This section is mainly dedicated for comparing Li-Fi and Wi-Fi considering various aspects. LI-FI is a visible light technology to achieve high speed wireless communication by using visible light to transfer data. It acquired this name due to its similarity to WI-FI which utilizes radio waves for transfer of data.
WI-FI is great for extensive wireless coverage in buildings but has severe limitations for high density wireless information coverage in limited space and has radio waves interference issues; While Li-Fi greatly overcomes such restrictions.
These two technologies can be well thought-out as harmonizing to each other in numerous ways and Li-Fi has advantages over usual Wi-Fi. …show more content…
Wi-Fi work on radio frequency, which only make up a little part of the whole electromagnetic spectrum. With growing user necessary insist for wireless internet, the available radio spectrum is tending to become less and less. Radio waves are harmful for human beings as they penetrate the body and may cause mutation. Radio waves can’t be used in all environments, mostly in aircrafts, chemical factories and power plants as well as in hospitals.
In Li-Fi visible light spectrum is used to pass on information, as its spectral width is so much large as compared to conventional radio waves. There is 10,000 times extra space existing in this spectrum and it has the potential to pass on higher bandwidths. The communication of the information can be with the help of all kinds of light close to visible region, doesn’t matter the part of the spectrum that they fit in. That is, the light can fit in to the invisible, uv or the visible division of the spectrum. This part of spectrum is not harmful to our body and is safe to use in different environments. 2. …show more content…
For Wi-Fi we have rate restrictions for information transfer.
Li-Fi can offer enormously high speed of the internet and we can download massive files in just few seconds of time. Speed for Li-Fi is 10000 folds more than Wi-Fi much larger than 1 Gbps can be achieved.
According to Chi Nan, a professor at Fudan University, single micro chipped LED bulb can produce data speed of 150 megabits per second
Comparison between current and future wireless technology:
There are more than 1.4 million cellular radio masts across the world. These masts consume enormous amounts of power, the majority of which is used for cooling the station rather than distribution of radio waves. In fact, the efficiency of such stations is about 5%. LED lights drink less energy and are extremely efficient.
Radio waves can penetrate all the way through walls. This leads to numerous security concerns as they can be intercepted without difficulty.
While information transfer for Li-Fi It is very protected and safe (no one can hack it). As we use visible light no signal disperses through walls.
Such visible light communication could be used securely in airplanes without disturbing airlines