Within the light, the intensity of the colors red, green, and blue (RGB) is finely modulated to embed data into the LED light. They start up quickly and emit light according to the current passed through them. As previously stated, they are semiconductors. LEDs are different from halogen or filament bulbs as they do not need to warm up. To send data over light, LiFi systems require a strong, robust light source like LED bulbs. It converts the data received into a binary data stream perceivable by humans such as video and audio applications. Data is fed into the light bulb and sends the data at extremely high speeds to the photodiode. This process occurs at extremely high speeds that are unperceivable to the human eye. This means current supplied to the bulb can be modulated, which in turn, modulates the light they emit. They are outfitted with a chip that serves as the signal processing unit. In this case, light emitting diodes (LED) serve as the light source. The light source transmits data using emitted light as the medium. The photodiode acts as a transceiver that receives light signals and transmits them back. As a type of VLC system, it requires two components: a photodiode and a light source. LiFi uses visible light as a medium for the transmission of data. It provides many available frequencies to which tasks can be offloaded, freeing up much-needed space for 5G. This is crucial especially with the data demands of today. The visible light spectrum is also broader as opposed to RF – about 10,000 larger than the entire radio frequency spectrum. While these were only lab tests, speeds at even a small percentage of that figure in the real world still indicate having a significant advantage over WiFi. Data transmission tests have reached speeds of up to 224 Gbps, roughly 100 times faster than WiFi. In so many ways, LiFi is considered more superior to WiFi. However, instead of the radio spectrum, it makes use of the visible light spectrum through LED lightbulbs outfitted with a special chip. Similar to WiFi, LiFi is the only form of VLC that allows the bidirectional transmission of light. LiFi has a special distinction from other VLC systems. Specifically, it is a form of visible light communications (VLC) system that makes use of light-emitting diodes (LED) for data transmission. LiFi is a wireless optical networking technology. To solve this problem, newer technologies are necessary to provide spectrum relief. And as the demand gets heavier, the day it arrives also comes sooner. As such, it can only allow so few broadcasts before it runs out of available frequencies. However, the radio spectrum is a finite resource. The main reason for this is the overwhelming demand for radio frequencies over which data can be transmitted. There have been talks of a looming spectrum crunch since the early 2000s. But as the demand for big data continues to increase, everything could one day grind to a halt. Through all of these data, we have become so interconnected that we can’t imagine life without it. Phone masts, radio towers, remote controls, taxi radios, airport beacons, and many more pour forth data on a daily basis. Unbeknownst to us, the air around us is filled with large blocks of data.
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