LIFI
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Li-Fi is a wireless optical networking technology that uses light for data transmission. It uses LED or fluorescent lights as transmitters and devices as receivers. Li-Fi transmits data through the visible light spectrum, allowing for larger bandwidth than other wireless technologies. It has advantages like high speed data transfer, secure communication, and no interference with other systems. However, its range is limited as light cannot pass through obstacles and it can be affected by external light sources. Potential applications of Li-Fi include use in areas where wireless connectivity is not allowed.
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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
The document presents a presentation on Li-Fi technology by Anand Kumar Mishra. It introduces Li-Fi as a wireless optical networking technology using LED lights for data transmission. It discusses the history of Li-Fi's development by Professor Harald Haas. It then explains how Li-Fi works by modulating LED bulbs imperceptibly for data transmission, which is received by photoreceptors. It compares Li-Fi's higher speed capabilities to other wireless technologies and outlines applications for Li-Fi including in airlines, power plants, and providing information to save lives. The presentation concludes that if implemented, Li-Fi could enable every light bulb to function as a Wi-Fi hotspot for a cleaner,
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.
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
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
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.
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.
LIFI
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It can provide higher data rates than Wi-Fi and has advantages like highly localized coverage so data cannot pass through walls, lower energy consumption than Wi-Fi, and ability to use existing light infrastructure. Li-Fi works by varying the intensity of light from an LED to transmit digital data. A photo detector at the receiver converts light intensity variations back into an electrical signal and data. Potential applications of Li-Fi include use in aircraft, hospitals and other places where Wi-Fi is restricted.
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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
The document presents a presentation on Li-Fi technology by Anand Kumar Mishra. It introduces Li-Fi as a wireless optical networking technology using LED lights for data transmission. It discusses the history of Li-Fi's development by Professor Harald Haas. It then explains how Li-Fi works by modulating LED bulbs imperceptibly for data transmission, which is received by photoreceptors. It compares Li-Fi's higher speed capabilities to other wireless technologies and outlines applications for Li-Fi including in airlines, power plants, and providing information to save lives. The presentation concludes that if implemented, Li-Fi could enable every light bulb to function as a Wi-Fi hotspot for a cleaner,
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.
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
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
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.
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.
LIFI
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It can provide higher data rates than Wi-Fi and has advantages like highly localized coverage so data cannot pass through walls, lower energy consumption than Wi-Fi, and ability to use existing light infrastructure. Li-Fi works by varying the intensity of light from an LED to transmit digital data. A photo detector at the receiver converts light intensity variations back into an electrical signal and data. Potential applications of Li-Fi include use in aircraft, hospitals and other places where Wi-Fi is restricted.
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.
LIFI TECHNOLOGY
INTRODUCTION
HISTORY
PRESENT SCENARIO
ISSUES REGARDING RADIO SPECTRUM
VISIBLE LIGHT SPECTRUM
HOW LIFI WORKS
CONSTRUCTION OF LIFI
COMPARISON OF LIFI WITH WIFI
APPLICATIONS
LIMITATIONS
CONCLUSION
REFERENCES
Li fi technology seminar-2014
this is ppt on lifi technology....describing meaning, working , construction , application , merits/demerits etc. of lifi technology.
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.
Li - Fi The Future Technology
Li-Fi is a new technology that uses light from LED bulbs to transmit data wirelessly. It provides higher speeds and more available bandwidth than traditional Wi-Fi networks. The presentation covers the history of Li-Fi development, how it works by varying the intensity of LED light faster than the human eye can detect, its advantages over Wi-Fi like higher speeds and security, potential applications in traffic lights, airplanes and underwater, and challenges to commercialization like the need for line of sight and modifications to existing devices. Overall, Li-Fi shows promise as a supplement to Wi-Fi but still faces technical hurdles to widespread adoption.
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 at the University of Edinburgh in 2011 as an alternative to Wi-Fi. Li-Fi transmits data through illumination by taking the fiber out of fiber optics and sending data through a LED light bulb. It provides higher speed, more secure data transmission than Wi-Fi as light cannot pass through walls. Potential applications of Li-Fi include use in traffic lights, hospitals, airplanes, and as a means of wireless internet from street lamps. However, challenges remain around interference from external light sources and the need for line of sight transmission.
