Free Sample: Li-Fi Technology paper example for writing essay

Li-Fi Technology - Essay Example

This means that everywhere where Leeds are used, lighting bulbs can bring not only the light but wireless connection at the same time. With increasing demand for wireless data, lack of radio spectrum and issues with hazardous electromagnetic pollution, Lie-If appears as a new greener, healthier and cheaper alternative to Wi-If. Moreover Lie-If makes possible to have a wireless Internet in specific environments (hospitals, airplanes etc. ) where Wi-If is not allowed due to interferences or security considerations. Keywords? WI-IF, VEIL, photo detector, lamp driver, LED (Light Melting Diode) l.

The technology Is capable of transferring thousands of streams of data simultaneously, in parallel, at higher speeds, with the help of special modulation, context by Herald Has in his TED Global talk on Visible Light Communication. “At the heart of this technology is a new generation of high brightness light-emitting diodes”, says Herald Has from the University of Edinburgh, I-J,” Very simply, if the LED is on, you transmit a digital 1, if it’s off you transmit a O,”Has says, “They can be switched on and off very quickly, which gives nice opportunities for transmitted data”. Fig. L Herald Has

It is possible to encode data in the light by varying the rate at which the Leeds flicker on and off to give different strings of Is and So. The LED intensity is modulated so rapidly that human eye cannot notice, so the output appears constant. With the use of light radiating diodes Lie-If technology transfers data through wireless. Lie-If is a new exemplar for photosensitive wireless technology to provide unprecedented connectivity within a localized data centric environment. There has been a complete shift in wireless technology due to increase demand Lie-If is such a free band which is sciences free that is why it is less at cost than Wi-If.

With the use of special intonation using a distinctive signal processing technology thousands of streams of data can be transferred simultaneously at higher speed. Lie- If is useful in aircraft because the lights present above head can be used for data transmission. It is useful in controlling traffic at traffic signals as it communicates with LED lights of cars. Where there is difficult to amateur optical fibers Al-If is used. The new Lie-If technology can be well managed very easily and it is pretty simple.

At one corner you will be having a De which will be working as a light source and on the other corner a Light Sensor or a photo detector. Light Sensor detect light as soon as the LED light starts glowing and will give an output of either binary or binary. [pick] Fig. 2 Lie-If Environment If the LED is on, you transmit a digital 1, if it’s off you transmit a O. What VEIL? Visible light communication (VEIL)-“A potential solution to the global wireless spectrum shortage” Lie-If (Light Fidelity) is a fast and cheap optical version of Wi-If, the technology of which is based on Visible Light Communication (VEIL).

VEIL is a data immunization medium, which uses visible light between 400 This (780 NM) and 800 This (375 NM) as optical carrier for data transmission and illumination. It uses fast pulses of light to transmit information wirelessly. Lie-If Technology at a Glance! The LED bulb will hold a micro-chip that will do the Job of processing the data. The light intensity can be manipulated to send data by tiny changes in amplitude. This technology uses visible spectrum of light, a part of the electromagnetic spectrum that data simultaneously, in parallel, in higher speeds with the help of special modulation, using a unique signal processing technology.

Some Points of Lie-If The light used to transmit the data is called D-light by Herald Has, the inventor of Lie- F’. In future data for laptops, Semaphore’s, and tablets can be transmitted through the light in a room by using Lie-If. Security would be a snap?if you can’t see the light, you can’t access the data. II. CONSTRUCTION The LIE-IF product consists of 4 primary sub-assemblies: Bulb RFC power amplifier circuit (PA) Printed circuit board (PC) Enclosure The PC controls the electrical inputs and outputs of the lamp and houses the microelectronic used to manage different lamp functions.

An RFC (radio-frequency) signal is generated by the solid-state PA and is guided into an electric field about the bulb. The high concentration of energy in the electric field vaporizes the contents of the bulb to a plasma state at the bulb’s center; this controlled plasma generates an intense source of light. All of these subassembly are contained in an aluminum enclosure FUNCTION OF THE BULB:- At the heart of LIE-IF is the bulb sub-assembly where a sealed bulb is embedded in a dielectric material. This design is more reliable than conventional light sources that insert degradable electrodes into the bulb.

