Li-Fi: Wireless internet via lightbulbs not radio waves

Meet-Li-Fi-The-LED-Based-Alternative-to-Wi-Fi

Chinese scientists have made headway with successful experiments using Li-Fi technology, where wireless signals are sent by lightbulbs, according to Xinhua News.

chi nan fudan university(Professor Chi Nan, Fudan University. (credit: Fudan University)

Four computers under a one-watt LED lightbulb may connect to the Internet under the principle that light can be used as a carrier instead of traditional radio frequencies, said Chi Nan, an IT professor at Shanghai’s Fudan University.

She explained a lightbulb with embedded microchips can produce data rates as fast as 150 Mbps, much higher than the average broadband connection in China.

Current wireless signal transmission equipment is expensive and low in efficiency, noted Chi in the article. “As for cell phones, millions of base stations have been established around the world to strengthen the signal but most of the energy is consumed on their cooling systems,” she explained, but noted the energy utilization rate was only 5 percent.”

 

Read More: http://www.zdnet.com/cn/china-achieves-wireless-internet-access-via-lightbulbs-7000022108/

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