Differences between these technologies: Li-Fi vs Wi-Fi - Li-Fi Information (2024)

FAQs

Differences between these technologies: Li-Fi vs Wi-Fi - Li-Fi Information? ›

LiFi vs WiFi - Key Differences

Wi-Fi(wireless fidelity) and Li-Fi(light fidelity) are two different technologies that are used to send and receive data wirelessly. In the case of Wi-Fi, we use Routers and Radio Frequency (RF) waves to transmit data, whereas in Li-Fi we use LED bulbs and Light signals to transmit and receive data.

The technology operates in additional unregulated spectrum, where it has no interference with RF-based wireless technologies. Enhanced security is another advantage, as Li-Fi communication is confined to the physical boundaries of the light signal, such as the inside of a room, making it difficult to intercept.

Hi-fi stood for “high-fidelity” and was used to describe a phonograph/radio system with excellent sound. Wi-Fi, by comparison, does not stand for “wireless fidelity” and has nothing to do with sound.

High speeds: LiFi can provide internet speeds over 100 Gbps, which is much faster than WiFi. This can enable high-speed applications. Security: Light cannot penetrate through walls that contain data within a closed area making it more secure.

LiFi operates on light waves, which do not interfere with the waves emitted by other wireless technologies like Wi-Fi, 4G, and 5G. This non-interference makes LiFi particularly suitable for environments like aviation, where it doesn't disrupt onboard equipment.

Another big advantage of LiFi is that the usage of light allows LiFi connections to occur almost instantaneously because light travels at extremely fast speeds. This results in faster transmission of data and faster internet connections – about 100 times faster than speeds achievable by WiFi.

LiFi is significantly more secure than WiFi. LiFi uses light sources to transmit data. WiFi uses radio waves to transmit data. Radio waves can pass through pretty much all objects, which makes it susceptible to piggybacking and potentially the theft of data.

Yes, Li-Fi is considered better than Wi-Fi in terms of security, latency, health impact, stability, and interference. What is LiFi Internet? Li-Fi, or Light Fidelity, is a wireless communication technology that uses visible light to transmit data, providing high-speed, reliable, and secure internet connectivity.

Need for Special Hardware: LiFi needs special LED bulbs for transmission and photo-detector for reception. The need for special LED bulbs has made it difficult to implement LiFi on a large scale as these bulbs are not yet mass produced.

What are the disadvantages of Li-Fi? ›

The technology makes a LED light bulb emit pulses of light that are undetectable to the human eye and within those emitted pulses, data can travel to and from receivers. It multiplies the speed and bandwidth of wifi, 3G and 4G. It means it is faster than wi-fi. It is expected to be cheaper than Wi-Fi.

If by hi-fi we mean high fidelity i.e. "the reproduction of sound with little distortion, giving a result very similar to the original" then yes. Most modern smartphones, especially flagship, have little (or inaudible) distortion at this stage.

Li-Fi can transmit data at a peek speed of more than 1 Gbps, which is estimated to reach 10 Gbps, due to low interference, exceeding all current RF technologies (Wi-Fi of 150 Mbps, Bluetooth of 3 Mbps, and IrDA of 4 Mbps) [6] .

Connecting to the internet over LiFi is as confined as the light from that LED. It can't penetrate walls like WiFi. Just one obstacle, and bam you're disconnected! You would also need to be in a defined range to use it efficiently as light intensity decreases with distance.

Key Difference Between Bluetooth and Wi-Fi

Bluetooth is used for short-range device-to-device communication, whereas Wi-Fi provides Local area networking and internet access. Bluetooth ranges up to only 30 feet, while the range of Wi-Fi is hundreds of feet.

Disadvantages of Li-Fi technology include: Internet cannot be used without a light source. This could limit the locations and situations in which Li-Fi could be used. Because it uses visible light, and light cannot penetrate walls, the signal's range is limited by physical barriers.

Some advantages and disadvantages of Lifi technology

As already mentioned, it would move in the range of 10 to 20 Gbps, and maybe even more (in some tests it has even reached 224 Gbps). Disadvantage: light waves are not able to pass through opaque obstacles, such as walls, so they would have range limitations.

Need for Special Hardware: LiFi needs special LED bulbs for transmission and photo-detector for reception. The need for special LED bulbs has made it difficult to implement LiFi on a large scale as these bulbs are not yet mass produced.

Wi-Fi is good for providing widespread wireless coverage within buildings, but Li-Fi is ideal for providing high-density wireless data coverage in restricted areas and reducing radio interference. Li-Fi outperforms Wi-Fi in terms of bandwidth, efficiency, availability, and security.