of integration in electronic devices noticeably increases, which leads to multi-functionalization.

Taking account of the facts mentioned above, it seems logical to consider visible light as a media of wireless communication, as a new communication network with great capacity can be obtained by performing minor modifications to the already existing lighting systems. Since LED modules gain more and more popularity, visible light communication becomes a real alternative in a variety of applications, among which the indoor positioning seems to be the most promising.

In my thesis I examined multiplexing techniques that can guarantee multiple access on a visible light communication channel. During my work, I created electronic circuits and developed multiple access methods that made it possible to set up an application capable of indoor positioning; finally, I analysed the efficiency of these methods by measuring the relevant parameters of the system.


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