LIFI technolgy
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This document provides an overview of Li-Fi technology. It begins with definitions of Li-Fi and discusses its history, starting with Professor Harald Haas demonstrating data transmission through an LED light bulb in 2011. It then covers the current congestion of the radio spectrum, issues with radio usage, and how Li-Fi could help resolve these issues. The document explains the principles and working of Li-Fi, why it uses visible light communication, and compares it to Wi-Fi. It lists applications such as in traffic and homes. Finally, it discusses the merits and demerits of Li-Fi and concludes by envisioning future developments using arrays of micron-sized LEDs.
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Li-Fi Technology presentation
Li-Fi is a technology that uses light from LED bulbs to transmit data wirelessly. It provides several advantages over traditional Wi-Fi including very high speeds, low energy consumption, secure transmission that cannot pass through walls, and the ability to be used in places where radio waves cannot reach. The technology works by switching the state of LED bulbs on and off very quickly in order to transmit binary code. It is still an emerging technology but has already been demonstrated to work at speeds over 10Mbps. Potential applications include use in street lights, hospitals, airplanes, and underwater.
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.
pureLiFi
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It can provide higher speeds than Wi-Fi and has a number of advantages including increased capacity, energy efficiency, and enhanced security compared to traditional radio-frequency wireless networks. Li-Fi is a subset of visible light communication (VLC) and works by modulating the intensity of light from an LED to transmit data to a photodetector. This allows bidirectional communication in a similar manner to Wi-Fi networks.
Li fi(led transmission of data) presentation
LIFI –”LIGHT FIDEALITY” is transmission of data through illumination, i.e. sending data through a LED light bulb that varies in intensity faster than human eye can follow. Li-Fi is a light based Wi-Fi it uses light instead of radio waves to transmit information.
HISTORY - The technology truly began during the year 1990’s in countries like Germany , Korea and Japan where they discovered LED’s could be retrofitted to send information . Prof. Harald Hass from university of Edinburgh. continues to wow the world with the potential to use light for communication He demonstrated in year 2012.
5. IMPLEMENTATION OF LI-FI The LI-FI product consists of three primary sub assemblies A. Emitter B. RF Driver C. Power Supply
6. FUNCTION OF BULB ASSEMBLY - At the heart of LI-FI is the bulb sub assembly where a sealed bulb is embedded in a dielectric material The dielectric material serves two purposes A. Wave guide B. Electric field
7. RF DRIVER - Power amplifier (PA) assembly that uses an LDMOS device. Converts electrical energy into RF power. The PA is designed to ruggedness and efficiency. The RF driver also contains controls circuit for digital and analog lighting controls.
8. HOW LI-FI WORKS- Operational procedure is very simple, if the LED is on, you transmit a digit 1, if its off you transmit a digit 0. the LED’s can be switched on and off quickly, which gives nice opportunities for transmitting data. hence all that us required is some LEDS and a controller that code data into those LEDs. We have to just vary the rate at which the LEDs flicker depending upon the data we want to encode. Thus every light source will work as a hub for data transmission. IMPLEMENTATION OF LI-FI The LI-FI product consists of three primary sub assemblies A. Emitter B. RF Driver C. Power Supply
6. FUNCTION OF BULB ASSEMBLY - At the heart of LI-FI is the bulb sub assembly where a sealed bulb is embedded in a dielectric material The dielectric material serves two purposes A. Wave guide B. Electric field
7. RF DRIVER - Power amplifier (PA) assembly that uses an LDMOS device. Converts electrical energy into RF power. The PA is designed to ruggedness and efficiency. The RF driver also contains controls circuit for digital and analog lighting controls.
8. HOW LI-FI WORKS- Operational procedure is very simple, if the LED is on, you transmit a digit 1, if its off you transmit a digit 0. the LED’s can be switched on and off quickly, which gives nice opportunities for transmitting data. hence all that us required is some LEDS and a controller that code data into those LEDs. We have to just vary the rate at which the LEDs flicker depending upon the data we want to encode. Thus every light source will work as a hub for data transmission
Li fi technology
This document provides an introduction and overview of Li-Fi technology. It begins with a brief history of networking technologies including wired networks, wireless networks like Wi-Fi, and the more recent introduction of Li-Fi by Dr. Harald Haas in 2011. It then discusses some issues with current radio-based wireless communication technologies like limited availability and bandwidth. Li-Fi is introduced as a new wireless communication technology that uses visible light communication and LED bulbs to transmit data at speeds over 10Gbps. The key components and workings of Li-Fi are explained along with advantages over traditional wireless networks like larger bandwidth, security, and energy efficiency. The document concludes that Li-Fi has promising applications and possibilities if developed further.
Li fi Technology
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It is a faster and more secure alternative to Wi-Fi networks. Li-Fi works by transmitting data through LED light bulbs and receiving data through photodetectors. At its core, Li-Fi uses visible light communication (VLC) technology which utilizes part of the optical spectrum that is not used for illumination for high-speed data communication. Li-Fi has several advantages over Wi-Fi such as higher speed, more secure communication, and the ability to work in places where radio waves are not allowed or may interfere with sensitive equipment. However, Li-Fi also faces challenges as it requires line
Li fi ppt
Li-Fi is a visible light communication system that uses LED light bulbs to transmit data wirelessly. It was coined by Professor Harald Haas in 2011 and provides high-speed communication similar to Wi-Fi but using light instead of radio waves. Li-Fi has several applications such as in traffic lights, airplanes, hospitals, and street lamps. It provides more secure and faster communication than Wi-Fi but has limitations like the need for line of sight and interference from other light sources. Current companies developing Li-Fi technology include pureLIFI and LIFI-X.
lifi presentation
Hey guys this ppt is all about lifi presentation.
you can refer this presentation as your project .
this is our final presentation.
