Li-fi technology
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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.
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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.
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 technolgy
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.
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.
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 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.
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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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.
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 technolgy
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.
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.
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 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.
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
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.
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 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
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.
Ppt on Li-Fi Technology by Manisha Reddy
LI-FI is a technology that uses light from LED bulbs to transmit data, varying the intensity of light faster than the human eye can detect. It began development in the 1990s and offers potential solutions to issues with radio spectrum capacity and security. LI-FI works by transmitting digital 1s and 0s via the on/off state of LED lights. It has applications for traffic lights, intrinsically safe environments, and undersea use. Advantages over Wi-Fi include larger bandwidth, higher efficiency, more availability, and better security, though it requires the presence of light.
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.
Lifi technology
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It was invented by Professor Harald Haas and has faster transmission speeds than Wi-Fi. Li-Fi works by varying the intensity of light from an LED to transmit data and can support transmission speeds over 100Gbps. While promising for the future, Li-Fi currently faces challenges from light interference and an inability to pass through opaque objects. Potential applications of Li-Fi include use in traffic lights, hospitals, airplanes, and as free internet access points using street lamps.
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 Technology
This document is a seminar report on Li-Fi technology submitted by Sanjush S. in partial fulfillment of a Bachelor of Technology degree. It provides an abstract, table of contents, and covers topics such as the history of Li-Fi, how Li-Fi works using visible light communication, Li-Fi technology components including transmitters and receivers, modulation techniques, standards, applications, and comparisons with Wi-Fi technology. The report was certified and acknowledged by faculty members at Aryanet Institute of Technology in Palakkad, India.
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.
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
Introduction to li-fi technology
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It is a bidirectional, high-speed and fully networked wireless communication technology. Li-Fi is similar to Wi-Fi but instead of radio waves, it uses visible light communication and infrared light. Data is transmitted through illumination by taking fiber out of fiber optics. Li-Fi can deliver speeds up to 100 times faster than Wi-Fi. It has applications in areas where radio waves are restricted such as in hospitals, aircrafts, and classified military zones.
lifi presentation
Hey guys this ppt is all about lifi presentation.
you can refer this presentation as your project .
this is our final presentation.
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
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.
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 – Light Fidelity (Animated)
LiFi uses visible light communication and LED light bulbs to deliver high-speed wireless internet similar to WiFi. It provides higher bandwidth than radio waves and can be used in places where WiFi signals cannot reach. Some applications of LiFi include using traffic lights and vehicle lights to communicate, providing internet access on airplanes and underwater, and creating safe internet connections in hospitals. However, LiFi requires line of sight and can be interrupted by sunlight or other light sources.
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.
Light Fidelity (Li Fi)
This document provides an overview of Li-Fi technology. It discusses how Li-Fi works by using LED bulbs to transmit data via light instead of radio waves like Wi-Fi. The history notes that Professor Harald Haas coined the term Li-Fi and helped start companies to commercialize it. Advantages include very high data rates, better security since light cannot pass through walls, and reuse of existing light infrastructure. Challenges include interference from other light sources and difficulty transmitting data back to the transmitter. The conclusion is that if implemented, Li-Fi could provide a cleaner, greener and safer alternative to wireless data transmission.
Li fi technology
The document discusses the history and development of wireless networks and introduces LiFi technology as an alternative to WiFi. LiFi transmits data through visible light communication by varying the intensity of LED bulbs and lamps. It has benefits over WiFi like higher speeds, more available spectrum, better security since light does not pass through walls easily. LiFi is expected to become widely available in the next decade and transform how people access and transmit data through ubiquitous light sources.
Li fi
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It was invented by Harald Haas and has the potential to provide higher speeds than Wi-Fi. Li-Fi works by varying the intensity of light from an LED to transmit digital data which is detected by a photodetector. It offers several advantages over Wi-Fi like better security, no interference with other devices, and wider coverage area. If developed further, every LED bulb could act as an internet hotspot for wireless connectivity.
LiFi Technology
This about the upcoming technology and a replacement for WiFi.
It is cheaper and very faster than the present wireless communication technology.
It was invented by Harald Hazz in 2012 at University of Edinburg. And demonstrated in a demonstration conducted by TED.
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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.
