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πLI-FI
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Li-Fi, or light fidelity, is a Visible Light Communications (VLC) system.
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Unlike Wi-Fi, which uses radio waves, Li-Fi runs on visible light.
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It transmits data at terabits per second speeds β more than 100 times the speed of Wi-Fi.
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It accommodates a photo-detector to receive light signals and a signal processing element to convert the data into βstream-ableβ content.
ADVANTAGES OF LIFI
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Li-Fi could make a huge impact on the internet of things, with data transferred at much higher levels with even more devices able to connect to one another.
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Due to its shorter range, Li-Fi is more secure than Wi-Fi.
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Li-Fi systems consume less power.
DISADVANTAGES OF LIFI
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Main challenge is to create a Li-Fi ecosystem, which will need conversion of existing smartphones into Li-Fi enabled ones by the use of a converter/adapter.
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Visual light canβt pass through opaque objects and needs line of sight for communication.
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Interference from external light sources, such as sunlight and bulbs.
POTENTIAL APPLICATIONS OF LIFI
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Li-Fi can be used in street & traffic lights. Traffic lights can communicate to vehicles and with each other.
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Through use of Li-Fi, traffic control can be made intelligent and real-time adaptable. Each traffic and street light post can be converted into access points to convert roadsides into wireless hotspots.
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Vehicles having LED-based headlights and tail lamps can communicate with each other and prevent accidents by exchanging information.
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Visible light being safer, they can also be used in places where radio waves canβt be used such as petrochemical and nuclear plants and hospitals.
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They can be used in aircraft, where most of control communication is performed through radio waves.
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Li-Fi can easily work underwater, where Wi-Fi fails completely, thereby throwing open endless opportunities
for military & navigational operations.
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Transmitting power wirelessly, wherein smartphones will not only receive data through Li-Fi, but will also receive power to charge itself.
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