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.
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 wireless optical networking technology
This document provides an overview of Li-Fi technology. It describes Li-Fi as a fast, optical version of Wi-Fi that uses LED lights to transmit data wirelessly. The technology was invented in 2011 by German physicist Harald Hass. Li-Fi offers higher data transfer rates and more security than Wi-Fi, works in dense environments, and has potential applications in hospitals, airlines, and underwater. However, Li-Fi faces limitations in not being able to pass through solid objects and potential interference from other light sources. Overall, the document argues that if developed, Li-Fi could provide internet connectivity anywhere there is light.
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
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
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.
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(light fidelity)-the future technology in wireless
This document discusses Li-Fi technology, which uses visible light communication to transmit data wirelessly. It provides an introduction to Li-Fi, including its history developed by Professor Harald Haas. Li-Fi works by varying the rate at which LED lights flicker on and off to transmit digital data. Compared to Wi-Fi, Li-Fi has advantages like higher speed, more bandwidth availability, more secure communication, and lack of interference. Potential applications of Li-Fi discussed include use in education systems, hospitals, aircraft internet access, and areas where other wireless technologies are banned. While Li-Fi does not pass through objects and can be interrupted by external light sources, it represents a promising future technology for wireless communication if developed
Li fi technology - A complete overview
This document provides an overview of Li-Fi technology. It begins with background on the growing demand for wireless data and shortage of radio frequency spectrum. It then defines Li-Fi as a visible light communication technology that transmits data through LED light bulbs by varying their intensity faster than the human eye can detect. The document outlines how Li-Fi works and compares it to Wi-Fi. It discusses Li-Fi's advantages like high capacity and availability but also challenges like inability to pass through solid objects. Finally, it proposes solutions to challenges like implementing handovers between light sources and using techniques like time division multiplexing for multi-user support.
Lifi (presentation)
Muhammad Aman defended his MS thesis on designing, implementing, and analyzing a Li-Fi system in noisy environments. He presented work on proposing a Li-Fi model, simulating it, analyzing results, and modeling noise. Key findings included Li-Fi working up to 9m with a single LED, a maximum reception angle of 15 degrees, and the system retrieving signals distorted by 30% but requiring complex filtering for 50% distortion. Future work could develop hardware, enable duplex communication, and apply Li-Fi to power line communication.
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.
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.
Lifi Seminar Report Full
This document provides an overview of Li-Fi technology in 12 sections. It begins with an abstract discussing how Li-Fi works by transmitting data through LED light bulbs that vary intensity faster than the human eye can detect. Section 4 explains that Li-Fi encodes data by flickering LEDs on and off at extremely high speeds to transmit binary data through light. Li-Fi has achieved speeds over 500 megabytes per second in labs and has potential for speeds over 10 gigabits per second. The document provides details on the history, workings, advantages and applications of Li-Fi technology.
Presentation on Gi-Fi
The document discusses Gi-Fi technology, a new wireless technology that operates at 60GHz and allows data transfer speeds up to 5GB per second. It provides an introduction to Gi-Fi, compares it to existing technologies like Bluetooth and Wi-Fi, discusses its architecture featuring a single-chip transceiver and how it works. Potential applications of Gi-Fi technology include wireless personal area networks, inter-vehicle communication, and high-speed transfer of large files like videos. Gi-Fi offers benefits over existing technologies like higher speeds, lower power consumption, and is expected to become the dominant wireless networking technology within five years.
Li Fi Technology
This ppt is on Light Fidelity.
This can be used as a reference for preparing a ppt on new technology to give as your seminar topic.
Developing Solar Projects under REC Mechanism in India
Instead of signing MoU, PPA, submitting performance bank guarantee etc for 25 years or participating in cut throat bidding process (project is viable only to module manufacturers for the rate it can be achieved), I suggest to develop the solar project under REC Mechanism, as for selling the power through average exchange rate and realizing the mean value of REC rate for first five years and half of the floor price for next 5 years, yields levellised rate of Rs.10.536*. [Solar Tariff in Gujarat: Rs. 9.28 for project commissioned up to 2013, Rs. 8.63 for project commissioned up to 2014 and Rs. 8.03 for project commissioned up to 2015].