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 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
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.
Ppt on Li-Fi Technology by Manisha Reddy
LI-FI is a technology that uses light from LED bulbs to transmit data, varying the intensity of light faster than the human eye can detect. It began development in the 1990s and offers potential solutions to issues with radio spectrum capacity and security. LI-FI works by transmitting digital 1s and 0s via the on/off state of LED lights. It has applications for traffic lights, intrinsically safe environments, and undersea use. Advantages over Wi-Fi include larger bandwidth, higher efficiency, more availability, and better security, though it requires the presence of light.
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.
Lifi technology
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It was invented by Professor Harald Haas and has faster transmission speeds than Wi-Fi. Li-Fi works by varying the intensity of light from an LED to transmit data and can support transmission speeds over 100Gbps. While promising for the future, Li-Fi currently faces challenges from light interference and an inability to pass through opaque objects. Potential applications of Li-Fi include use in traffic lights, hospitals, airplanes, and as free internet access points using street lamps.
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 Technology
This document is a seminar report on Li-Fi technology submitted by Sanjush S. in partial fulfillment of a Bachelor of Technology degree. It provides an abstract, table of contents, and covers topics such as the history of Li-Fi, how Li-Fi works using visible light communication, Li-Fi technology components including transmitters and receivers, modulation techniques, standards, applications, and comparisons with Wi-Fi technology. The report was certified and acknowledged by faculty members at Aryanet Institute of Technology in Palakkad, India.
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.
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
Introduction to li-fi technology
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It is a bidirectional, high-speed and fully networked wireless communication technology. Li-Fi is similar to Wi-Fi but instead of radio waves, it uses visible light communication and infrared light. Data is transmitted through illumination by taking fiber out of fiber optics. Li-Fi can deliver speeds up to 100 times faster than Wi-Fi. It has applications in areas where radio waves are restricted such as in hospitals, aircrafts, and classified military zones.
lifi presentation
Hey guys this ppt is all about lifi presentation.
you can refer this presentation as your project .
this is our final presentation.
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
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.
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 – Light Fidelity (Animated)
LiFi uses visible light communication and LED light bulbs to deliver high-speed wireless internet similar to WiFi. It provides higher bandwidth than radio waves and can be used in places where WiFi signals cannot reach. Some applications of LiFi include using traffic lights and vehicle lights to communicate, providing internet access on airplanes and underwater, and creating safe internet connections in hospitals. However, LiFi requires line of sight and can be interrupted by sunlight or other light sources.
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.
Light Fidelity (Li Fi)
This document provides an overview of Li-Fi technology. It discusses how Li-Fi works by using LED bulbs to transmit data via light instead of radio waves like Wi-Fi. The history notes that Professor Harald Haas coined the term Li-Fi and helped start companies to commercialize it. Advantages include very high data rates, better security since light cannot pass through walls, and reuse of existing light infrastructure. Challenges include interference from other light sources and difficulty transmitting data back to the transmitter. The conclusion is that if implemented, Li-Fi could provide a cleaner, greener and safer alternative to wireless data transmission.
Li fi technology
The document discusses the history and development of wireless networks and introduces LiFi technology as an alternative to WiFi. LiFi transmits data through visible light communication by varying the intensity of LED bulbs and lamps. It has benefits over WiFi like higher speeds, more available spectrum, better security since light does not pass through walls easily. LiFi is expected to become widely available in the next decade and transform how people access and transmit data through ubiquitous light sources.
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Li fi
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It was invented by Harald Haas and has the potential to provide higher speeds than Wi-Fi. Li-Fi works by varying the intensity of light from an LED to transmit digital data which is detected by a photodetector. It offers several advantages over Wi-Fi like better security, no interference with other devices, and wider coverage area. If developed further, every LED bulb could act as an internet hotspot for wireless connectivity.
LiFi Technology
This about the upcoming technology and a replacement for WiFi.
It is cheaper and very faster than the present wireless communication technology.
It was invented by Harald Hazz in 2012 at University of Edinburg. And demonstrated in a demonstration conducted by TED.
