Each and every day, technology is making major advancements. Li-Fi is a new technology with the potential to change the way we connect to the internet. This new technology is more advantageous than the wireless fidelity (Wi-Fi). Let’s get to know more about the new technology and how it works.
What is Li-Fi?
Li-Fi (light fidelity) is a bidirectional wireless system that transmits data via LED or infrared light. In simple terms, it uses the power of light to transmit data. Through this, it promises speeds that are 100 times faster than Wi-Fi.
This technology was first introduced in 2011 by Professor Harald Haas during his TED Talk, where he demonstrated the use of visible light to stream an HD video. It was in this presentation that the term was coined to describe high-speed data transmission via light waves.
Li-Fi vs Wi-Fi
Light fidelity is faster and cheaper compared to wireless fidelity. Its advantages include.
Faster Data Speeds:
- LiFi can achieve theoretical speeds of up to 224 Gbps, which is significantly faster than Wi-Fi.
- Greater Bandwidth: The visible light spectrum is about 10,000 times larger than the entire radio frequency spectrum used by Wi-Fi, which means there’s much more bandwidth available.
- It’s more secure as signals are confined into physical space, as light cannot pass through walls. Unlike Wi-Fi, which can penetrate walls and spread to nearby areas.
- This makes it more secure, as it reduces the risk of hacking or unauthorized access.
- Efficient Use of Existing Infrastructure: Li-Fi can be integrated into existing LED lighting systems.
- With more available bandwidth, Li-Fi can support more devices in the same physical space than Wi-Fi.
Additionally, Li-Fi transmits its signal without interruptions, making communication more stable than with Wi-Fi.
How LiFi works.
- The LiFi router receives the information via the Ethernet cable that connects it to the local network,
- It transmits it to the LED bulb, which fluctuates at high speed, with a frequency of tens of thousands or even millions of signals per second.
- The light signal is perceived by the Li-Fi key, which transforms it into an electrical signal and transmits it to the computer.
- The computer translates the signal into information that can be understood by humans.
While Li-Fi is still in its early stages of development, it has the potential to revolutionize wireless communication.
