Instead of using modems, li fi uses led bulbs with transceiver. It will not replace these technologies, but will work seamlessly alongside them. Free seminar reports, ppt presentation topics and abstract. Lifi is a vlc, visible light communication, technology developed by a team of scientists including dr gordon povey, prof. For starters, lifi doesnt work under direct sunlight because the sunlight blocks the path of the ray of light given by the led lamp. Lifi documentation wi fi light emitting diode scribd. It mentions various lifi products such as lamps, kits, lifi smartphone etc. Refer lifi vs wifi products based on li fi technology. Abstract whether youre using wireless internet in a coffee shop, stealing it from the guy next door, or competing for bandwidth at a conference, youve probably gotten frustrated at the slow speeds you face when more than one device is tapped into the network. The technology is very new and was proposed by the german physicist harald haas in 2011.
Li fi provides better bandwidth, efficiency, availability and security than wi fi and has already achieved high speeds in the lab. Author lifi posted on march 23, 2016 february 16, 2018 categories lifi news, lifi technology tags lifi, lifi internet, lifi technology, lifi technology wikipedia wifi lifi wikipedia lifi wiki leave a comment on what is the difference between lifi and wifi internet what is li fi internet. This page covers products based on lifi technology. However, li fi bulbs are outfitted with a chip that modulates the light imperceptibly for optical data transmission. Why lifi light internet could replace wifi in 10 years. Li fi can be the technology for the future where data for laptops, smart phones, and tablets will be transmitted through the light in a room. Lightfidelity lifi international journal of computer science and. There are various li fi products such as lamps, kits, lifi smartphone etc. Here, data is transmitted using light whose intensity varies faster than human eye to capture. The emergence of lifi is to overcome the shortage of the current technology.
Presentation on li fi light fidelity the future technology in. The technology is supported by a global ecosystem of companies driving the adoption of lifi, the next generation of wireless that is ready for seamless integration into the 5g core. Pdf seminar report on li fi akanksha sharma academia. This emerging technology offers optical wireless communications by using visible light. Lifi is a mobile wireless technology that uses light rather than radio frequencies to transmit data.
By communication through visible light, lifi technology has the possibility to. This page compares lifi vs wifi describes basic difference between lifi and wifi technologies. Lifi technology seminar report and ppt for cse students. Although lifi can offer many advantages there are some disadvantages as well. Where to download lifi technology documentation lifi technology documentation li fi explained in this video, you will learn about the li fi technology, which is the abbreviation of the term light fidelity. Light fidelity is a new wireless communication technology which enables a wireless data.
Its worth remembering that lifi is not aiming to be a direct replacement for wi fi and cellular networks, its a complementary technology that will work well in certain situations. Radio frequency technology such as wi fi is vulnerable to interference from a wide range of devices such as cordless phones, microwaves and neighbouring wi fi networks. Research scholar, department of cse, swami vivekanand subharti university, meerut, u. Unlike wi fi, which uses radio waves for communication, li fi is based on visible light communication. The li fi technology can transfer the data through leds. It is a high speed and low cost wireless communication system, compared to wi fi. Image transmission using lifi bmes project ideas youtube. Lifi is the abbreviation of light fidelity and was expressed by harald hass who was a german physicist.
Lifi signals can be defined by the area of illumination, which means interference is much simpler to avoid and even stop altogether. Lifi technology in wireless communication revathi ganesan. Oledcomm is a world leader in lifi products which includes lifi routers, lifi hubs, led drivers, led lamps and complete kit for lighting system. Li fi is the future upcoming technology and this can transmit the information through light at high speed as compared to the present wireless technologies. It works on the principle of visible light communication i. Visible light part of the electromagnetic spectrum. Li fi technology, an introduction with the use of light radiating diodes li fi technology transfers data through wireless. A survey on lifi technology ieee conference publication. Li fi, which uses visible light to transmit signals wirelessly, is an emerging technology poised to compete with wi fi. Security would not be an issue because if you cant see the light, you cant access the data.
Technology imagine a world where every light could connect you to the internet. Transmission speeds of up to 10 gbps have been demonstrated in our lab and it has also been shown that lifi does not required lineofsight. The objective of lifi is transfer data through visible light. The term was first introduced by harald haas during a 2011 tedglobal talk in edinburgh in technical terms, lifi is a light communication system that is capable of transmitting data at high speeds over the visible light, ultraviolet, and infrared spectrums. Li fi technology ppt free download as powerpoint presentation. We all know that right now wifi is the most used technology to connect many devices to the internet. Li fi is a revolution of twenty first century data communication. That is, it uses light instead of radio waves to transmit information. We investigate lifi in the context of novel 5g technologies to solve the looming spectrum crisis in wireless communications. As time comes by, the use of internet based devices is increased. Technology purelifi welcome to immersive connectivity.