The dielectric material serves two reposes; first as a waveguide for the RFC energy transmitted by the PA and second as an electric field concentrator that focuses energy in the bulb. The energy from the electric field rapidly heats the material in the bulb to a plasma state that emits light of high intensity and full spectrum. The design and construction of the LIE-IF light source enable efficiency, long stable life, and full spectrum intensity that is digitally controlled and easy to use. “There are over 14 billion light bulbs worldwide, they Just need to be replaced with LED ones that transmit data”. Ill. HOW LIE-IF WORKS? Fig. Block diagram of Lie-FL communication sat development in living the use of gadgets and invention of new gadgets is increasing which lead to the technological developments. There are many situations in which people get frustrated with the dull performance signals of Wi-If at a place with many network connections in seminars conferences etc. Lie FL fulfils these needs . This foundations idea first striker the mind of Herald Has from University of Edinburgh, I-J, in his TED Global talk on VEIL. His idea was very simple that if the LED is “on” then the digital 1 can be transmitted and if the LED is off’ then the digital O can be transmitted.

Lead’s can be switched on and off very quick. For transmitting data this way all that we require is Lead’s and controller that code data into Lead’s. Parallel data transmission can be done by using array of Lead’s or by using red, green, blue Lead’s to alter light frequency with the frequency of different data channel. Advancements and enhancements in this field generate a speed of 10 gaps! But amazingly fast data rates and lowering band widths are not the only reasons that enhance this technology. Lie-FL usually is based on light and so it can be probably implemented in aircrafts and hospitals that are prone to inference from radio eaves . Jennie Wi-If, Lie-If can work even under-water which makes it more advantageous for military operations. Radio waves are replaced by light waves in data transmission called Lie- Ft. Light emitting diodes can be switched on and off very much faster than the human eye allowing the light source to appear continuously. The data transmission is done through binary codes which involve switching on LED can be done by logic 1 and switch off using logic O. The encoding of information in light can therefore be identified by varying the rate at which the Lead’s flicker on and off to give strings of Co’s and Xi’s. Siebel light communication is this method of using rapid pulses of light to transmit information wirelessly. To further get a grasp of Lie-If consider an IR remote. It sends a single data stream of bits at the rate of 10,000-20,000 BSP. Now replace the IR LED with a Light Box containing a large LED array. This system is capable of sending thousands of such streams at very fast rate. Light is inherently safe and can be used in places where radio frequency communication is often deemed problematic, such as in aircraft cabins or hospitals.

Therefore the replacement for this Wi-If is Lie-If as Has has mentioned in his TED TALK that LIFE has 10,000 times the spectrum of Wi-If. Because the lights are not only al-lowed in operation theatres but also the most dazzling fixtures in the room. 3. Reduction in accident numbers At traffic signals, we can use LIFE in order to communicate with LED lights of the cars by the number of accidents can be reduced. Data can be easily transferred by making use of LIFE lamps with the street lamps. 4.

Replacement for others technologies This technology doesn’t deal with radio waves, so it can easily be used in the places where Bluetooth, infrared, WIFE and Internet are banned. In this way, it will be most helpful transferring medium for us. It includes other benefits like: *A very wide spectrum over visible wave length range. * Extremely high color fidelity. *Instant start time. *Easy terminal Management. *Dynamic dark I. E. Brightness Modulation of lamp output to enhance video *Trouble-free integration into existing light engine platform. Entrants. Lie-If the upcoming and on growing technology acting as competent for various other developing and already invented technologies. Since light is d major source for transmission in this technology it is very advantageous and implantable in various fields that can’t be done with the Wi-If and other technologies. Hence the future applications of the Lie-If can be predicted and extended to different platforms like education fields, medical field, industrial areas and many other fields. Ill. CONCLUSION The possibilities are numerous and can be explored further.

If this technology can be put into practical use, something like a Wi-If hotshot to transmit wireless data and we will proceed toward the cleaner, greener, safer and brighter future. The concept of Lie-If is currently attracting a great deal every bulb can be used of interest not least because it may offer a genuine and very efficient alternative to radio-based wireless. As a growing number of people and their many devices access wireless internet, the airwaves are becoming increasingly clogged, making it more and ore difficult to get a reliable, high-speed signal.