Therefore, we are now studying wireless system concepts based on li fi technology. The figure1 shows the environment with the li fi technology where light bulbs are used as a data communication medium to pc, laptop, tablet and pda as it all have photo detector connected to it as receiver. Worlds first transceiver i ntegrated on single chip. Lifi could offer safe, abundant connectivity for all areas of. Unlike wifi which uses the radio part of the electromagnetic spectrum, lifi uses the optical spectrum i. Transfer data within an indoor environment usually within a range of 10ms. Contents introduction to li fi history of li fi implementation of li fi how it works li fi vs wi fi application advantages limitation future developments conclusions 3. Contents abstract introduction drawbacks of before technologies different between the technologies working process applications advantages concussion. In simple terms, li fi can be thought of as a lightbased wi fi. Light fidelity powerpoint presentationlifi ppt youtube. 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 figure1 shows the environment with the lifi technology where light bulbs are used as a data communication medium to pc, laptop, tablet and pda as it all have photo detector connected to it as receiver. Current seminar topics presentation ideas 20192020. A free powerpoint ppt presentation displayed as a flash slide show on id. Light spectrum 190 nm 10,000 nm wavelength used for uplink and downlink. In simple terms, lifi can be thought of as a lightbased wifi. Download pdf documents, seminar reports, powerpoint presentations and various relevant research journals for the seminar topics. Li fi is designed to use led light bulbs similar to those currently in use in many energyconscious homes and offices. Li fi provides transmission of data through illumination by sending data. By using this technology we can exchange the information between two or more devices. The term was coined by harald haas and is a form of visible light communication and a subset of optical wireless communications owc and could be a complement to rf communication wifi or cellular network, or even a replacement in contexts of data broadcasting. And instead of wifi modems, lifi would use transceiverfitted led lamps that can light a room as well as transmit and receive information. Lifi technology wireless communication technological sister of wi fi 100 times faster than current average wi fi speeds. That is, it uses light instead of radio waves to transmit information.
Wireless optical networking technology that uses lightemitting diodes leds for data transmission. That is, the light can belong to the invisible, ultraviolet or the visible part of the spectrum. 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. Conclusion thus, if li fi technology can be put into practical use, every bulb can be used as an alternative to wi fi hotspots. This page contains gi fi technology sem inar and ppt with pdf report. Technology purelifi welcome to immersive connectivity. Jun 11, 2018 li fi stands for light fidelity and is a visible light communications vlc system which runs wireless communications that travel at very high speeds.
Proper monitoring can save huge benefits in terms of energy and economy obviously. The following lifi research projects, involving members and collaborators of the lifi research and development centre, provide research background on activity currently underway. Shuja shabbir 112206 cse4 lifi is transmission of data through illumination, sending data through a led light bulb that varies in intensity faster than. Free download new technology powerpoint presentation slides. Lifi is a wireless optical networking technology that uses lightemitting diodes leds for data transmission. The excitement surrounding lifi is because it has proven to have. The network is also referred as vpan or vlc personal area network. Unlike wifi, which uses radio waves for communication, lifi is based on visible light communication. Working process led light on one end, light sensor on the other. It seems that our initial contribution has really drawn some attention of the group of ieee 802. And instead of wifi modems, li fi would use transceiverfitted led lamps that can light a room as well as transmit and receive information.
Feb 19, 2014 li fi technology seminar reports and ppt topics. Li fi is transmission of data through illumination, ie sending data through a led light bulb that varies in intensity faster than human eye can follow li fi light fideality history. Unlike wi fi which uses the radio part of the electromagnetic spectrum, li fi uses the optical spectrum i. Lifi can transmit at multiple gigabits, is more reliable, virtually interference free and uniquely more secure than radio technology such as wifi or cellular. Light fidelity li fi technology is a wireless communication system based on the use of visible light between the violet 800 thz and red 400 thz. Li fi light fidelity the future technology in wireless communication published on november 30, 2015 november 30, 2015 20 likes 0 comments. Wifi has been developed for mobile computing devices, such has laptops, but it is now. Radio frequency technology such as wifi is vulnerable to interference from a wide range of devices such as cordless phones, microwaves and neighbouring wifi networks. Lifi technology is based on leds for the transfer of data.