Since homes and offices already have led bulbs for lighting purposes, the same source of light can be used to transmit data. Unlike wi fi which uses the radio part of the electromagnetic spectrum, lifi uses the optical spectrum i. Transmission of data through light of future technology 1 pushpendra verma, 2 dr. In the present era, wi fi is the most trending domain. Operating rooms do not allow wi fi over radiation concerns, and there is also that whole lack of dedicated spectrum. Also explore the seminar topics paper on lifi technology with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year computer science engineering or cse students for the year 2015 2016. Enter li fi, another wireless communication technology which is expected to take over wi fi soon. Light fidelity li fi is a new short range optical wireless communication technology which provides the connectivity within a local network, by using lightemitting diodes leds to transmit data. Li fi is a new exemplar for photosensitive wireless technology to provide unprecedented connectivity within a localized data centric environment. An office in france is testing li fi technology for the first time by lulu chang march 19, 2018 were moving one step closer still to a future powered not by wi fi, but by li fi. Lifi short for light fidelity is wireless communication technology which utilizes light to transmit data and position between devices. In the present paper the authors will give a detailed study on li fi technology, its advantages and its future scope.
As internet users almost double every year, there is an enormous load on radio spectrum that leads to congestion. To get better bandwidth, efficiency and speed, a new technology li fi has evolved. Therefore, we are now studying wireless system concepts based on lifi technology. Application of lifi technology you might just live longer you might just live longer for a long time, med ical technology has lagged behind the rest of the wireless world. Li fi technology can be applied to many different field navigation, undersea communication and etc. Although lifi is mostly used to offload data or information from existing wi fi networks, it may. Li fi provides transmission of data through illumination by sending data. Synergies are harnessed as luminaries become lifi attocells resulting in enhanced wireless capacity providing the necessary connectivity to realise the internetofthings, and contributing to the key performance indicators for the fifth generation of cellular systems 5g and beyond. It is a lightbased communication technology that uses mostly visible light waves to deliver data, instead of radio waves as it is the case of wi fi the system works by transmitting data as light signals using led light bulbs.
Lifilight fidelity technology teerthanker mahaveer university. Limitations and challenges of lifi lifi information. Lifi technology international journal of computer science and. Image transmission using visible light communication or lifi.
Lifi technology will in future enable faster, more reliable internet connections, even when the demand for data usage has outgrown the available supply from existing technologies such as 4g, lte and wi fi. Light fidelity powerpoint presentationlifi ppt youtube. Lifi is a vlc, visible light communication technology, developed by the team of scientists including professor haas at the university of edinburg and deals with. Lifi is buzzing around the internet since past few years. The vendors and oems of lifi products are also mentioned. Lifi lightfidelity technology barjinder singh1 anita rani2 sonika3 1,2,3. Lifi stands for light fidelity which was coined by harald hass. The future technology in wireless communication 1689 figure. Revathi ganesan, 3rd year, be, ece department college.
Maybe you are familiar with wi fi in todays network world, but you may not know much about the new li fi. Li fi is a technology which is very similar to the fiber optics communication where the data is transmitted through a led at a higher intensity. This is an eightpage document provides more information on the lifixc. Madras institute of technology, anna university, chrompet. Lifi is high speed bidirectional networked and mobile communication of data. Genesis of li fi at ted global demonstration by haas, where he achieved 10 mbps transfer rate increasing it further to 123 mbps after a month, he successfully demonstrated it by blocking the light source to block the video content received by the projector. In lifi the information is transferred through light signals instead of radio waves and mostly wi fi plays an efficient role for wireless information coverage within the buildings whereas by using lifi we can provide the excel density data. Lifi has the advantage of being able to be used in sensitive areas such as in aircraft and other. This technology uses a part of the electromagnetic spectrum that is. Li fi light fidelity the future technology in wireless communication abstract whether youre using wireless internet in a coffee shop, stealing it from the guy next door, or competing for bandwidth at a conference, you have probably gotten frustrated at the slow speeds you face when more than one device is tapped into the network.
Explore lifi technology with free download of seminar report and ppt in pdf and doc format. Li fi is designed to use led light bulbs similar to those currently in use in many energyconscious homes and offices. New communication lifi technology lifi information. Abstract whether youre using wireless internet in a coffee shop, stealing it from the guy next door. Posts about introduction of lifi technology written by sknit95. An office in france is testing lifi technology for the. Light fidelity lifi technology is a wireless communication system based on the use of visible light between the violet 800 thz and red 400 thz.
595 1518 555 194 624 451 688 525 861 522 1018 725 50 1493 790 1094 349 1111 1480 617 636 841 1202 312 953 497 921 619 60 73 869 1482 128 752