Even if REC floor price is reduced by half for next 5 years and NIL thereafter, developing the project under REC and selling the power through Energy Exchange, would yield rate of Rs.9.647 which is more than maximum rate of NVVN against cost of generation not more than Rs.6.50. [NVVN is the nodal agency of NTPC for procuring solar power to meet their REC requirement. In the 1st phase NVVN finalized bid for 150 MW Solar Projects and in latest bid for 350 MW Solar Projects. In the latest NVVN bid the price offer for solar power projects were minimum Rs.7.49 and maximum Rs.9.44]
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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.
LIFI TECHNOLOGY
INTRODUCTION
HISTORY
PRESENT SCENARIO
ISSUES REGARDING RADIO SPECTRUM
VISIBLE LIGHT SPECTRUM
HOW LIFI WORKS
CONSTRUCTION OF LIFI
COMPARISON OF LIFI WITH WIFI
APPLICATIONS
LIMITATIONS
CONCLUSION
REFERENCES
Li fi technology seminar-2014
this is ppt on lifi technology....describing meaning, working , construction , application , merits/demerits etc. of lifi technology.
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.
Li - Fi The Future Technology
Li-Fi is a new technology that uses light from LED bulbs to transmit data wirelessly. It provides higher speeds and more available bandwidth than traditional Wi-Fi networks. The presentation covers the history of Li-Fi development, how it works by varying the intensity of LED light faster than the human eye can detect, its advantages over Wi-Fi like higher speeds and security, potential applications in traffic lights, airplanes and underwater, and challenges to commercialization like the need for line of sight and modifications to existing devices. Overall, Li-Fi shows promise as a supplement to Wi-Fi but still faces technical hurdles to widespread adoption.
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 at the University of Edinburgh in 2011 as an alternative to Wi-Fi. Li-Fi transmits data through illumination by taking the fiber out of fiber optics and sending data through a LED light bulb. It provides higher speed, more secure data transmission than Wi-Fi as light cannot pass through walls. Potential applications of Li-Fi include use in traffic lights, hospitals, airplanes, and as a means of wireless internet from street lamps. However, challenges remain around interference from external light sources and the need for line of sight transmission.
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.
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 wireless optical networking technology
This document provides an overview of Li-Fi technology. It describes Li-Fi as a fast, optical version of Wi-Fi that uses LED lights to transmit data wirelessly. The technology was invented in 2011 by German physicist Harald Hass. Li-Fi offers higher data transfer rates and more security than Wi-Fi, works in dense environments, and has potential applications in hospitals, airlines, and underwater. However, Li-Fi faces limitations in not being able to pass through solid objects and potential interference from other light sources. Overall, the document argues that if developed, Li-Fi could provide internet connectivity anywhere there is light.
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
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
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.
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(light fidelity)-the future technology in wireless
This document discusses Li-Fi technology, which uses visible light communication to transmit data wirelessly. It provides an introduction to Li-Fi, including its history developed by Professor Harald Haas. Li-Fi works by varying the rate at which LED lights flicker on and off to transmit digital data. Compared to Wi-Fi, Li-Fi has advantages like higher speed, more bandwidth availability, more secure communication, and lack of interference. Potential applications of Li-Fi discussed include use in education systems, hospitals, aircraft internet access, and areas where other wireless technologies are banned. While Li-Fi does not pass through objects and can be interrupted by external light sources, it represents a promising future technology for wireless communication if developed
Li fi technology - A complete overview
This document provides an overview of Li-Fi technology. It begins with background on the growing demand for wireless data and shortage of radio frequency spectrum. It then defines Li-Fi as a visible light communication technology that transmits data through LED light bulbs by varying their intensity faster than the human eye can detect. The document outlines how Li-Fi works and compares it to Wi-Fi. It discusses Li-Fi's advantages like high capacity and availability but also challenges like inability to pass through solid objects. Finally, it proposes solutions to challenges like implementing handovers between light sources and using techniques like time division multiplexing for multi-user support.