Recommended
Li-Fi Technology presentation
Li-Fi is a technology that uses light from LED bulbs to transmit data wirelessly. It provides several advantages over traditional Wi-Fi including very high speeds, low energy consumption, secure transmission that cannot pass through walls, and the ability to be used in places where radio waves cannot reach. The technology works by switching the state of LED bulbs on and off very quickly in order to transmit binary code. It is still an emerging technology but has already been demonstrated to work at speeds over 10Mbps. Potential applications include use in street lights, hospitals, airplanes, and underwater.
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.
pureLiFi
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It can provide higher speeds than Wi-Fi and has a number of advantages including increased capacity, energy efficiency, and enhanced security compared to traditional radio-frequency wireless networks. Li-Fi is a subset of visible light communication (VLC) and works by modulating the intensity of light from an LED to transmit data to a photodetector. This allows bidirectional communication in a similar manner to Wi-Fi networks.
Li fi(led transmission of data) presentation
LIFI –”LIGHT FIDEALITY” is transmission of data through illumination, i.e. sending data through a LED light bulb that varies in intensity faster than human eye can follow. Li-Fi is a light based Wi-Fi it uses light instead of radio waves to transmit information.
HISTORY - The technology truly began during the year 1990’s in countries like Germany , Korea and Japan where they discovered LED’s could be retrofitted to send information . Prof. Harald Hass from university of Edinburgh. continues to wow the world with the potential to use light for communication He demonstrated in year 2012.
5. IMPLEMENTATION OF LI-FI The LI-FI product consists of three primary sub assemblies A. Emitter B. RF Driver C. Power Supply
6. FUNCTION OF BULB ASSEMBLY - At the heart of LI-FI is the bulb sub assembly where a sealed bulb is embedded in a dielectric material The dielectric material serves two purposes A. Wave guide B. Electric field
7. RF DRIVER - Power amplifier (PA) assembly that uses an LDMOS device. Converts electrical energy into RF power. The PA is designed to ruggedness and efficiency. The RF driver also contains controls circuit for digital and analog lighting controls.
8. HOW LI-FI WORKS- Operational procedure is very simple, if the LED is on, you transmit a digit 1, if its off you transmit a digit 0. the LED’s can be switched on and off quickly, which gives nice opportunities for transmitting data. hence all that us required is some LEDS and a controller that code data into those LEDs. We have to just vary the rate at which the LEDs flicker depending upon the data we want to encode. Thus every light source will work as a hub for data transmission. IMPLEMENTATION OF LI-FI The LI-FI product consists of three primary sub assemblies A. Emitter B. RF Driver C. Power Supply
6. FUNCTION OF BULB ASSEMBLY - At the heart of LI-FI is the bulb sub assembly where a sealed bulb is embedded in a dielectric material The dielectric material serves two purposes A. Wave guide B. Electric field
7. RF DRIVER - Power amplifier (PA) assembly that uses an LDMOS device. Converts electrical energy into RF power. The PA is designed to ruggedness and efficiency. The RF driver also contains controls circuit for digital and analog lighting controls.
8. HOW LI-FI WORKS- Operational procedure is very simple, if the LED is on, you transmit a digit 1, if its off you transmit a digit 0. the LED’s can be switched on and off quickly, which gives nice opportunities for transmitting data. hence all that us required is some LEDS and a controller that code data into those LEDs. We have to just vary the rate at which the LEDs flicker depending upon the data we want to encode. Thus every light source will work as a hub for data transmission
Li fi technology
This document provides an introduction and overview of Li-Fi technology. It begins with a brief history of networking technologies including wired networks, wireless networks like Wi-Fi, and the more recent introduction of Li-Fi by Dr. Harald Haas in 2011. It then discusses some issues with current radio-based wireless communication technologies like limited availability and bandwidth. Li-Fi is introduced as a new wireless communication technology that uses visible light communication and LED bulbs to transmit data at speeds over 10Gbps. The key components and workings of Li-Fi are explained along with advantages over traditional wireless networks like larger bandwidth, security, and energy efficiency. The document concludes that Li-Fi has promising applications and possibilities if developed further.
Li fi Technology
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It is a faster and more secure alternative to Wi-Fi networks. Li-Fi works by transmitting data through LED light bulbs and receiving data through photodetectors. At its core, Li-Fi uses visible light communication (VLC) technology which utilizes part of the optical spectrum that is not used for illumination for high-speed data communication. Li-Fi has several advantages over Wi-Fi such as higher speed, more secure communication, and the ability to work in places where radio waves are not allowed or may interfere with sensitive equipment. However, Li-Fi also faces challenges as it requires line
Li fi ppt
Li-Fi is a visible light communication system that uses LED light bulbs to transmit data wirelessly. It was coined by Professor Harald Haas in 2011 and provides high-speed communication similar to Wi-Fi but using light instead of radio waves. Li-Fi has several applications such as in traffic lights, airplanes, hospitals, and street lamps. It provides more secure and faster communication than Wi-Fi but has limitations like the need for line of sight and interference from other light sources. Current companies developing Li-Fi technology include pureLIFI and LIFI-X.
lifi presentation
Hey guys this ppt is all about lifi presentation.
you can refer this presentation as your project .
this is our final presentation.
