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Li-Fi uses visible light communication and provides wireless internet access by transmitting data through LED light bulbs. It has several advantages over traditional Wi-Fi including much higher bandwidth, higher security since light cannot pass through walls, and availability in places where Wi-Fi signals cannot reach like airplane cabins or underground areas. Some disadvantages are that it requires line of sight and only works where there is light. Potential applications include use in hospitals where Wi-Fi can interfere with medical equipment, in vehicles to reduce accidents, and using street lamps as free wireless access points. Li-Fi aims to solve capacity and availability issues facing current wireless networks.
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Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It was invented by German physicist Harald Haas in 2011. Li-Fi provides higher speed and more secure data transmission than Wi-Fi as it does not penetrate walls and uses visible light spectrum which is in abundance. It has applications in traffic lights, airlines, petrochemical plants and underwater where radio waves cannot be used. While Li-Fi has advantages of high speed, security and availability, it also faces challenges of line of sight requirement and interference from other light sources.
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The document discusses Li-Fi technology, which uses visible light communication rather than radio waves for wireless transmission of data. It provides a brief history of Li-Fi research from the 1990s onward and describes how Li-Fi works by transmitting data through rapid flickering of LED lights that can be detected by photodetectors. Key advantages over Wi-Fi are highlighted such as higher speed, lower cost, and no health risks from radiation. Potential applications mentioned include use in hazardous environments like oil rigs and hospitals.
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of this data to the base station (BS). The protocols used for
communication among the WSN nodes and between the WSN
and the BS, must consider the resource constraints of nodes,
battery energy, computational capabilities and memory. The
WSN applications involve unattended operation of the network
over an extended period of time. In order to extend the lifetime
of a WSN, efficient routing protocols need to be adopted. The
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Similar to Li fi-130402084458-phpapp01
li-fi technology
LI-FI technology ,this latest Technology LI-FI describes transmission of “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 eye can follow.
Li-Fi Technology
With the vast growing gadgets, their usage and their developments led to the advancement in the Wi-Fi which provides a technology so called Li-Fi.Li-Fi is a technology that makes use of LED light which helps in the transmission of data much more faster and flexible than data that can be transmitted through Wi-Fi.Light reaches nearly everywhere so communication can also go along with light freely. Light Fidelity is a branch of optical wireless communication which is an emerging technology. By using visible light as transmission medium, Li-Fi provides wireless indoor communication. The bit rate achieved by Li-Fi cannot be achieved by Wi-Fi.. Dr herald Haas ,the professor of mobile communications at the university of Edinburgh school of engineering ,first time publically displayed the proof of Light Fidelity(Li-Fi) ,a method of Visible Light communication(VLC). Li-Fi is the transfer of data through light by taking fiber out of fiber optics and sending data through LED light.
Light-Fidelity [Li-Fi}
Li-Fi stands
for Light-Fidelity is transmission of data through
illumination taking the fibber out of fiber optic by
sending data through an LED light bulb
Li fi
Li-Fi uses visible light communication and provides wireless internet access by transmitting data through LED light bulbs. It has several advantages over traditional Wi-Fi including having a much larger bandwidth, higher efficiency, greater availability in places where Wi-Fi doesn't work well, and more security since light cannot pass through walls. Some potential applications of Li-Fi include use in hospitals, vehicles, traffic lights, and aircraft cabins. It provides a solution to the limited capacity of the radio spectrum and growing demand for wireless internet access.
Li fi technology
Li-Fi is a wireless communication technology that uses light from LED bulbs to transmit data. It provides higher bandwidth than Wi-Fi and has advantages like low cost, secure transmission that cannot pass through walls, and no interference with other electronic devices. Li-Fi works by varying the intensity of light from an LED lamp to encode digital data that is received by a photodetector. It has potential applications in areas where radio frequencies are regulated like hospitals, aircrafts, and undersea. While Li-Fi requires line of sight and does not work in the absence of light, it could offer an efficient alternative to radio-based wireless as more devices access the internet and airwaves become congested.
