THE FUTURE OF WIFI

 When we think of wireless internet connection what comes to mind?  Wifi I guess? Oh yes, Wi-Fi, Wi-Fi, Wi-Fi is all that comes to mind but there is more, better, safer and faster. I guess your mind came no where close to this. 

         

This simple light bulb can and is capable to work efficiently more than or Wi-Fi and this is called... Li-Fi ,Copy cat you would say right? :-D but see what was said about this Wi-Fi light bulb.

Li-Fi is an upcoming new method for transmitting data wirelessly over the visible electromagnetic spectrum. It distinctly differs from Wi-Fi – in this case Li-Fi is using a light source, such as an LED light bulb, to effectively provide Internet access to wireless devices within its reach. In comparison to Wi-Fi, Li- Fi uses visible light as its data transfer medium, whereas Wi-Fi uses radio waves at frequencies of either 2.4 gigahertz (GHz) or 5 GHz.

 

Recently, this new wireless technology has been successfully tested in a working office. Just this week, Estonian tech startup

Velmenni proved the capabilities of Li-Fi as the future wireless networking protocol. Using a standard LED light bulb as the light source, a working Internet connection, and a photodetector, Velmenni was able to transmit data over Li-Fi at speeds of just over 1 Gbps (gigabit per second). During its testing, the tech startup allowed a few people to access the Internet using the visible light from the LED bulb. In laboratory testing, Li-Fi boasts of a theoretical maximum possible speed of up to 224 Gbps – significantly faster than the fastest available Wi-Fi protocol to date. The latest Wi-Fi protocol, 802.11ac, has a maximum theoretical downlink throughput of only 1.3 Gbps. Li-Fi was invented and first demonstrated by Professor Harald Hass from the University of Edinburgh during his talk at a TED (Technology, Entertainment and Design) conference held four years ago. Haas also coined the term “Li-Fi” which was purely based on its working concept of light-powered wireless data transfer and contrast to the term “Wi-Fi”. Haas presented a working demo of Li-Fi in 2011 using an LED lamp that was able to stream video wirelessly.

However, with all of these advantages, also comes its drawbacks. Li-Fi cannot be used in outdoor applications where it can make contact with direct sunlight as the light rays from the Sun can interfere with the transmission through this medium. Also, since the technology relies on visible light, Li-Fi cannot pass through walls to transmit data, meaning it can only be used in closed spaces, to complement existing Wi-Fi availability, or in specific places where Wi-Fi is prohibited. 

:-( everything has its odds You'ld agree.

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About Torricelli

Stephen Djes is a passionate Graduate of Engineering from the University of Benin, and he is geared towards helping fellow engineering students in the great institution of UNIBEN to do better at academics.