LiFi – Light Fidelity: The future of the internet is right here now. Forget about signals carrying your data which is so called Wireless Fidelity or Wi-Fi. The future is with Light traveling along with your information. Lifi is the new way to look at technology and Wi-Fi. They call the 1990s and 2000s as the time of growth in technology as people started to explore a lot in the field of informatics. Then comes a massive growth in mobile data traffic during those periods, which brought the wireless communication technology into use. Even though the technology is growing with new standards and advancements, the mobile data usage continue to increase. As per reports, more than
Even though the technology is growing with new standards and improvements, the mobile data usage continue to grow. As per reports, more than 11 crore Terabytes of data will have to be passed through phone networks every month, by 2017. Replacing some Radio frequency technology like Wi-Fi, with a new technology that doesn’t use Radio frequency like Li-Fi, can provide a possible result. Read our detailed report on Everything about Li-Fi – Light Fidelity: Wireless Technology with Future.
Wifi vs Lifi: Wireless Fidelity vs Light Fidelity
Wi-Fi stands for Wireless Fidelity. For devices Based on IEE 802.11 standards, this wireless technology is used for wireless local area networking (WLAN). This communication is promoted by Wi-Fi Alliance, a non-profit organization. They certify the Wi-Fi products if they fit for standards of interoperability, which is a feature of any product, whose interfaces cope up with other products for accessing or implementing without any restrictions. Smartphones, laptops, personal computers, modern printers and other advanced technologies which require data sharing can use this network.
These devices can connect to the internet through WLAN and a wireless access point (WAP). This access point is different from hotspot connection, as the hotspot is a physical location for getting access to the Internet from Wi-Fi, whereas wireless access point is a hardware device for providing wireless network linking. The Indoor range for these access points and hotspot is about 20 meters and a larger outdoor range. According to International Telecommunication Union (ITU), this Hi-Fi radio communication works under decimetre band as the wavelength of signal varies from 1 meter to 1 decimetre and which has a frequency range of 300MHz to 1GHz.
Li-Fi- lifi Internet: What is LiFi technology and How does Li-Fi Work?
Light Fidelity, is an optical wireless communication technology. Lifi is considered to be the future of Wireless technology which uses light waves to transfer data. The term Lifi is made up by Harald Haas, in 2011 TED Global talk. It is an advancement in radio frequency communication. LiFi works under the wire and ultraviolet visible-light frequencies or infrared (700nm-105nm) and near-ultraviolet frequencies (300nm-400nm) rather than radio frequency (1mm to 100km). The working principle of this optical technology is same as that of wireless fidelity. Here the light from LEDs (Light emitting diodes) is used as the medium of transmission for fully networked, and high-speed communication. The operation is very simple where switching the LEDs off and on determines the working of this light fidelity, and it is visible to human eye.
What does Li-Fi hold?
The first and foremost feature that one wants to look up in this magical technology is the duplex communication. Duplex in a sense, the data can be either transmitted or received between two users. To say exactly, Li-Fi is a full duplex communication system. For example, telephone, where two users engaged in a conversation with each other in which both can transmit (talk) and receive (hear) data. This clearly depicts the advantage over wireless fidelity, where the receiver can’t transmit the data, and the transmitter can’t receive the data simultaneously, and so it is a half-duplex system. Next advantage is that this technology can be used in electromagnetic sensitive areas like nuclear power plants, aircraft, hospitals where the electromagnetic interference commonly occurs which may result in significant loss of the transferred data.
Electromagnetic interference is the disturbance caused by the data transferring in such areas which may affect many electrical circuits. Just one can define such effects as jamming, which may stop the functioning of the circuit in critical states. Since Li-Fi utilizes visible light, there are no limitations on its capacity which is a greater significance over wireless fidelity as there is a potential spectrum crisis because Wi-Fi is close to full capacity as warned by US Federal Communications Commission. The frequency range can simply show that visible light is 103 times larger than the radio waves.
The only limitation this optical awesomeness possess is the range with which it transmits, as walls can block it and so it is dependable. Even though walls block the light, this has a magical advantage, hidden. The future home and building automation will depend on this Light communication. Also, it can be blocked by walls, results in a shorter range which makes this more secure that cannot be hacked from a remote location. It is anticipated to be much cheaper than wireless fidelity.
This awesomeness of Internet Lifi found to be transmitting data over 224 Gbit/s as said by researchers. By August 2013, more than 1.6Gbit/s of data rates exhibited. Stins Coman, a Russian company, proclaimed that they developed a module called Beamcaster in April 2013, which transfers data over 1.25Gbit/s and they anticipate boosting speeds over 5Gbit/s in the upcoming years. A Mexican company, Sisoft proclaimed that they were able to get data rates over 10Gbit/s.
Which Applications use Lifi Internet
As mentioned earlier, this optical system is more secure and not hackable due to its unique importance. For guaranteed data transfer, Lifi can be used in various defense systems. As the light can travel through water up to 1000metres, it has some grandness in marine applications when compared to Wi-Fi which cannot transmit through water. Road safety can be increased in a significant way by installing this technology in lights of vehicles so that one can communicate with another through front light and back light or indicators, which may give an alarm. Street lights and traffic signals can be used for providing valuable information about directions or online map.
While comparing lifi vs wifi, Lifi wins the game with higher application usage and greater strength to carry the data up to 224 GB/s with Lifi Internet. However, the Li fi router is not commonly available, but you can get it from purelifi.com.