Lifi technology(nimesh bariya)
This document discusses LiFi technology, which transmits data through illumination using LED light bulbs. It was invented in 2012 by German physicist Harald Hass. LiFi works by switching LED lights on and off very quickly to transmit digital 1s and 0s. It provides wireless connectivity at speeds up to 1Gbps, faster than WiFi. Potential applications of LiFi include use in traffic lights, airplanes, and underwater communications since it does not interfere with radio frequencies. While it has advantages over WiFi like higher speeds and bandwidth, LiFi also has limitations such as requiring line of sight and being disrupted by external light sources.
Li-Fi seminar report
The document provides an introduction and summary of a student's seminar report on Li-Fi technology. It begins by thanking the seminar guide and department head for their guidance and for providing the opportunity to present the seminar. It then provides an index of the report sections, which include an abstract on Li-Fi technology, introductions to Li-Fi and how it works, comparisons to Wi-Fi, applications, and conclusions.
Light Fidelity ( Li-Fi ) Seminar Report
Light Fidelity or Li-Fi is the optical communication technology using Visible Light Spectrum, the future of wireless technology.
ppt on LIFI TECHNOLOGY
This document discusses Li-Fi technology, which uses LED light bulbs to transmit data by varying the intensity of light faster than what the human eye can detect. Li-Fi was pioneered in the 1990s and demonstrated by Harald Haas in 2011. It provides several advantages over Wi-Fi such as higher speed potential and no interference with radio frequencies. Li-Fi works by encoding binary data in the on-off states of an LED and can achieve speeds of over 100 Mbps. Potential applications include use in planes, hospitals, and as public internet hotspots through street lamps. However, challenges include light not passing through solid objects and interference from other light sources.
LIFI TECHNOLOGY
This document presents an overview of Li-Fi technology. Li-Fi uses light from LED bulbs to transmit data wirelessly, providing higher bandwidth than Wi-Fi. It was pioneered in the 1990s but is now gaining attention due to wireless spectrum congestion issues. Li-Fi has several advantages over Wi-Fi like better security, higher speed, and no interference. Potential applications include use in traffic lights, hospitals, airplanes, and underwater. However, challenges remain in ensuring line of sight and preventing interference from other light sources.
Li fi technology(awesome slides )
The document presents on Li-Fi technology. It discusses that Li-Fi uses LED lights to transmit data wirelessly similar to Wi-Fi. The history of wireless technology and Li-Fi is explained, including its invention in 2011. Current applications of Li-Fi are in traffic lights, hospitals and airplanes where radiowaves are restricted. Challenges of Li-Fi include interference from other light sources and difficulty transmitting signals through opaque objects. The conclusion is that if developed further, Li-Fi could provide wireless internet access from any light source.
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
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.
Li fi technology ppt
The document discusses Li-Fi technology, which uses LED light bulbs to transmit data via visible light communication. It explains how Li-Fi works and its real-time usage. Li-Fi provides higher data transmission rates than Wi-Fi and uses the visible light spectrum, which has more available bandwidth. It also offers advantages like privacy, security and low implementation costs compared to Wi-Fi. Some challenges of Li-Fi include its inability to pass through opaque objects and potential interference from other light sources. The document concludes that if widely adopted, Li-Fi could create a cleaner, greener and brighter future with every light bulb acting as an internet hotspot.
Li-Fi Technology PPT
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission.Li-Fi is designed to use LED light bulbs similar to those currently in use in many energy-conscious homes and offices.
LI-FI
This document discusses Li-Fi technology, which uses visible light communication to transmit data wirelessly. It was invented by Harald Haas and is based on LED lighting that varies in intensity faster than the human eye can detect to encode data. Key features include using all types of light for transmission and incredibly high internet speeds. Issues with radio spectrum include limited capacity and availability as well as low efficiency and security. Potential applications of Li-Fi include use in medical devices, factories, aircraft, and street lights. Advantages are speeds over 10Gbps and cost efficiency, while disadvantages are needing line of sight and lower efficiency with non-LED lights. In conclusion, Li-Fi offers a promising alternative to radio-based wireless as demand
Seminar Report on Li-Fi Technology
This document provides an overview of Li-Fi technology. It begins with an abstract describing the genesis of Li-Fi by Dr. Harald Haas and how it works by transmitting data through light intensity variations too fast for the human eye to detect. Section 2 introduces Li-Fi and how it uses LED bulbs to transmit digital 1s and 0s. Section 3 discusses the development of Li-Fi by Dr. Haas in 2011. Section 4 explains how Li-Fi works by modulating LED light and can achieve speeds over 500 megabytes per second. Section 5 compares Li-Fi to Wi-Fi, noting Li-Fi uses light instead of radio waves. Section 6 outlines several application areas of Li-Fi such as
Li-fi Technology || World's fastest Internet Speed
Li-Fi is a wireless communication technology that uses visible light communication to transmit data using LED lights. It provides higher speeds than Wi-Fi and does not suffer from bandwidth limitations of radio frequencies. Li-Fi works by switching LED lights on and off very fast to transmit digital signals, and photo detectors translate the signals back into data. Potential applications of Li-Fi include use in confined areas like airplanes, hospitals, and traffic lights communicating with cars. Challenges include the need for line of sight and interference from other light sources.
