Friday, January 20, 2012

Wi-Fi vs Li-Fi Latest Technology growing up

Light Fidelity or Li-Fi is a Visible Light Communications (VLC) system that operates with high speed wireless communications. Li-Fi uses common household LED lightbulbs to transmit data at up to 224 gigabits per second. This allows the transfer of data. Professor Harald Haas of Edinburgh University coined the term Li-Fi for a 2011 TED Talk. Haas imagined light bulbs which might function as wireless routers. In 2012, Haas then launchedpureLiFi in order' to be the world's leader in visible light communication technology' after four years of research. 

How it works
Li-Fi and Wi-Fi are quite similar to electromagnetically transmitting data. However, while Li-Fi works under visible light, Wi-Fi uses radio waves. Li-Fi is a Visible Light Communications (VLC) system, as we know today. This makes it possible to receive a light signal from a photo detector and to transform data into' streamable' content by a signal processing element. An light bulb is a semi-conducting light source that can diminish and dim upward at extremely high speeds, without being seen by the human eye, with the current of electricity supplied to a light bulb with a LED. 

For example, data are fed into the LED luminaire (with signal processing technology) and then transmitted to the photodetector (photodiode) at fast speeds (incorporated to its beam). The tiny changes when LED bulbs are quickly dimmed are then converted into an electric signal by the' receiver.' The signal is then transformed to a binary data stream which we recognize as web, video and audio applications running on the internet. 

Li-Fi vs Wi-Fi
Although some might think Li-Fi leaves Wi-Fi in the powder with its 224 gigabit a second, the exclusive use of visible light by Li-Fi could stop a mass consumption. In order for Li-Fi signals not to pass walls, capable LED bulbs must be placed throughout the home in order for them to be fully connected. Not to mention, Li-Fi requires the lightbulb to be on at all times, so the lights must be on during the day. Moreover, there is a lack of Lightbulbs, so Li-Fi has a hit in public Wi-Fi networks and there is a lack of Lightbulbs. In a message yesterday, there is a standard Wi-Fi extension and Wi-Fi. 
This new project calls for the connectivity range to double while using less power. Wi-Fi HaLow is therefore reportedly ideally suited for battery powered devices like smartwatches, smartphones and the Internet of objects such as sensors and intelligent applications. But not everything is doom and dumbness! Thanks to its impressive accelerations, Li-Fi could also make an enormous impact on the internet, transferring data to higher levels with even more devices that can connect. Moreover, due to its shorter range, the Li-Fi is safer than Wi-Fi, and embedded light beams that can still reach 70 megabits / second can be reflected off a surface. 

The future of Li-Fi
pioneers joined Lucibel in November last year, with the aim of producing Li-Fi enables products later in this year. Lucibel is a French Lighting company. The LiFlamme ceiling unit for connecting to the LED light fixture and li-flaming desktop unit that connects to a device via USB, all of which are aimed at providing the light and connectivity in a single device, already have two products on the market. Moreover, it is an interesting space for companies with faster connectivity and data transmission. The integration of the web of devices and Li-Fi offers retailers and other companies a wealth of opportunities. 

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