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Li-Fi Technology: New Revolution In The Field Of Data Communication
2016
Light Fidelity (Li-Fi) technology makes the data transmission possible through visible light which enables user to transmit large amount of data at very high speed. The Li-Fi provides better bandwidth, efficiency, availability and security as compared to existing technologies (Wi-Fi).The technology's base component is LED(Light Emitting Diodes) bulb. By taking into account the low cost nature of LEDs and lightning units there are many opportunities to exploit this medium and in the future a street lamp can be used for public internet access as well as a number of Li-Fi hotspots can be created and used optimally.
The Future of LiFi Technology to Transfer the Data
A Li-Fi network is a novel wireless technology that provides connection within a network. Li-Fi is an abbreviation for light-fidelity, which was proposed by German physicist Herald Haas. It transmits data via illumination by delivering data through an LED light bulb whose intensity fluctuates quicker than the human eye can follow. Practically LiFi is interference-free and safer than radio technology such as Wi-Fi or cellular networks. It involves use of light instead of radio frequencies to transmit data. Radio frequency communication requires complex radio circuitry, antennas, and receivers, while LiFi is much simpler and uses direct modulation techniques.
Lifi technology in future benefits in several sectors
JOURNAL OF SCIENCE, COMPUTING AND ENGINEERING RESEARCH
Whether you are the usage of wireless net in an espresso shop, stealing it from the man subsequent door, or competing for bandwidth at a conference, you have probable gotten pissed off at the gradual speeds you face when extra than one system is tapped into the network. But radio waves are clearly one section of the spectrum that can raise our data. What if we can also wish to use exclusive waves to surf the internet? One German physicist. Harald Haas, has come up with a reply he calls “Data Through Illumination”—taking the fiber out of fiber optics with the resource of potential of sending records thru an LED moderate bulb that varies in intensity faster than the human eye can follow. And safety would be a snap—if you can’t see the light, you can’t get entry to the data. Li-Fi is a VLC, considered slight communication, technological perception developed by way of using a crew of scientists collectively with Dr Gordon Povey, Prof. Harald Haas and Dr Mostafa Afgani at the University ...
Whether you’re using wireless internet in a coffee shop, stealing it from the guy next door, or competing for bandwidth at a conference, you’ve probably gotten frustrated at the slow speeds you face when more than one device is tapped into the network. As more and more people and their many devices access wireless internet, clogged airwaves are going to make it increasingly difficult to latch onto a reliable signal. But radio waves are just one part of the spectrum that can carry our data. What if we could use other waves to surf the internet? One German Physicist, DR. Harald Haas, has come up with a solution he calls “Data Through Illumination”—taking the fiber out of fiber optics by sending data through an LED light bulb that varies in intensity faster than the human eye can follow. It’s the same idea behind infrared remote controls, but far more powerful. Haas says his invention, which he calls D-Light, can produce data rates faster than 10 megabits per second, which is speedier than your average broadband connection. He envisions a future where data for laptops, smart phones, and tablets is transmitted through the light in a room. And security would be a snap—if you can’t see the light, you can’t access the data. Li-Fi is a VLC, visible light communication, technology developed by a team of scientists including Dr Gordon Povey, Prof. Harald Haas and Dr Mostafa Afgani at the University of Edinburgh. The term Li-Fi was coined by Prof. Haas when he amazed people by streaming high-definition video from a standard LED lamp, at TED Global in July 2011. Li-Fi is now part of the Visible Light Communications (VLC) PAN IEEE 802.15.7 standard. “Li-Fi is typically implemented using white LED light bulbs. These devices are normally used for illumination by applying a constant current through the LED. However, by fast and subtle variations of the current, the optical output can be made to vary at extremely high speeds. Unseen by the human eye, this variation is used to carry high-speed data,” says Dr Povey, Product Manager of the University of Edinburgh's Li-Fi Program ‘D-Light Project’.
International Journal of Science Technology & Engineering
Nowadays many people are taking interest as to accomplish their tasks through wired or wireless networks. As numbers of users get increased in wireless network the speed reduces proportionally. Though Wi-Fi gives us speed up to 150 Mbps as per IEEE 802.11n. it is still insufficient to accommodate desired no of users. To remedy this limitation, we are introducing the concept of Li-Fi. As per German physic Harald Haas “data through illumination” –taking the fiber out of fiber optic by sending data through an LED light bulb that varies in intensity faster than the human eyes can follow. It’s the same idea band behind the infrared remote controls but far more powerful. Haas says his invention, which he calls D-LIGHT, can produce data rates faster than 10 Mbps, which is speedier than average broadband connection. Twentieth century is an era of internet. Most of the communications happen over the internet. Wi-Fi is the currently most advanced technology that is being widely used for connecting to the internet. The speed and the number of users that can connect at a time are limited in Wi-Fi. Our project is about visible light communication. This communication happens using light as a medium. As light is going to act as a medium the speed will be tremendous for data transmissions. Not only speed but also the security in a closed environment will increase with the use of Li-Fi. Our project aims at exploring the use of Li-Fi also known as optical wireless communication.
LI-FI Technology – A Visible Light Communication
— At the time of using wireless internet at any place whether it is own or stealing from others, one has probably gotten frustrated because of the slow speed of internet when more devices are connected to a single router. Due to increasing of internet users exponentially, Radio Spectrum is congested but the demand for wireless data double each year. Dr. Harald Haas has come up with a solution for those he calls " Data through illumination ". LI-FI is a new epoch of high intensity light source of solid state design which bring clean lighting solutions to general and specialty lighting. LI-FI is now part of the VLC as is implemented using white LED light bulbs. Data transmission takes place from this LED bulb by varying the current at extremely high speeds which undetectable by the human eye.