Li-Fi Technology
The document discusses the potential for using visible light communication (LiFi) as an alternative to traditional radio frequency wireless communication technologies. It notes that the 1.4 million existing cellular base stations use significant energy with low efficiency, while the radio frequency spectrum is limited and issues like availability and security exist. LiFi uses high-speed pulses of light for wireless transmission and has advantages like large available spectrum, high efficiency when combined with LED lights, availability anywhere light exists, and improved security since light does not pass through walls. While it has limitations like needing line of sight and potential external light interference, it has been proven in demonstrations and could see applications like in hospitals, traffic lights, and aircraft once costs decrease.
Li fi ppt
This document provides an overview of LiFi technology. It discusses the history of wireless networks and how they currently rely on radio waves. It then introduces LiFi as a new technology that transmits data through light instead of radio waves. It describes the components and working of LiFi, including how LED lights can be flickered at high speeds to transmit digital data. It compares LiFi to WiFi, discussing LiFi's advantages like higher speeds, more security, and greater available bandwidth. Potential applications and conclusions about LiFi solving bandwidth issues are also presented.
Li-Fi
Li-Fi is a technology that uses light from LED lights to transmit data wirelessly. It has the potential to overcome some of the issues with traditional radio wave Wi-Fi technology, including having a much larger available spectrum, being more energy efficient, working in places where radio waves don't, and having more secure transmissions that can't pass through walls. The technology works by varying the intensity of LED lights very quickly in a way imperceptible to the human eye to transmit data. It has already been demonstrated to work at speeds over 10Mbps. If widely adopted, it could transform wireless internet access by taking advantage of the billions of LED lights that already exist.
LIFI-TECHNOLOGY
LI-FI stands for “Light Fidelity”.
It is the transmission of data through illumination ,sending data through a Light Emitting Diode which varies in intensity faster than human eye can follow to deliver high speed data transmission.
Advantages of LI-FI
Higher Bandwidth (almost 10000 times more)
Availability
Efficiency
High Security
Easy to use
Fast data transfer
Harmless
Low cost
High capacity
Li fi
LI-FI is transmission of data through illumination, sending data through a LED light bulb that varies in intensity faster than human eye can follow
ppt on li-fi technology
This document summarizes a presentation on Li-Fi technology. It begins with an introduction and overview of Li-Fi, noting that it uses visible light communication and LED bulbs to transmit data. It then discusses the history of Li-Fi, including the first public demonstration in 2011. The document outlines the basic working process and construction of Li-Fi systems. It compares Li-Fi to Wi-Fi and discusses some applications. The document also briefly mentions security benefits and challenges facing Li-Fi development, such as the need for line of sight transmission. It concludes by stating that Li-Fi could provide a high-speed wireless alternative to congested radio frequencies.
مشروع التخرج LTE
Li-Fi is a new technology that uses light from LED bulbs to transmit data wirelessly. It provides very high data rates of over 500 megabytes per second in labs. Researchers are working on ways to increase data rates further, such as using arrays of LEDs transmitting different data streams simultaneously. Li-Fi has advantages over Wi-Fi such as higher speeds, more available spectrum, more secure communications, and no interference with other electronic devices. It could be used in applications like traffic lights communicating with cars, intrinsically safe environments like oil rigs, and underwater or on airplanes where radio frequencies do not work well.
graduate_project_2.docx_filename_UTF-8_graduate_20project_202 (1)
Li-Fi is a new technology that uses light from LED bulbs to transmit data wirelessly. It provides very high data rates of over 500 megabytes per second in labs. Researchers are working on ways to increase data rates further, such as using arrays of LEDs transmitting different data streams simultaneously. Li-Fi has advantages over Wi-Fi such as higher speeds, more available spectrum, more secure communications, and no interference with other devices. It could be used in applications like traffic lights communicating with cars, intrinsically safe environments, and underwater communications. Li-Fi is seen as a complement to Wi-Fi rather than a replacement, as each has advantages for different situations.
Li fi technology
The document discusses Li-Fi technology, which uses visible light communication to transmit data wirelessly. It notes that Li-Fi would use LED lamps that can both light a room and transmit information. The document outlines some limitations of radio spectrum communication and advantages of Li-Fi, including larger bandwidth, high speeds of up to 10 GBPS, and helping to overcome limitations of the crowded radio spectrum. However, it also lists some challenges of Li-Fi, such as the need for line-of-sight and inability to transmit through walls.