Lifi (presentation)
Muhammad Aman defended his MS thesis on designing, implementing, and analyzing a Li-Fi system in noisy environments. He presented work on proposing a Li-Fi model, simulating it, analyzing results, and modeling noise. Key findings included Li-Fi working up to 9m with a single LED, a maximum reception angle of 15 degrees, and the system retrieving signals distorted by 30% but requiring complex filtering for 50% distortion. Future work could develop hardware, enable duplex communication, and apply Li-Fi to power line communication.
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.
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.
Lifi Seminar Report Full
This document provides an overview of Li-Fi technology in 12 sections. It begins with an abstract discussing how Li-Fi works by transmitting data through LED light bulbs that vary intensity faster than the human eye can detect. Section 4 explains that Li-Fi encodes data by flickering LEDs on and off at extremely high speeds to transmit binary data through light. Li-Fi has achieved speeds over 500 megabytes per second in labs and has potential for speeds over 10 gigabits per second. The document provides details on the history, workings, advantages and applications of Li-Fi technology.
Presentation on Gi-Fi
The document discusses Gi-Fi technology, a new wireless technology that operates at 60GHz and allows data transfer speeds up to 5GB per second. It provides an introduction to Gi-Fi, compares it to existing technologies like Bluetooth and Wi-Fi, discusses its architecture featuring a single-chip transceiver and how it works. Potential applications of Gi-Fi technology include wireless personal area networks, inter-vehicle communication, and high-speed transfer of large files like videos. Gi-Fi offers benefits over existing technologies like higher speeds, lower power consumption, and is expected to become the dominant wireless networking technology within five years.
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Li fi(light fidelity)-the future technology in wireless
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Li Fi Technology
This ppt is on Light Fidelity.
This can be used as a reference for preparing a ppt on new technology to give as your seminar topic.
Developing Solar Projects under REC Mechanism in India
Instead of signing MoU, PPA, submitting performance bank guarantee etc for 25 years or participating in cut throat bidding process (project is viable only to module manufacturers for the rate it can be achieved), I suggest to develop the solar project under REC Mechanism, as for selling the power through average exchange rate and realizing the mean value of REC rate for first five years and half of the floor price for next 5 years, yields levellised rate of Rs.10.536*. [Solar Tariff in Gujarat: Rs. 9.28 for project commissioned up to 2013, Rs. 8.63 for project commissioned up to 2014 and Rs. 8.03 for project commissioned up to 2015].
Even if REC floor price is reduced by half for next 5 years and NIL thereafter, developing the project under REC and selling the power through Energy Exchange, would yield rate of Rs.9.647 which is more than maximum rate of NVVN against cost of generation not more than Rs.6.50. [NVVN is the nodal agency of NTPC for procuring solar power to meet their REC requirement. In the 1st phase NVVN finalized bid for 150 MW Solar Projects and in latest bid for 350 MW Solar Projects. In the latest NVVN bid the price offer for solar power projects were minimum Rs.7.49 and maximum Rs.9.44]
Solar power projects under rec mechanism in india
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light Fidelity by Harikiran Shetty Manipal University
This document provides an overview of Li-Fi technology. It begins with an introduction defining Li-Fi as data transmission through light illumination. It then discusses why Li-Fi is needed given increasing data usage and wireless spectrum shortage. The document outlines the history and founder of Li-Fi technology. It explains how Li-Fi works by modulating light intensity to transmit data and provides comparisons to other wireless technologies. The document discusses advantages like security and speed, disadvantages like need for line of sight, and applications for Li-Fi including in hospitals, airlines and traffic signals. It concludes that Li-Fi uses light bulbs as wireless hotspots for a cleaner and greener future of wireless connectivity.
LI-FI Presentation
In this technology, light is passed through transmission channel as it is the fastest medium. It overcomes the defect of WI-FI as well. Transmission of data takes place through illumination. Using this, we can connect to several devices under a single LED light.