The future technology in wireless communication 1691 interconnected data systems to monitor things like demand, grid integrity and core temperature. Li fi is designed to use led light bulbs similar slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Working technology li fi is implemented using white led light bulbs which. Real time usage of li fi comparison between various technologies how it is different. However, li fi bulbs are outfitted with a chip that modulates the light imperceptibly for. Recently used in some western countries, we hope to be deployed in arab world. Li fi is a derivative of optical wireless communications owc technology, which uses light from lightemitting diodes leds as a medium to deliver network, mobile, highspeed communication in a similar manner to wi fi. Therefore, we are now studying wireless system concepts based on lifi technology. Professor harald haas, from the university of edinburgh in the uk, is widely recognised as the original founder of li fi.
It provides simple, faster and efficient wireless data communication. Visible light part of the electromagnetic spectrum. Ppt lifi technology powerpoint presentation, free download id. Li fi will make us to proceed towards the cleaner, greener, safer and brighter future.
Technology and standardization gaps for wifi sensing. He coined the term li fi and is chair of mobile communications at the university of edinburgh and co founder of purelifi. Lifi is a subset of optical wireless communication owc and can be a complement to rf communication wifi or cellular network, or a replacement in contexts of data broadcasting. The technology is very new and was proposed by the german physicist harald haas in 2011. Posts about introduction of li fi technology written by sknit95. Lifi signals can be defined by the area of illumination, which means interference is much simpler to avoid and even stop altogether. Conclusion overcoming the four issues with radio waves in lifi efficiency capacity 0 times more spectrum than radio waves. Light fidelity lifi is a bidirectional, high speed and fully networked wireless communication technology similar to wifi. Abstract introduction drawbacks of before technologies different between the technologies working process applications advantages concussion. Li fi, basically known as light fidelity or 5g visible light communication systems, can be said to be the optimized version of wi fi in modern times. Ppt lifi technology powerpoint presentation, free download. Working technology lifi is implemented using white led light bulbs which. Apr 03, 2015 descripton about lifi when compared with wifi.
Enter lifi, another wireless communication technology which is expected to take over wifi soon. Li fi light fidelity the future technology in wireless. Light fidelity, lifi, is a relatively new form of wireless communication technology. Lifi can transmit at multiple gigabits, is more reliable, virtually interference free and uniquely more secure than radio technology such as wi fi or cellular. History the technology truly began during the 1990s in countries like germany, korea, and japan where they discovered leds could be retrofitted to send. Conclusion overcoming the four issues with radio waves in li fi efficiency capacity 0 times more spectrum than radio waves. This website provides the latest technical seminar topics for engineering students, interesting presentation topics and speech ideas for school and college students. This new technology is known as li ght fidelity lifi. Upvlc is an ambitious project, funded through an epsrc programme grant, which will explore the. 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.
Li fi technology ppt wi fi telecommunications free. Li fi is a subset of optical wireless communication owc and can be a complement to rf communication wi fi or cellular network, or a replacement in contexts of data broadcasting. Lifi is the abbreviation of light fidelity and was expressed by harald hass who was a german physicist. 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. Lifi technology seminar report and ppt for cse students. In the engineering section, you will get the latest. Li fi is a wireless optical networking technology that uses lightemitting diodes leds for data transmission. Contents introduction to lifi history of lifi implementation of lifi how it works lifi vs wifi application advantages limitation future developments conclusions 3. Data through illumination and thus data transmission. Maybe you are familiar with wifi in todays network world, but you may not know much about the new lifi.
Haralld haas university of edinburgh, germany 20032011. Application of li fi 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. Lifi will make us to proceed towards the cleaner, greener, safer and brighter future. Lifi technology ppt seminar presentation seminar topics.
