Light Fidelity (LiFi) is a wireless visible light communication technology, which answers the challenges of 5G. This paper explains the basic need of LiFi over WiFi. It describes the working methodology of LiFi and briefly discusses the various modulation techniques used in LiFi technology for data transmission. It also gives an overview of journey of visible light communication technology from ancient time to LiFi era. In this paper we have described the applications of LiFi in different domains which will help us to magnify the new research area in this technology.
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Swami et al. (2020) studied this question.
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