期刊名称：International Journal of Information and Communication Technology Research
电子版ISSN：2223-4985
出版年度：2016
卷号：6
期号：4
出版社：IRPN Publishers
摘要：Light Fidelity is a technology that has received attention in the recent years due to its ability to achieve high multiplexing by combining many data sources together and transmitting their data through wireless means. This networking technology permits the propagation of data through illumination by use of light emitting diodes, which is then received by the photo-detectors located at the destination devices. These diodes vary in light intensity faster than the human eye can trail. They are normally equipped with a circuit that modulates the light imperceptibly for optical data transmission. Li-Fi data is transmitted by the LEDs located at the transmitter and received by photoreceptors situated at the destination side. In this type of communication, when the LED is on, the data that is transmitted is a digital 1. On the other hand, when the LED is off, a digital '0' is transmitted. It is possible to encode data in the light by varying the rate at which the light emitting diode bulbs flicker on and off to give different strings of 1s and 0s. Since the LED intensity is modulated so rapidly that human eye cannot recognize, it makes the output to appear invariable to an observer. In this paper, this technology was simulated to demonstrate how it can be utilized on a different perspective: to enhance network security in wireless hotspot.
