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APPLICATIONS AND ISSUES IN VISUAL LIGHT COMMUNICATIONS

Sharanbasappa Shetkar

Abstract


Large increases have been observed in the utilizations of Solid-State Lighting based on LED or Light Emitting Diodes in recent times all over the world. Compared to conventional sources of light the Light Emitting Diodes are found to possess an extremely high life-times and are extremely energy efficient and very reliable. Taking into consideration the enormous advantages that exists for light emitting Diodes, they are now being utilized in larger and larger number of application areas [2-3] and in future they will take over the positions of conventional light sources in the lighting industry. Apart from these, another quality of Light Emitting Diodes is that they can withstand fast switching that make them eligible for use at telecommunications purposes apart from being used as sources of light. VLC or Communications via visible light or Visible Light Communications is a novel technology of communications which utilizes Light Emitting Diodes that are efficient energetically and are used for both wireless communications and for lighting purposes. Visible Light Communications allows usage in any areas due to its non-harmful nature to human bodies, unrestricted by legal procedures and as a result it permits transmission of large signal powers in the visible frequencies i.e., from 380 THz to 780 THz. Communications at extremely reduced price and at fast transmission rates are possible via Visible Light Communications. As a result, it is evident that Visible Light Communications will have large potential because it has seen rapid development. The highest rate of transmission of data has seen increase from 80 Megabits per second in 2008 [4] to 3000 Megabits per second in 2014 [5] in a span of 6 years.


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References


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