The demand for high speed data communication and seamless user connectivity is increasing day by day which lead towards the development of new next generation communication services. Wi-Fi, the most popular wireless networking technology uses radio waves as medium for transmission. However, it has a constraint over security, reliability, speed and range of transmission. Li-Fi addresses these issues by providing a high-speed communication which is tremendously faster than Wi-Fi. Furthermore, it is also considered an ideal candidate for secure communication. In this paper, we present a survey on Li-Fi communication technique and different architectures which have been proposed over the past for achieving high speed communication using visible light. In addition to this, this paper also discusses the key challenges which are being faced nowadays in achieving optimal visible light communication.
展开▼
