This document provides an overview of Li-Fi technology. It describes Li-Fi as a method for transmitting data through illumination by varying the intensity of LED light bulbs faster than the human eye can detect. The document outlines the history of Li-Fi's invention in 2011, how it works using visible light instead of radio waves, and its advantages like larger bandwidth, higher security, and not requiring a license. Potential disadvantages discussed include not working in the dark and signals being blocked by walls. The document compares Li-Fi to Wi-Fi and outlines applications of Li-Fi technology in areas like traffic signals, airlines, hospitals, and underwater communications.
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(led transmission of data) presentationKakashi57
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
Design, Working, Challenges, Applications, Advantages and Disadvantages of Li...ijtsrd
This article demonstrates the definition of Li Fi Light Fidelity , its different applications, Advantages, Disadvantages as well as Challenges which would be great for an upcoming generation under wireless technology. The research is based on the various factors, consequences and risk factors associated with the advent of this field. This also demonstrates the communication of worldwide speaks with VLC. Li Fi could be a wireless networking technology thats wont to transmitting data from one device to a different device. This research paper covers the applications of Li Fi and compare with existing technology like Wi Fi. Nisha Shelke | Dr. Anandhi Giri ""Design, Working, Challenges, Applications, Advantages and Disadvantages of Li-Fi in Wireless Networks"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-2 , February 2020,
URL: https://www.ijtsrd.com/papers/ijtsrd30249.pdf
Paper Url : https://www.ijtsrd.com/computer-science/computer-network/30249/design-working-challenges-applications-advantages-and-disadvantages-of-li-fi-in-wireless-networks/nisha-shelke
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(led transmission of data) presentationKakashi57
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
Design, Working, Challenges, Applications, Advantages and Disadvantages of Li...ijtsrd
This article demonstrates the definition of Li Fi Light Fidelity , its different applications, Advantages, Disadvantages as well as Challenges which would be great for an upcoming generation under wireless technology. The research is based on the various factors, consequences and risk factors associated with the advent of this field. This also demonstrates the communication of worldwide speaks with VLC. Li Fi could be a wireless networking technology thats wont to transmitting data from one device to a different device. This research paper covers the applications of Li Fi and compare with existing technology like Wi Fi. Nisha Shelke | Dr. Anandhi Giri ""Design, Working, Challenges, Applications, Advantages and Disadvantages of Li-Fi in Wireless Networks"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-2 , February 2020,
URL: https://www.ijtsrd.com/papers/ijtsrd30249.pdf
Paper Url : https://www.ijtsrd.com/computer-science/computer-network/30249/design-working-challenges-applications-advantages-and-disadvantages-of-li-fi-in-wireless-networks/nisha-shelke
LI-FI stands for “Light Fidelity”.
It is the transmission of data through illumination ,sending data through a Light Emitting Diode which varies in intensity faster than human eye can follow to deliver high speed data transmission.
Advantages of LI-FI
Higher Bandwidth (almost 10000 times more)
Availability
Efficiency
High Security
Easy to use
Fast data transfer
Harmless
Low cost
High capacity
This is one of the most emerging technology for the transmission of information over light. Transmission over light is faster than any other in the universe. because the light is the fastest thing in the universe.
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 stands for “Light Fidelity”.
It is the transmission of data through illumination ,sending data through a Light Emitting Diode which varies in intensity faster than human eye can follow to deliver high speed data transmission.
Advantages of LI-FI
Higher Bandwidth (almost 10000 times more)
Availability
Efficiency
High Security
Easy to use
Fast data transfer
Harmless
Low cost
High capacity
This is one of the most emerging technology for the transmission of information over light. Transmission over light is faster than any other in the universe. because the light is the fastest thing in the universe.
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.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
2. CONTENTS
What is Li-Fi ?
History of Li-Fi ?
How it works ?
Advantages
Disadvantages
Wi-Fi v/s Li-Fi
Applications
Conclusion
3. What is Li-Fi?
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 visible light instead of radio waves to
transmit information.
Why VLC?
- Gama rays cant be used as they could be dangerous.
-X-rays have similar health issues.
-Infrared, due to eye safety regulation, usage is limited.
-Ultraviolet light is good for place without people.
4. History
This technology was invented by German Physicist
“HARALD HAAS”, from the university of Edinburgh, U.K.
He demonstrated it in the year 2012.
In April 2014, the Russian company Stins Coman
announced the development of a Li-Fi wireless local
network called Beam Caster.
In 2014 a new record was established by Sisoft (a
Mexican company) that was able to transfer data at
speeds of up to 10Gbit/s across a light spectrum
emitted by LED lamps.
6. Advantages
Larger bandwidth.
High efficiency.
More availability.
High security.
No licenseneeded.
Green informationtechnology.
Lighting points used as Hotspots.
This technology worldwidecan be used for every street.
7. Disadvantages
Li-Fi doesn’t work in the dark.
LiFi can’t pass through walls.
Interference from external sources through path of
transmission will course interruption in the communication.
High installation cost of the VLC systems.
Wastage of energy.
8. WiFi v/s LiFi
WiFi
Wireless fidelity.
Transmits data using Radio waves.
Not blocked by walls.
Low rate of data transmission.
Slow speed (54-250Mbps).
Not secure.
LiFi
Light fidelity.
Transmits data using Light waves.
Blockedby walls.
High rate of data transmission.
Fastspeed internet (1-3.5 Gbps).
Secure.
11. Conclusion
Overcomes the limitations of radio spectrum.
High speed of 10Gbps can be achieved.
The possibilitiesare numerous and can be explored further.
If this technologycan be put into practical use, every bulb can be used
somethinglike a Wi-Fihotspot.
We will proceedtoward the cleaner, greener, saferand brighter future.
This may solveissues such as the shortageof radio-frequencybandwidth.
Allows internetwhere traditional radio basedwireless isn’t allowedsuch as
aircraftor hospitals
LI-FI is enabledby advancedigital transmissiontechnologies
