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malayalam pdf of li fi technology
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I want malayalam pdf about Li Fi technology pls...
Post: #2
Li-Fi is a Wi-Fi high-speed, fully-connected, two-way wireless communication technology. The term was coined by Harald Haas and is a form of visible light communication and a subset of optical wireless communications (OWC) and could be a complement to RF communication (Wi-Fi or cellular networks) , or even a replacement in broadcast data contexts. It is a UV or infrared and almost ultraviolet visible light communication rather than the radiofrequency spectrum, part of the optical wireless communications technology, which contains much more information and has been proposed as a solution to the bandwidth limitations of RF.

This OWC technology uses light-emitting diode (LED) light as a means to deliver network, mobile and high-speed communications in a manner similar to Wi-Fi. It is projected that the Li-Fi market will have a compound annual growth rate of 82% from 2013 to 2018 and will be worth more than $ 6 billion per year by 2018.

Visible light communications (VLC) work by turning off and on the LEDs at a very high speed, too fast for the human eye to notice. While Li-Fi LEDs would need to be kept lit to transmit data, they could be dimmed to less-than-human visibility, while emitting sufficient light to carry data. Light waves can not penetrate the walls, which makes the range much shorter, though it is safer against hacking, compared to Wi-Fi. Direct line of sight is not required for Li-Fi to transmit a signal; The reflected light on the walls can reach 70 Mbit / s.

Li-Fi has the advantage of being useful in sensitive electromagnetic areas, such as in aircraft cabins, hospitals and nuclear power plants without causing electromagnetic interference. Both Wi-Fi and Li-Fi transmit data on the electromagnetic spectrum, but while Wi-Fi uses radio waves, Li-Fi uses visible light. While the US Federal Communications Commission UU. It has warned of a possible spectrum crisis because Wi-Fi is close to its maximum capacity, Li-Fi has almost no limitations in terms of capacity. The visible light spectrum is 10,000 times greater than the full radio spectrum. Researchers have achieved data rates of more than 224 Gbit / s, which is much faster than typical fast broadband in 2013. Li-Fi is expected to be ten times cheaper than Wi-Fi. The short range, the low reliability and the high installation costs are the possible drawbacks.

PureLiFi demonstrated the first available Li-Fi system, the Li-1st, at the Mobile World Congress 2014 in Barcelona. Bg-Fi is a Li-Fi system that consists of an application for a mobile device and a simple consumer product, such as an Internet of Things (IoT) device, with color sensor, microcontroller and integrated software. The light on the display of the mobile device communicates with the color sensor of the consumer product, which converts light into digital information. The light emitting diodes allow the consumer product to communicate synchronously with the mobile device.
 

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