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 (Light-Fidelity)
LI-FI uses visible light communication technology to transmit data through LED light bulbs. Pioneered in the 1990s, LI-FI transmits data by varying the intensity of LED lights faster than the human eye can detect. In 2011, Harald Haas demonstrated speeds of over 100Mbps using a table lamp. Recent trials have achieved speeds of 1GB per second in offices. LI-FI has potential applications in vehicles, aircraft, hospitals and more due to its ability to transmit data in RF-restricted areas. However, light cannot pass through objects, installation costs are currently high, and two-way transmission needs to be addressed.
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 Technology
This document provides an overview of Li-Fi technology. It discusses the history of Li-Fi, invented by Dr. Harald Haas in 2011, how it works using LED lights to transmit data, comparisons to Wi-Fi, applications in traffic control and airlines, advantages like using visible light spectrum for high speed data transfer, and limitations such as needing line of sight and not penetrating solid objects. The conclusion envisions a future where every light bulb is a wireless hotspot for cleaner, greener and safer connectivity.
VLC Visible light communication (leaders of li fi)
Visible light communication uses LED lights to transmit data by varying the intensity of light. It offers several advantages over traditional wireless technologies like WiFi. Data can be transmitted through visible light at speeds higher than WiFi and without interfering with other wireless networks. It also provides a secure communication medium as light cannot pass through walls. While the technology is still being developed, it shows promise in helping overcome bandwidth limitations of existing wireless networks.
Li-fi Presentation by Debika sadhukhan
Li-Fi uses visible light communication and LED bulbs to deliver broadband internet and wireless connectivity. It provides higher speeds, greater capacity, and more secure access than traditional Wi-Fi. While under continued research, Li-Fi holds potential economic benefits through reduced costs compared to Wi-Fi and its ability to take advantage of LED lighting that is expected to become ubiquitous. However, challenges remain regarding external light interference and modifications needed for power grid connections and uplinks.
Google Maps Presentation
How to mash up Google Maps to create location-based interactive media. By Daniella Peting, student in School of Communication at Loyola University Chicago.
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 technology paper presentation, Li- Fi, VLC, Visible light communication...
The demand for wireless data is increasing at an exponential rate hence to cater the demand, various technology options are to be looked for and need to be implemented. An emerging technology using Visible Light Communication (VLC) for high speed wireless communications is Light Fidelity dubbed as Li-Fi. To provide high speed communication light is modulated without interfering the main purpose of lamp that is of illumination. LEDs are considered as a key component to be used in transmission because of its low cost and Omni-presence. Li-Fi can be thought of as a light-based Wi-Fi. That is, it uses light instead of radio waves to transmit information. And instead of Wi-Fi modems, Li-Fi would use transceiver-fitted LED lamps that can light a room as well as transmit and receive information.
Li-Fi
In simple terms, Li-Fi can be thought of as a light-based Wi-Fi. That is, it uses light instead of radio waves to transmit information. And instead of Wi-Fi modems, Li-Fi would use transceiver-fitted LED lamps that can light a room as well as transmit and receive information. Since simple light bulbs are used, there can technically be any number of access points.
This technology uses a part of the electromagnetic spectrum that is still not greatly utilized- The Visible Spectrum. Light is in fact very much part of our lives for millions and millions of years and does not have any major ill effect. Moreover there is 10,000 times more space available in this spectrum and just counting on the bulbs in use, it also multiplies to 10,000 times more availability as an infrastructure, globally.
Li-Fi Vs. Wi-Fi (Light Fidelity Vs. Wireless Fiedlity)
It is the complete presentation on Wi-Fi (Wireless Fidelity) with short introduction on Li-Fi(Light Fidelity)
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light Fidelity by Harikiran Shetty Manipal University
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VLC Visible light communication (leaders of li fi)
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Li fi technology paper presentation, Li- Fi, VLC, Visible light communication...