Harald haas during his ted global talk, is bidirectional, high speed and fully networked wireless communications similar to wifi. Abstract introduction drawbacks of before technologies different between the technologies. Feb 10, 2014 the uploader spent hisher valuable time to create this new technology powerpoint presentation slides, to share hisher useful content with the world. 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. Lifi is designed to use led light bulbs similar to those currently in use in many energyconscious homes and offices. Lifi is transmission of data through illumination,sending data through a led light bulb that varies in intensity faster than human eye can follow. Seminar on lifi technology ppt video online download. We investigate lifi in the context of novel 5g technologies to solve the looming spectrum crisis in wireless communications.
Lifi is a wireless technology holds the key to solving challenges faced by 5g. Lighting the future of wireless networks sitepoint. Vlc is a oneway, pointtopoint optical communications technology while lifi enables twoway communications over multiple frequencies for. Harald haas during his ted global talk, is bidirectional, high speed and fully networked wireless communications similar to wi fi. Operating rooms do not allow wifi over radiation concerns, and there is also that whole lack of. In general,li fi works even under water thereby causing a great benefit to the military operations. With li fi, your light blub is essentially your router. We investigate li fi in the context of novel 5g technologies to solve the looming spectrum crisis in wireless communications. 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.
And instead of wi fi modems, lifi would use transceiverfitted led lamps that can light a room as well as transmit and receive information. Transmission speeds of up to 10 gbps have been demonstrated in our lab and it has also been shown that li fi does not required lineofsight. Used as a medium to deliver networked, mobile, highspeed communication in a similar manner as wi fi. Download predesigned themes for powerpoint presentations with attractive and original background designs for presentations on technology. Lifi provides transmission of data through illumination by sending data. Wifi wireless technology working principles, types and. It works on the principle of visible light communication i. May 22, 2015 operates on 60ghz on the cmos process. However, lifi bulbs are outfitted with a chip that modulates the light imperceptibly for optical data transmission. The transfer of the data can be with the help of all kinds of light, no matter the part of the spectrum that they belong.
Free seminar reports, ppt presentation topics and abstract. Aug 14, 2017 this powerpoint presentation is on light fidelity. Microsoft powerpoint, slide presentation software, ppt. Lifi technology powerpoint ppt presentations powershow. Hamdard institute of engineering sciences technology.
Lifi is a technology that uses the light emitting diodes led to transmit the data wirelessly. Allows wireless transfer of audio and video data at upto 5gb per second. 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. Ppt lifi powerpoint presentation free to download id. And instead of wi fi modems, li fi would use transceiverfitted led lamps that can light a room as well as transmit and receive information. Used as a medium to deliver networked, mobile, highspeed communication in a similar manner as wifi. Conclusion thus, if lifi technology can be put into practical use, every bulb can be used as an alternative to wifi hotspots. This is a presentation about lifi technology type of vlc communication researched by dr. Haas promoted this technology in his 2011 ted global talk and helped start a company to market it.
Technology uses the visible spectrum the term was first used by harald haas in his ted global talk on visible light communication in 2011. Lifi is a derivative of optical wireless communications owc technology, which uses light from lightemitting diodes leds as a medium to deliver network, mobile, highspeed communication in a similar manner to wifi. Previous versions include powerpoint 2016, powerpoint 20, powerpoint 2010, powerpoint 2007, and powerpoint 2003. Video and computer games have made a large impact upon. It is a short range wi reless communica tion system based on light illumination from led, and use the visible light as a signal c. Li fi technology ppt wi fi telecommunications free 30. Nov 30, 2015 li fi light fidelity the future technology in wireless communication published on november 30, 2015 november 30, 2015 20 likes 0 comments. Operating rooms do not allow wi fi over radiation concerns, and there is also that whole lack of dedicated spectrum.
So we have the infrastructure available and already installed. Lifis competitive advantage the capabilities of lifi are more advanced than visual light communication vlc and wifi. Microsoft powerpoint with a microsoft 365 subscription is the latest version of powerpoint. It uses common household led light bulbs to enable data transfer, boasting speeds of up to 224 gigabits per second. In this technology, light is passed through transmission channel as it is the fastest medium. The uploader spent hisher valuable time to create this new technology powerpoint presentation slides, to share hisher useful content with the world.
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