Li-fi technology
Li-Fi is a new technology that uses visible light communication (VLC) to transmit data through LED light bulbs. It works by varying the intensity of light faster than what the human eye can detect. Li-Fi offers several advantages over traditional Wi-Fi, including higher capacity, better availability, higher security, and energy efficiency. It could help meet the rapidly increasing demand for wireless data as radio spectrum becomes more congested. If developed further, Li-Fi technology would allow wireless internet access from every light bulb.
Li-Fi Technology
This document summarizes a seminar on LiFi technology presented by students at Meghnad Saha Institute of Technology under a professor. It introduces LiFi as using visible light communication instead of radio waves for wireless internet. The seminar covers the history of LiFi invention, issues with radio spectrum capacity, the working mechanism of transmitting data through light, applications like using streetlights and traffic lights for internet access, advantages like high security and speed, and limitations like needing line of sight.
Lifi technology
Li-Fi is a visible light communication system that uses light from LED lights to deliver high-speed wireless communication, similar to Wi-Fi. It was coined in 2011 by Professor Harald Haas. Data is transmitted by switching the LEDs on and off very quickly in a binary code. The main components are a high brightness white LED to transmit and a silicon photodiode to receive. Li-Fi provides advantages over radio-based networks like higher speed, greater capacity, and more security. Potential applications include use in vehicles, aircraft, hospitals and traffic lights.
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.
lifi light fedility
LiFi is cellular wireless networking (re)using lights. Specifically, light emitting diodes (LEDs) are used in LiFi as visible light transmitters.
DATA TRANSMISSION THROUGH ILLUMINATION
Li-Fi is a new wireless technology which provides the connectivity within localized network environment. The main principle of this technology is we can transmit the data using light illumination by using light emitting diodes where radio frequency is media in Wi-Fi and LED bulb light intensity is faster than human eye can follow. One germen phycist-Prof Harald Haas an expert in optical wireless communications at the University of Edinburgh, he demonstrated how an LED bulb equipped with signal processing technology could stream a high-definition video to a computer. By using this technology a 1 watt LED light bulb would be enough to provide net connectivity to four computers. This technology termed as "light fidelity". This technology allows us to transfer data more securely with higher data rates. This technology is still under research and further exploitation could lead to wide applications.
Li-Fi Technology (Perfect slides)
This document provides an overview of Li-Fi technology through a presentation on the topic. It discusses the history of Li-Fi, how it works by transmitting data through LED light, its advantages over Wi-Fi such as higher bandwidth and more secure communication through visible light. Example applications are given such as using traffic lights and street lamps to transmit data. Challenges for Li-Fi are also noted, such as the need for line of sight transmission and potential interference from other light sources.
Li-Fi technology
Li-Fi is the term some have used to label the fast and cheap wireless-communication system, which is the optical version of Wi-Fi. The term was first used in this context by Harald Haas in his TED Global talk on Visible Light Communication(VLC). The technology was demonstrated at the 2012 Consumer Electronics Show in Las Vegas using a pair of Casio smartphones to exchange data using light of varying intensity given off from their screens, detectable at a distance of up to ten meters. For more recent trends in electronics please visit radeshyamece.blogspot.com
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Lifi technology(nimesh bariya)
This document discusses LiFi technology, which transmits data through illumination using LED light bulbs. It was invented in 2012 by German physicist Harald Hass. LiFi works by switching LED lights on and off very quickly to transmit digital 1s and 0s. It provides wireless connectivity at speeds up to 1Gbps, faster than WiFi. Potential applications of LiFi include use in traffic lights, airplanes, and underwater communications since it does not interfere with radio frequencies. While it has advantages over WiFi like higher speeds and bandwidth, LiFi also has limitations such as requiring line of sight and being disrupted by external light sources.
Li-Fi seminar report
The document provides an introduction and summary of a student's seminar report on Li-Fi technology. It begins by thanking the seminar guide and department head for their guidance and for providing the opportunity to present the seminar. It then provides an index of the report sections, which include an abstract on Li-Fi technology, introductions to Li-Fi and how it works, comparisons to Wi-Fi, applications, and conclusions.
Light Fidelity ( Li-Fi ) Seminar Report
Light Fidelity or Li-Fi is the optical communication technology using Visible Light Spectrum, the future of wireless technology.
ppt on LIFI TECHNOLOGY
This document discusses Li-Fi technology, which uses LED light bulbs to transmit data by varying the intensity of light faster than what the human eye can detect. Li-Fi was pioneered in the 1990s and demonstrated by Harald Haas in 2011. It provides several advantages over Wi-Fi such as higher speed potential and no interference with radio frequencies. Li-Fi works by encoding binary data in the on-off states of an LED and can achieve speeds of over 100 Mbps. Potential applications include use in planes, hospitals, and as public internet hotspots through street lamps. However, challenges include light not passing through solid objects and interference from other light sources.
LIFI TECHNOLOGY
This document presents an overview of Li-Fi technology. Li-Fi uses light from LED bulbs to transmit data wirelessly, providing higher bandwidth than Wi-Fi. It was pioneered in the 1990s but is now gaining attention due to wireless spectrum congestion issues. Li-Fi has several advantages over Wi-Fi like better security, higher speed, and no interference. Potential applications include use in traffic lights, hospitals, airplanes, and underwater. However, challenges remain in ensuring line of sight and preventing interference from other light sources.