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Li-Fi Vs. Wi-Fi (Light Fidelity Vs. Wireless Fiedlity)
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This document reviews research on LiFi networks, discussing open issues, applications, and future directions. It provides an in-depth analysis and classification of research areas for LiFi networks. LiFi uses visible light communication to transmit data wirelessly using LED lights. The document compares LiFi to other technologies, discusses multi-user access techniques in LiFi networks, and addresses open issues. It concludes with a literature comparison that serves as the basis for proposed open issues and research trends in LiFi networks.
applsci-11-11118.pdf
This document reviews research on LiFi networks, discussing open issues, applications, and future directions. It provides an in-depth analysis and classification of research areas for LiFi networks. LiFi uses visible light communication to transmit data wirelessly using LED lights. The document compares LiFi to other technologies, discusses multi-user access techniques in LiFi networks, and addresses open issues. It concludes with a literature comparison that serves as the basis for proposed open issues and research trends in LiFi networks.
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This document discusses Li-Fi (Light Fidelity) technology, which uses visible light communication and LED lights to transmit data wirelessly. It describes the design, working, challenges, applications, advantages and disadvantages of Li-Fi compared to existing Wi-Fi technology. Key points include that Li-Fi has faster speeds than Wi-Fi, uses light which has a larger bandwidth than radio frequencies, provides more secure data transmission since light cannot pass through walls, and has growing applications in areas like aviation, smart homes and hospitals. However, it also faces challenges such as limited range and requiring line of sight between devices.
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The document discusses using Li-Fi (Light Fidelity) technology for vehicle-to-vehicle communication. It proposes that Li-Fi could provide a cheap way to communicate between cars with high data rates and bandwidth efficiency. The key aspects covered include:
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This document provides an overview of Li-Fi technology. Li-Fi uses visible light communication and LED bulbs to transmit data wirelessly. It was invented in 2011 by Harald Haas and provides several advantages over Wi-Fi such as higher data speeds, better security since light cannot pass through walls, lower costs, and safety since light does not penetrate the human body. Li-Fi has applications in smart lighting, mobile devices, underwater networks, and airplane connectivity. While it does not require radio frequencies, it requires line of sight between transmitters and receivers.
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This document provides an overview of Li-Fi technology. It begins with defining Li-Fi as a wireless technology that uses light from LED bulbs to transmit data. The document then discusses the history of Li-Fi, which was first proposed in 2004 by Harald Haas. It explains how Li-Fi works by modulating the intensity of light from an LED bulb to transmit bits. The document compares Li-Fi to Wi-Fi, noting Li-Fi has advantages like higher security, bandwidth and energy efficiency. Potential applications of Li-Fi include use in aircraft, hospitals and traffic lights. Limitations include inability to work in darkness and potential interference from light sources. Future developments could make Li-Fi an efficient alternative to
How li fi technology is working is being presented.
Li-Fi is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. It provides higher speeds and more secure connectivity than traditional Wi-Fi networks. Li-Fi works by transmitting data through LED light bulbs and receiving the data using photodetectors that can detect light fluctuations imperceptible to the human eye. It has several advantages over Wi-Fi like higher speeds, enhanced security, reduced interference, and more efficient use of the wireless spectrum. While Li-Fi has promising applications in healthcare, transportation, manufacturing and more, challenges remain around line-of-sight requirements, infrastructure costs, and standardization. As these issues are addressed, Li-Fi is anticipated to
LiFi technology
This document discusses Li-Fi technology, which uses visible light communication to transmit data wirelessly using LED light bulbs. Li-Fi was coined by Professor Harald Haas as an alternative to Wi-Fi that uses radio frequencies. It provides bidirectional and fully networked wireless connections at high speeds. Potential practical uses of Li-Fi include use in traffic lights, hospitals, airplanes, and underwater communications. Compared to Wi-Fi, Li-Fi has benefits like higher speed and more secure communication, but also faces limitations such as inability to pass through solid objects and interference from other light sources. Future developments could allow Li-Fi to still function in daylight and at night by modulating light intensity.
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
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Li-Fi technology uses visible light communication and LED lights to transmit data wirelessly. It provides several advantages over traditional Wi-Fi such as better security, higher speeds, and an unlicensed spectrum. Li-Fi is based on using light from LED bulbs to transmit data and can support data rates above 1 gigabit per second. While it has limitations like inability to pass through walls, Li-Fi has potential applications in street lights, traffic signals, undersea communication, and areas where Wi-Fi is not practical or allowed.