Lifi technology ppt
Li-Fi is a new technology that uses visible light communication and light-emitting diodes (LEDs) to transmit data wirelessly. It was introduced by physicist Harald Haas and provides data rates faster than Wi-Fi. Li-Fi uses LED light bulbs that vary in intensity faster than the human eye can detect to transmit data. It has advantages over Wi-Fi such as higher capacity, higher efficiency, greater availability, and better security since light cannot pass through walls.
3D Computing ppt.pptx
This document discusses the genesis, working principles, and advantages of LiFi technology. It explains that LiFi was introduced by physicist Harald Haas and uses visible light communication through LED bulbs to transmit data wirelessly. Compared to WiFi which uses radio waves, LiFi has benefits such as higher bandwidth through light, more efficient data transmission through LED lights, universal availability as light sources are everywhere, and better security as light does not penetrate walls.
Li-Fi
Li-Fi uses LED lights to transmit data wirelessly by switching the lights on and off very quickly. It has the potential to overcome issues with radio wave wireless technologies like limited capacity, inefficiency, limited availability in some areas, and security issues. Li-Fi provides over 10,000 times more available spectrum than radio waves and has already been demonstrated to transmit data speeds over 10Mbps. It could be used anywhere there is light and avoids issues with penetrating walls or being intercepted. Potential applications include use in places where radio waves don't work well like hospitals, traffic lights, street lights, and aircraft.
LIGHT FIDELITY TECHNOLOGY (LI FI)
Topics covered:
1. Introduction to LI-FI
2. LI-FI Construction
3. How Li-Fi Works?
4. Advantages
5. Future Scope
6. Conclusion
Li fi technology seminar-2014
this is ppt on lifi technology....describing meaning, working , construction , application , merits/demerits etc. of lifi technology.
Lifi ppt
This document provides an overview of Li-Fi technology presented by Koteshwar Rao M. It defines Li-Fi as using LED light bulbs to transmit data by varying the intensity of light faster than the human eye can detect. Li-Fi uses visible light spectrum for communication. It has advantages over Wi-Fi such as higher speed, more bandwidth, more secure connections, and energy efficiency. Potential applications of Li-Fi include use in airlines, power plants, underwater environments, and converting every light bulb into an internet hotspot. Further enhancements may enable speeds over 10Gb/s.
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Li fi-130402084458-phpapp01
- 1. LIFI
- 2. Introduction to Li- Fi Wireless communication through Light illumination
- 3. Present Wireless Communication Radio spectrum 1.4 Million base stations, 5 billion Mobile stations 600tb data every month
- 4. Wireless Communication, a utility Personal life Business life Hospitals Research and development Security
- 6. Capacity Radiowaves Cost and Expensive Less Bandwidth compared to other spectrums Insufficient spectrum for increasing data Efficiency Millions of basestations consume huge amount of energy for 1.Transmitting the radio waves 2.To cool the base station cabins 5% Efficiency
- 7. Availability Available within the range of Base stations Limited availabity Unavailable in aircrafts Security: Less secure(passes through the walls)
- 8. Is not used generally Used for hospit als Good to use But harmful to human Expensiv e, Limited Bw Less Secure Which is not used so far Safe to use Larger bandwith
- 10. How Li-Fi? Normal light power is replaced by LED light power The LED bulb will hold a micro-chip that will do the job of processing the data. The light intensity can be manipulated to send data by tiny changes in amplitude Properties of LED: (Fundamental property of LI-FI) 1.Intensity can be modulated into very high speeds and varying amplitudes 2.LED can be switched on and off with very high speed
- 11. Infrared rays in Remote control •Single data stream •20000 bits per second •Not usable for vedio streaming
- 12. LI-FI
- 13. LI-FI •Light power(LED) •Multiple data stream •High speed •Technologies used in LI-FI: SIM-OFDM and Spatial modulation
- 15. Advantages • Largers bandwidth (10,000 times the radio bandwidth) • High efficiency • More availability • Highly secure
- 16. DISADVANTAGE Presence of Light is essential
- 17. APPLICATIONS
- 18. 1.In RF restricted Environments
- 20. In vehicles and traffic lights,reducing accidents and traffic congestion
- 21. Street lamps(as free access points)
- 23. Conclusion •Overcomes the limitations of radio spectrum •High speed of 10 Gbps can be achieved •Lifi can solve the foressential problems of wireless communications these days