Li fi technology(awesome slides )
The document presents on Li-Fi technology. It discusses that Li-Fi uses LED lights to transmit data wirelessly similar to Wi-Fi. The history of wireless technology and Li-Fi is explained, including its invention in 2011. Current applications of Li-Fi are in traffic lights, hospitals and airplanes where radiowaves are restricted. Challenges of Li-Fi include interference from other light sources and difficulty transmitting signals through opaque objects. The conclusion is that if developed further, Li-Fi could provide wireless internet access from any light source.
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
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.
Li fi technology ppt
The document discusses Li-Fi technology, which uses LED light bulbs to transmit data via visible light communication. It explains how Li-Fi works and its real-time usage. Li-Fi provides higher data transmission rates than Wi-Fi and uses the visible light spectrum, which has more available bandwidth. It also offers advantages like privacy, security and low implementation costs compared to Wi-Fi. Some challenges of Li-Fi include its inability to pass through opaque objects and potential interference from other light sources. The document concludes that if widely adopted, Li-Fi could create a cleaner, greener and brighter future with every light bulb acting as an internet hotspot.
Li-Fi Technology PPT
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission.Li-Fi is designed to use LED light bulbs similar to those currently in use in many energy-conscious homes and offices.
LI-FI
This document discusses Li-Fi technology, which uses visible light communication to transmit data wirelessly. It was invented by Harald Haas and is based on LED lighting that varies in intensity faster than the human eye can detect to encode data. Key features include using all types of light for transmission and incredibly high internet speeds. Issues with radio spectrum include limited capacity and availability as well as low efficiency and security. Potential applications of Li-Fi include use in medical devices, factories, aircraft, and street lights. Advantages are speeds over 10Gbps and cost efficiency, while disadvantages are needing line of sight and lower efficiency with non-LED lights. In conclusion, Li-Fi offers a promising alternative to radio-based wireless as demand
Seminar Report on Li-Fi Technology
This document provides an overview of Li-Fi technology. It begins with an abstract describing the genesis of Li-Fi by Dr. Harald Haas and how it works by transmitting data through light intensity variations too fast for the human eye to detect. Section 2 introduces Li-Fi and how it uses LED bulbs to transmit digital 1s and 0s. Section 3 discusses the development of Li-Fi by Dr. Haas in 2011. Section 4 explains how Li-Fi works by modulating LED light and can achieve speeds over 500 megabytes per second. Section 5 compares Li-Fi to Wi-Fi, noting Li-Fi uses light instead of radio waves. Section 6 outlines several application areas of Li-Fi such as
Li-fi Technology || World's fastest Internet Speed
Li-Fi is a wireless communication technology that uses visible light communication to transmit data using LED lights. It provides higher speeds than Wi-Fi and does not suffer from bandwidth limitations of radio frequencies. Li-Fi works by switching LED lights on and off very fast to transmit digital signals, and photo detectors translate the signals back into data. Potential applications of Li-Fi include use in confined areas like airplanes, hospitals, and traffic lights communicating with cars. Challenges include the need for line of sight and interference from other light sources.
Li-fi technology
Li-Fi is a new technology that uses visible light communication (VLC) to transmit data through LED light bulbs. It works by varying the intensity of light faster than what the human eye can detect. Li-Fi offers several advantages over traditional Wi-Fi, including higher capacity, better availability, higher security, and energy efficiency. It could help meet the rapidly increasing demand for wireless data as radio spectrum becomes more congested. If developed further, Li-Fi technology would allow wireless internet access from every light bulb.
Li-Fi Technology
This document summarizes a seminar on LiFi technology presented by students at Meghnad Saha Institute of Technology under a professor. It introduces LiFi as using visible light communication instead of radio waves for wireless internet. The seminar covers the history of LiFi invention, issues with radio spectrum capacity, the working mechanism of transmitting data through light, applications like using streetlights and traffic lights for internet access, advantages like high security and speed, and limitations like needing line of sight.
Lifi technology
Li-Fi is a visible light communication system that uses light from LED lights to deliver high-speed wireless communication, similar to Wi-Fi. It was coined in 2011 by Professor Harald Haas. Data is transmitted by switching the LEDs on and off very quickly in a binary code. The main components are a high brightness white LED to transmit and a silicon photodiode to receive. Li-Fi provides advantages over radio-based networks like higher speed, greater capacity, and more security. Potential applications include use in vehicles, aircraft, hospitals and traffic lights.
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.
lifi light fedility
LiFi is cellular wireless networking (re)using lights. Specifically, light emitting diodes (LEDs) are used in LiFi as visible light transmitters.
DATA TRANSMISSION THROUGH ILLUMINATION
Li-Fi is a new wireless technology which provides the connectivity within localized network environment. The main principle of this technology is we can transmit the data using light illumination by using light emitting diodes where radio frequency is media in Wi-Fi and LED bulb light intensity is faster than human eye can follow. One germen phycist-Prof Harald Haas an expert in optical wireless communications at the University of Edinburgh, he demonstrated how an LED bulb equipped with signal processing technology could stream a high-definition video to a computer. By using this technology a 1 watt LED light bulb would be enough to provide net connectivity to four computers. This technology termed as "light fidelity". This technology allows us to transfer data more securely with higher data rates. This technology is still under research and further exploitation could lead to wide applications.
