Li-Fi – Al-Watan Saudi newspaper

It has become widely known that data transfer is one of the most important daily activities for people in our rapidly changing world today. One of the major challenges facing the transfer of this data is the slow internet connection when multiple computers and devices, or cell phone and cell phone are connected to each other.

Also, the unavailability of fixed bandwidth due to the population density around a single bandwidth source that does not allow high simultaneous and peak data transfer rates for subscribers.

Thus appeared Li-Fi technology, which is a wireless data communication technology, which can be a solution to all these challenges by using modern technologies in the electromagnetic field and the visible spectrum.

The word (Li-Fi) is a term and name for a technology and an abbreviation from the English language expressed as (LiFi), which is derived from a foreign term (Light and Fidelity), which to this day has not been translated into Arabic. . Like other terms of foreign sources in the field of information and communication technology in general or in modern technologies in particular.

It also refers to a clear type of communication and modern technologies, which is visible light communication (VLC).

Li-Fi uses a new method of wireless communication, which uses LED lights to transmit data wirelessly.

The data flow speed of the wireless data communication technology in Li-Fi is very high and has very low cost compared to the technologies that were once modern.

The basic scientific and practical framework of this technology is the transmission of data using light emitted by LED lamps of different intensities.

Its transmitters and receivers are used in LED lights that enable it to transmit, transmit and receive information.

As a result, we now have the clear addition of a new, unused bandwidth of visible light, which can provide an additional frequency band of those available for radio frequency (RF) communication.

Instead, as this modern technology uses visible light, the harmful effects on people of electromagnetic waves are identified, mitigated and significantly reduced.

One of the major benefits of this modern technology is that it reduces the security concerns of cyber attacks. It cannot access data or information on the internet in the absence of light, which means it is protected. Not only that, but this modern technology has multiple ingredients not found in similar modern technologies when we talk about the elements of its competitive advantages such as efficiency and high speed in data transfer, which in Germany virtually rates more than 500 reached. megabytes per second, which makes it possible to download and transfer an HD movie in just 30 seconds.

In addition to its availability, ease of access and availability, as well as its efficiency, its cost-effective efficiency rate and its promising future.

The most important are cyber security and privacy. For example, light cannot penetrate or pass through concrete structures and walls when used within homes, institutions, and governmental or private organizations.

This modern technology provides internet and data transfer function only to those in the light area within the target coverage area. The internet cannot be intercepted and data transmitted or misused, which means it adds high protection and costs less than usual in terms of information protection and security.

This modern technology has a promising future due to the rapid growth in the use of LED lights within homes, institutions and organizations in saving and reducing the consumption and use of electrical energy and others that will come later.

There are many applications for this new technology, ranging from Internet access for users in public areas through street lighting, to self-driving and automatic cars communicating through headlights.

Li-Fi applications can also extend to areas where the Wi-Fi network is weak. They can be used safely in airplanes, for example for passengers traveling in airplanes.

And who can often get low speed internet at a very high rate. And also in hospitals, where Wi-Fi is available, which is susceptible to interference with radio waves, modern and advanced equipment, equipment and technologies that use waves that are forbidden to humans. It can also be used within educational institutions and replaces all traditional means, providing internet services to its beneficiaries within specific regions, with high speed and security, and of course at a lower cost.

It can also be used under the sea, as it enables autonomous marine objects, equipment and parts to use headlights to communicate and process data autonomously, and periodically send it to the sea surface of the mother vehicle.

It can be used as a powerful means of communication in times of disaster, some may not be generally aware of the protocols during disasters.

Or in subway stations, dead zones for most emergency communications. Given the speed and security that Li-Fi technology offers compared to Wi-Fi, Li-Fi will be available and widely used, as global reports indicate that the market for modern technology is Li-Fi, whose market value in 2019 is more than $ 70 million, will reach $ 8 billion by 2030.

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