Li fi
we are the 6th sem Information Science and Engineering students from Sri Venkateshwara College of Engineering Bangalore
Overview of Li-Fi Technology
The document provides an overview of Li-Fi technology, which uses visible light communication to transmit data wirelessly using LED bulbs. It discusses how Li-Fi works by transmitting data through small changes in the intensity of light that are undetectable to the human eye. Li-Fi provides higher bandwidth, efficiency, availability and security compared to traditional Wi-Fi networks. The document also outlines some of the advantages of Li-Fi such as higher speeds of up to 224 gigabits per second, more available spectrum than radio frequencies, improved security since light cannot pass through walls, and its ability to be used in places where Wi-Fi signals cannot reach or are restricted.
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This presentation summarizes Li-Fi (Light Fidelity) data transfer technology. Li-Fi uses visible light communication to transmit data wirelessly similarly to Wi-Fi but with higher speeds and more security. It was coined by Prof. Harald Haas and can complement or replace RF networks. The presentation describes how Li-Fi works using lasers and solar panels, its ideal operating range of under 50 feet, and disadvantages of requiring line of sight. Potential applications discussed include underwater communications, use in hospitals, and providing internet access anywhere via streetlights. The future scope of Li-Fi for data transfer is also summarized.
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Li-Fi is a revolutionary wireless tech using LED light to transmit high-speed data, offering speed and security benefits over Wi-Fi. Challenges include range limitations, but ongoing research aims to improve it. Li-Fi suits sensitive environments like hospitals and planes, with no electromagnetic interference. It's a promising advancement with potential to enhance connectivity.
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LIFI
- 2. Why LI-FI ? It is a “Wireless Optical Networking Technology”. As it uses light for transmission of data and the operation of whole system is depends on precise transmission of data through light. Therefore, this system is termed as “Li-Fi”.
- 4. WhAT IS LI-FI TEChNOLOGy?
- 5. In Li-Fi technology the transmission source is LED or Fluorescent blub. Various devices that requires wireless medium for communication are used as receiver. Li-Fi technology uses visible light spectrum for transmission of data. As it uses visible light spectrum for communication ,this technology is also called as VLC (Visible Light Communication). Due to use of Visible light spectrum Li-Fi system has larger bandwidth as compared to other systems.
- 6. NECESSITY OF LI-FI SYSTEM The essential factors for designing of a Li-Fi system are as follows: 1.Presence of light. 2. Line Of Sight. 3. Fluorescent Blub or LED.
- 7. LI-FI SYSTEM
- 8. ADVANTAGES OF LI-FI Data transfer takes place at very high speed. It provides a secure communication. Harmless for human beings as it uses VLC Doesn’t interferes with other system operation as light is used as source of transmission.
- 9. DISADVANTAGES OF LI-FI Range of communication is limited as light cannot pass through opaque object or obstacles. It can’t cover a large area as that of radio waves. It can get affected by external light interference like sun, normal bulbs. The implementation cost of VLC system is high.
- 14. REFERENCES International Journal of Research & Development in Technology and Management Science –Kailash by Akshit Aggarwal and Deepali Jhanji. Volume - 21| Issue 1 | ISBN - 978-1-63102-445-0 | March 2014 seminarprojects.com/s/seminar-report-on-lifi http://en.wikipedia.org/wiki/Li-Fi www.lificonsortium.org/ A Study on LiFi – Light Fidelity Technology by Vaishali Jadhav International Journal of Scientific & Engineering Research, Volume 5, Issue 6, June-2014 709 ISSN 2229-5518. Light-Fidelity: A Reconnaissance of Future Technology by Dhakane Vikas Nivrutti, Ravi Ramchandra Nimbalkar .Volume 3, Issue 11, November 2013 ISSN: 2277 128X International Journal of Advanced Research in Computer Science and Software Engineering. http://www.oledcomm.com/ Li-Fi (Light Fidelity)-The future technology In Wireless communication by Jyoti Rani, Prerna Chauhan, Ritika Tripath . International Journal of Applied Engineering Research, ISSN 0973-4562 Vol.7 No.11 (2012)