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Li-fi Technology || World's fastest Internet Speed
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Li-Fi Technology (Perfect slides)
This document provides an overview of Li-Fi technology through a presentation on the topic. It discusses the history of Li-Fi, how it works by transmitting data through LED light, its advantages over Wi-Fi such as higher bandwidth and more secure communication through visible light. Example applications are given such as using traffic lights and street lamps to transmit data. Challenges for Li-Fi are also noted, such as the need for line of sight transmission and potential interference from other light sources.
Li-Fi technology
Li-Fi is the term some have used to label the fast and cheap wireless-communication system, which is the optical version of Wi-Fi. The term was first used in this context by Harald Haas in his TED Global talk on Visible Light Communication(VLC). The technology was demonstrated at the 2012 Consumer Electronics Show in Las Vegas using a pair of Casio smartphones to exchange data using light of varying intensity given off from their screens, detectable at a distance of up to ten meters. For more recent trends in electronics please visit radeshyamece.blogspot.com
Li-Fi technology
LI-FI is a technology that transmits data through illumination by varying the intensity of LED lights faster than the human eye can detect. It was developed in the 1990s but continues to be improved upon. LI-FI provides higher bandwidth than Wi-Fi and could help address issues with insufficient radio spectrum capacity as data demands increase. It works by transmitting a digital 1 or 0 by turning an LED on or off very quickly. Compared to other wavelengths, visible light is best for transmitting data safely. Potential applications of LI-FI include vehicle-to-vehicle communication to prevent accidents, use in intrinsically safe environments like planes or oil rigs, and creating public internet access points using streetlights. However, LI-FI requires the
Li fi
1) Li-Fi is a VLC technology developed by a team including Dr. Gordon Povey, Prof. Harald Haas, and Dr. Mostafa Afgani at the University of Edinburgh that uses LED lights to transmit data through illumination by varying the intensity faster than the human eye can detect.
2) It was first coined by Prof. Harald Haas in 2011 and allows wireless communication without radio waves, which can be dangerous in some environments like oil platforms.
3) Li-Fi works by using a microchip in an LED bulb to encode data by switching the LED on and off very fast to transmit 1s and 0s, which is received by a light sensitive detector and converted
Li fi
Li-Fi uses visible light communication and LED bulbs to transmit data wirelessly. It is a newer technology than Wi-Fi that provides higher speeds and more secure transmission since light cannot pass through opaque objects. Li-Fi works by switching LED bulbs on and off very fast to transmit digital signals, with photo detectors at the receiving end that translate light pulses into electronic signals. While Li-Fi has advantages over Wi-Fi like higher speeds and no radio interference, Wi-Fi currently has wider range and can be used outdoors. Li-Fi is expected to complement and eventually replace Wi-Fi for wireless internet access.
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Lifi final
LIFI (Light Fidelity) is a technology that uses visible light communication and infrared light to transmit data using LED light bulbs. It provides wireless communication that is similar to WiFi but uses the light spectrum instead of radio frequencies. LIFI has several advantages over WiFi like higher speed, more secure connections, and an unregulated spectrum. However, its signals cannot pass through walls like radio waves, so each room would need its own connected light source. LIFI could be used in applications like traffic lights communicating with cars, in airplanes where WiFi is restricted, and in places that need fast and secure data transmission.
Li fi technology
This document is a presentation on Li-Fi technology, which uses visible light communication to transmit data wirelessly. It introduces Li-Fi and how it works using LED lights to transmit data through rapid on-off pulses too fast for the human eye to detect. Key benefits are its ability to transmit data at very high speeds, its efficiency using existing light infrastructure, and its ability to transmit in places where radio waves cannot due to interference. Examples of potential uses include in hospitals, vehicles, power plants and underwater.
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Similar to LIFI technolgy
lifi zaeem.pptx
Li-Fi is a wireless communication technology that uses light from LED lamps to transmit data. It was invented in 2011 by Professor Harald Haas. Li-Fi offers higher speeds than Wi-Fi and has a larger spectrum bandwidth since it uses light. It provides more secure communication than Wi-Fi since light cannot pass through walls. Potential applications of Li-Fi include use in homes, offices, vehicles, and under water. Li-Fi has advantages like high speed, low energy consumption, and secure communication. However, it also has limitations such as being disrupted by objects blocking the light source and external light interference. Researchers are working to develop smaller LEDs to increase data transmission capacity.
Li-Fi technology
Li-Fi is a technology that uses light from LED bulbs to transmit data wirelessly. It works by varying the intensity of LED lights faster than the human eye can detect. This allows digital data to be transmitted through the LED. Li-Fi was pioneered in the 1990s and provides higher data rates, more security, and energy efficiency compared to traditional Wi-Fi. It can be used in places where Wi-Fi signals cannot reach or are restricted, such as on aircraft or underwater. While Li-Fi has advantages over Wi-Fi, it also has disadvantages like higher installation costs and inability to pass through opaque objects.
Li-fi Technology
Working,Implementation,Li-fi & Wi-fi Comparison,Applications, Advantages & Disadvantages are described in the slides.
