Li-Fi

Li-Fi, is bidirectional, high speed and fully networked wireless communications, like Wi-Fi, using light.

It is wireless and uses visible light communication or infra-red and near ultraviolet(instead of radio frequency waves) which carries much more information, and has been proposed as a solution to the RF-bandwidth limitations.

Details

• It's 5G (5th generation mobile network)
• Uses light from light-emitting diode as a medium
• It is networked and mobile.
• Delivers high-speed communication in a similar manner as Wi-Fi.
• 250 times faster than superfast broadband

Li-Fi could lead to the Internet of Things

The Li-Fi market is projected to have a compound annual growth rate of 82% from 2013 to 2018

The Li-Fi market is estimated to be worth over $6 billion per year by 2018

SPECIFICATIONS

• Li-Fi bulbs would have to be kept on to transmit data
• The bulbs could be dimmed so that they were not visible to humans
• Both Wi-Fi and Li-Fi transmit data over the electromagnetic spectrum
• Wi-Fi utilises radio waves, Li-Fi uses visible light.
• The visible light spectrum is 10,000 times larger than the entire  spectrum

ADVANTAGES

• More secure from hacking, relative to Wi-Fi
• Direct line of sight isn't necessary for Li-Fi to transmit
• Li-Fi has the advantage of being useful in electromagnetic sensitive areas
• Li-Fi is expected to be ten times cheaper than Wi-Fi
• Researchers have reached data rates of over 10 Gbit/s

DISADVANTAGES

• Short range
• Low reliability
• High installation costs

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