Li fi ppt by sunil
Li-Fi is a fast, cheap optical version of Wi-Fi that uses light-emitting diodes (LEDs) and visible light communication (VLC) to transmit data wirelessly. It was invented in 2012 by German physicist Harald Hass as an alternative to radio frequency wireless technologies like Wi-Fi that use light waves instead of radio waves. Li-Fi has several advantages over Wi-Fi including higher speeds, lower costs due to using unused light spectrum, more secure communications since light does not pass through walls, and reduced radio interference. It is being applied in areas like hospitals that require strong wireless security and on vehicles for mobile connectivity.
LI-FI Technology
It's a new technology it may be available in future. It is introduced by Mr. Harald Haas a German scientist professor at Edingburg University. In this technology we use light as wireless communication device for more information see it in TED Global talk by mr. Harald haas.
Li-fi Technology presentation
Professor Harald Haas began researching Li-Fi, which stands for Light Fidelity, in 2004 and gave the first demonstration of a Li-Fi prototype in 2011. Li-Fi uses LED lights that vary in intensity faster than the human eye can see to transmit data wirelessly. It has advantages over Wi-Fi as the visible light spectrum is not congested like the radio spectrum and Li-Fi could allow download speeds up to 10Gbps, downloading a full HD movie in 30 seconds. While still in development, Li-Fi shows potential for a cleaner, greener and brighter wireless future.
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 best n short
Li-Fi is a wireless communication technology that uses light from LED bulbs to transmit data. It was invented in 2011 by Professor Harald Haas at the University of Edinburgh. Li-Fi works by varying the intensity of LED light faster than the human eye can detect to transmit digital 1s and 0s. It provides wireless connectivity using visible light that has a higher speed than Wi-Fi and does not interfere with radio frequencies. While Li-Fi has advantages over Wi-Fi such as higher speed and capacity, it also faces challenges of being interrupted by obstacles that block light and inability to work while on the move.
Li fi technology
This document discusses Li-Fi technology, which uses visible light communication to transmit data wirelessly. Li-Fi was invented by German physicist Harald Haas in 2012 and uses LED lights to transmit data at speeds over 150 Mbps by varying the intensity of light faster than the human eye can detect. It has several advantages over Wi-Fi such as higher speed, more available spectrum, more security as light does not pass through walls, and is more efficient. Li-Fi has already been demonstrated successfully in transmitting data using an ordinary table lamp.
LiFi
This document provides an overview of visible light communications (VLC), also known as Li-Fi. It discusses the history and invention of VLC, how VLC works by transmitting data through light bulb illumination at speeds too fast for the human eye to detect, its advantages over Wi-Fi like high security and availability anywhere light is present, and potential applications including use in traffic lights, hospitals, airplanes and underwater. The document also outlines the components needed for a VLC system including LEDs, photodiodes and control circuitry, and discusses future developments and limitations such as the need for line of sight transmission.
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.
Lifi (Light Fidility)
Li-Fi is a technology that uses light from LED bulbs to transmit data wirelessly. It was pioneered in the 1990s but is gaining more attention as an alternative to Wi-Fi due to the scarce and congested radio spectrum. Li-Fi works by varying the intensity of light from an LED bulb faster than what the human eye can detect to transmit digital data. It has applications in areas like hospitals, aircraft, and underwater communications where radio signals don't work well. However, it also has limitations since the signals cannot pass through walls and require line of sight between the light source and receiver.
Lifi
LI-FI is a technology that transmits data through illumination by using LED light bulbs that vary in intensity faster than the human eye can detect. It began development in the 1990s where researchers discovered LEDs could transmit data. LI-FI works by transmitting either a 1 or 0 by turning an LED on or off very quickly. It has advantages over Wi-Fi like higher speeds, more security, and being harmless. Potential applications include using traffic lights that communicate between cars to help prevent accidents. Further exploration of using every light bulb as a wireless access point could lead to a cleaner, greener future.