Li fi technology
This document discusses Li-fi technology, which uses LED light bulbs to transmit data wirelessly. It begins with an introduction to Li-fi and how it works by varying the intensity of light faster than the human eye can detect. The history of Li-fi development is then outlined, along with the present need for alternatives to radio spectrum. The document explains how Li-fi works and compares it to Wi-fi. Advantages of Li-fi include high data rates, security, and lack of health effects. Applications that could benefit from Li-fi are also proposed, such as traffic lights, hospitals, and street lamps providing wireless access.
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.
Li fi
Li-Fi uses visible light communication instead of radio waves for wireless internet access. It transmits data through LED bulbs that can light a room and transmit information simultaneously. Li-Fi has advantages over Wi-Fi like higher speeds, more available spectrum, and better security since light cannot penetrate walls. It has applications in areas where radio signals are restricted and can enable wireless connectivity on aircraft, in hospitals, and at traffic lights. While Li-Fi has proven successful in initial demonstrations, challenges remain around blocking of light sources and how receiving devices transmit data back to the transmitter.
Li Fi Technology PPT
This PPT is all about light fidelity.How does it work and the principle behind it,and the basic potential applications of lifi
Li fi
The document provides an overview of Li-Fi technology. It begins with an introduction and comparison to Wi-Fi. It then discusses the evolution of Li-Fi and its working components. Li-Fi uses visible light communication and LED bulbs to transmit data wirelessly. It has advantages over Wi-Fi such as higher speeds, more available spectrum, and more secure communication. However, it also has limitations since light cannot penetrate walls and data transmission can be blocked by objects. In conclusion, Li-Fi shows potential for high-speed wireless communication if practical challenges can be addressed.
Li fi
This is the best presentation i am providing to all the students, professionals and others. It will give you all a clear picture about what actually this Li-Fi technology is. This is also a easy guide to the students who are taking presentations or seminar based on this topic. LiFi is the next generation epic technology that would totally change the world to a new era which is fully occupied with the light as source for everything..........I REPEAT LIGHT AS SOURCE FOR EVERYTHING
Lifi
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It was first suggested in 2011 as an alternative to Wi-Fi and has since been proven as a viable technology. Li-Fi transmits data using visible light communication between an LED light bulb and a photodetector. It provides advantages over Wi-Fi such as better security since light cannot pass through walls, higher speed potential, and no radio interference. Main applications of Li-Fi include smart lighting, vehicle transportation, hospitals, and underwater communications.
Li fi technology
Li-Fi technology uses visible light communication to transmit data using LED bulbs that can be switched on and off faster than the human eye can detect. It was proposed by German physicist Harold Hass as a solution to limited radio spectrum capacity issues. Li-Fi provides better bandwidth, security, and data rates over Wi-Fi. It has applications for devices like laptops, smartphones and tablets to transmit data through light without interfering with existing radio technologies. The presentation discusses the history, working mechanism, advantages and limitations of Li-Fi compared to traditional Wi-Fi networks.
LIGHT FIDELITY Technology.Based on Light Transmit .
Li-Fi is a technology that uses visible light communication (VLC) to transmit data wirelessly. It can transmit data at much higher speeds than Wi-Fi. Li-Fi uses LED lamps that can be fitted with small wireless devices that can transmit data. It provides an alternative to radio frequency wireless technologies by using light from LEDs to transmit information. Li-Fi has potential applications in homes, offices, hospitals and vehicles. It could help solve the problem of limited radio spectrum availability and help meet the growing demand for wireless data.
bhditi9xsvyq8jkyqibs-signature-d95a7be852fd787fe3daa50aff242cb4cf0ee27e0d0f4f...
LiFi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It can provide higher speeds than WiFi and does not interfere with other wireless devices. LiFi transmits data using visible light communication (VLC) and infrared light to transmit data. It works by switching LEDs on and off at an extremely high speed, faster than what the human eye can detect. Data is transmitted through subtle changes in the intensity of light from LED bulbs to transmit data wirelessly. LiFi has advantages over WiFi such as higher speeds, more bandwidth availability, more secure communication, and energy efficiency.
Light Fedility PPT
Li-Fi is a visible light communication technology that uses light from LED bulbs to transmit data wirelessly. It was developed by Professor Harald Haas and his team at the University of Edinburgh. Li-Fi uses photo detectors and LED bulbs that can be switched on and off faster than the human eye can detect to transmit data. It provides wireless connections up to 10 times faster than Wi-Fi and has advantages like no interference from radio waves, higher security since light cannot pass through walls, and potential use in environments where Wi-Fi is restricted. Some applications of Li-Fi include use in traffic lights, hospitals, airplanes, and underwater communications.
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
powerpoint presentation of LiFi
This document discusses Li-Fi technology. It provides background on Li-Fi, noting that it uses LED lights to transmit data through light instead of radio waves like Wi-Fi. The document outlines some of the history of Li-Fi development and explains the basic concept of how data is encoded in the light. It then discusses potential applications of Li-Fi including in traffic lights, planes, underwater, and intrinsically safe environments. Advantages are highlighted such as high data rates, security, energy efficiency, and ability to work in places where Wi-Fi cannot. The conclusion is that Li-Fi could provide an alternative to Wi-Fi hotspots using existing light bulbs.
Li-Fi (Light Fidelity)
Light–Fidelity (Li-Fi) is a technology that uses the Light Emitting Diodes (LEDs) to transmit wireless data instead of radio waves.
This is going to be the future of wireless data transmission.
Li - Fi Technology #Seminar #ppt
Li-Fi is a visible light communication system that can provide high-speed wireless communication using light-emitting diodes (LEDs) and photodetectors, which has advantages over Wi-Fi like higher data transmission rates up to 10Gbps, operating in the visible light spectrum to avoid spectrum crunch issues, and providing more secure transmission since light cannot pass through walls. The document outlines the working process of Li-Fi technology and its potential uses and challenges.
Li fi
Light based Wi-Fi (Li-Fi) uses visible light communication and LED bulbs instead of radio waves for wireless data transmission. It has a data rate greater than 10 Gbps and can transmit data through illumination. Li-Fi provides secure, high-speed communication and is an efficient alternative to Wi-Fi, especially in areas where RF is restricted. However, challenges include ensuring two-way communication and interference from external light sources. If widely implemented, Li-Fi could turn every light bulb into a wireless hotspot.
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
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LIFI technolgy
- 1. Hamdard Institute of Engineering Sciences & Technology Presented By Rasim Izhar Ali BECS/S13/0109 Murad Ali Jamali BECS/S13/0106
- 2. Table of Contents • What is Li-fi? • Introduction • History • Present Scenario • Issues of Using Radio Spectrum • Who can resolve this issue? • Principle of Li-Fi • Why Li-Fi use VLC? • Li-Fi Vs Wi-Fi • Applications Of Li-Fi. • Merits And Demerits • Conclusion
- 3. What is Li-fi(LIGHT FIDELITY)? Light based Wi-Fi Light is used instead of radio waves to transmit information. Transceiver fitted LED lamps acts like Wi-Fi modems. LED lamps can light a room as well as transmit-receive information. Sending data through a LED light bulb that varies in intensity faster than human eye can follow.
- 4. History Professor Harald Haas Prof. Harald Haas, from university of Edinburgh in the UK is the founder of Lifi. On 20th July 2011 he used a table lamp with an LED bulb to transmit a video of blooming flowers that was then projected onto a screen behind him. During the event he periodically blocked the light from lamp to prove that the lamp was indeed the source of incoming data.
- 5. Present Scenario 1.4 Million Base Stations 5 Billion Mobile Stations
- 6. Present Scenario Radio Spectrum is congested but the demand for wireless data double each other. Data in the form of tera bytes travel every week or month. Every one want to use wireless data but the capacity is drying up resulting in different issues. So, what can carry this excess demand in future
- 7. Issues Of Using Radio Spectrum Spectrum is 10,000 times greater than that of radio frequency. Light waves available everywhere. Highly efficient since LED consumes less energy. Cannot penetrate through walls. Hence data can be secured.
- 8. Who can resolve this issue?
- 9. Principle of Li-Fi When LED is ON ,we transmit a digital signal 1 and if the LED is OFF , we transmit a digital signal 0.
- 10. Working Principle of Li-Fi
- 11. Why Li-fi use Visible Light Communication? Gama rays, X-rays , Ultraviolet rays are harmful for the human body. Infrared Rays are also dangerous due to eye safety regulation and can only be used with low power. Radio waves are expensive and they are less secure. Therefore, only Visible rays or visible light spectrum is left which is not harmful for humans. Radio Waves Infrared Rays Visible Rays Ultraviolet Rays X-Rays Gamma Rays
- 12. Characteristics Wireless Fidelity Light Fidelity Range 100 meters Based on LED Power Consumption Medium Low Cost Expensive in comparison with LiFi because it uses Radio Spectrum Cheaper than Wifi because free band doesn’t need license and uses light Security Moderate Secured Highly Secured Data transfer rate Within MBPS Greater than GBPS Medium Through which data transfer Use radio Spectrum Use light as a carrier Spectrum Range Radio Spectrum Range is less than visible light spectrum Visible light spectrum is 10,000 times broader than Radio spectrum range
- 13. Applications of Li-Fi Traffic Scenario:- • Lifi can be used to communicate with the LED’s of cars. • This might prevent accidents by exchanging information when the vehicles are too close. • Using Lifi, street lights can be used to send information about the road condition of the car.
- 14. Home And Small Offices In home and small offices, Li-fi can be used to communicate with the devices such as: Laptops Internet access HD Video Streaming Printer
- 15. Street Lamps & Ocean Beds An Ocean Beds Li-Fi can even work under water where wifi fails. Communication between Naval becomes easy. Street Lamps There are millions of Lamps deployed around the world. Each of these street lamps could be a free access point.
- 16. Merits & Demerits Merits Data rate greater than 10Gbps theoretically allowing HD film to be downloaded in 30 seconds. Can be used everywhere even in RF areas, since light waves will not interfere with radio waves. As light waves cannot penetrate through walls, hence data cannot be intercepted which results in providing secured communication Mostly LED light bulbs are used which consumes less energy. Hence cost efficient. Demerits A major challenge of Li-Fi is how the receiving device will transmit back to receiver. Data transmission can be easily blocked by any object placed in front of LED source. Interferences from external light source like sunlight, in the path of transmission can cause interruption in the communication.
- 17. Conclusion Researchers are developing a micron size LED’s. 1000 micron sized LED can fit into an area required by 1sq.mm large single LED. A 1sq.mm sized array of micron sized LED’s could therefore communicate 1000x1000(i.e.) million times as much information as a single 1sq.mm LED. Thus ,if Li-Fi technology can be put into practical use, every bulb can be used as an alternative to Wi-Fi hotspot.