Lifi Technology
Ashish Kumar Baghel and Chandraprakash Verma presented on Li-Fi technology at the Oriental Institute of Science and Tech in Bhopal on March 13, 2013. Li-Fi uses visible light communication to transmit data through LED bulbs that can switch on and off faster than the human eye can detect. The technology was pioneered in the 1990s by researchers in Germany, Korea, and Japan. Harald Haas continues advancing Li-Fi which could help address the congestion issues with radio spectrum as data demands double each year. Li-Fi has potential applications in traffic lights, intrinsically safe environments, and as public internet hotspots using street lamps. While still developing, Li-Fi shows promise to enable wireless
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 technology
Li-Fi (Light Fidelity) is a new technology that uses visible light communication for wireless transmission of data using light-emitting diodes (LEDs). LEDs can be switched on and off at extremely high speeds to transmit digital signals. A controller is connected to LED bulbs to encode data onto the light. Researchers have achieved data rates over 500 megabytes per second using white LED lights. Li-Fi provides higher speeds, is more secure, has a larger spectrum range than Wi-Fi, and has applications for vehicles, traffic lights, street lamps, airplanes, and hospitals.
Presentation final
Ibrahim Quddusi's presentation discusses the emerging technology of Li-Fi, which stands for Light Fidelity. Li-Fi transmits data through illumination by varying the intensity of LED light bulbs faster than the human eye can detect. A German physicist first began developing this concept in 2004. Li-Fi offers several advantages over traditional Wi-Fi such as higher speeds, more available spectrum, and better security since light cannot pass through walls. While still in development, Li-Fi may one day allow data transmission through light bulbs in homes and public areas like traffic lights.
Li fi technology
Light Fidelity is the next generation technology which gives rise the next path braking technology by which we internet can be provided more efficiently, cheaply and with more speed using LED bulbs.
Lifi
Li-Fi is a technology that uses light from LED bulbs to transmit data wirelessly. It works by switching the state of LED bulbs on and off very fast in order to transmit binary code, with on representing 1 and off representing 0. The switching is too fast for the human eye to detect, so the bulb appears to be on continuously. Li-Fi has several advantages over traditional Wi-Fi including increased bandwidth and security. It can be used in applications such as traffic lights, aircraft cabins, underwater environments, and areas restricted to radio frequencies. However, Li-Fi also faces limitations including inability to pass through opaque objects and interference from other light sources.
Lifi
Li-Fi is a technology that uses light from LED bulbs to transmit data wirelessly. It works by switching the state of LED bulbs on and off very fast in order to transmit binary code, with on representing 1 and off representing 0. The switching is too fast for the human eye to detect, so the bulb appears to be on continuously. Li-Fi has several advantages over traditional Wi-Fi including increased bandwidth and security. It can be used in applications such as traffic lights, aircraft cabins, underwater environments, and locations where radio frequencies are restricted. However, Li-Fi also faces limitations including inability to pass through objects and interference from other light sources.
Li-Fi
LiFi is cellular wireless networking (re)using lights. Specifically, light emitting diodes (LEDs) are used in LiFi as visible light transmitters.
LiFi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. LiFi is designed to use LED light bulbs similar to those currently in use in many energy-conscious homes and offices.
Li-Fi uses common household LED (light emitting diodes) light bulbs to enable data transfer, boasting speeds of up to 224 gigabits per second.
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Li-fi technology
- 2. WHAT IS 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 -German physicist, DR. Harald Haas
- 3. PRESENT SCENARIO 1.4 Million 5 Billion
- 4. PRESENT SCENARIO • Radio Spectrum is congested but the demand for wireless data double each year .Every thing, it seems want to use wireless data but the capacity is drying up. • So what can carry this excess demand in the future. • Drawbacks - Capacity, Availability, Security & Efficiency.
- 6. LI-FI
- 7. Gama rays cant be used as they could be dangerous. X-rays have similar health issues. Ultraviolet light is good for place without people, but other wise dangerous for the human body. Infrared, due to eye safety regulation, can only be used with low power. Radio Waves Infrared Rays Visible Rays Ultraviolet Rays X- Rays Gama Rays
- 8. HOW LI-FI WORKS ? • If the led is on, you transmit a digital 1, if its off you transmit a 0.
- 11. ADVANTAGES • Capacity • Availability • Efficiency • High Security • Easy To Use • Fast Data Transfer • Harmlessness • Low-cost
- 12. CONCUSSION The possibilities are numerous and can be explored further. If this technology can be put into practical use, every bulb can be used something like a Wi-Fi hotspot to transmit wireless data and we will proceed toward the cleaner, greener, safer and brighter future.
- 13. THANK YOU