Li-fi technology in wireless data communication utilizes visible data lights to transmit the data wirelessly. The transmission band range in the red band is 400 THz, and for violet is 800 THz. It seems now the trend of data transmission through radio waves is going to be obsolete in the coming years. Why is everyone debating on Li-Fi Vs Wifi? Which one is better? It is mainly because of data transmission through amplitude modulation of the light source. In this article, we are going to share the complete details of Li-Fi, its principle, and comparison with Wifi. Let’s explore both the technologies with us and then decide which one is better.

Principle of Li-Fi

We all know that Wifi utilizes the radio waves for transmission. Contrary to this, Li-Fi uses visible light for data communication. Li-Fi transfers data in a consistent and well-defined way because of the amplitude modulation of the light source. The technology of Li-Fi mainly introduced also to solve the issues which radio communication technologies faced.

Moreover, it boosts the radio frequency bandwidth. In the competition of Li-Fi Vs Wifi: Which one is better?. We declare Li-FI best because of fast transfer speed, secure, better bandwidth, and more efficient than Wifi. The design of Li-Fi makes it better than WIFI. It comprised of many LED lamps with a number of wireless devices such as PDAs, smartphones, and laptops. The factors such as a line of sight, photodetector received data, illumination of light, and LED make the Li-Fi performance better and robust.

The main difference in Li-Fi and Wifi

There are many parameters, such as speed for data transfer, spectrum range, cost, medium, and operating frequency, which makes Li-Fi better than Wifi. Because of all these parameters, Li-Fi going to replace Wifi in the coming ten years.

The data transfer speed for Wifi is 150 MBPS, obviously less than Li-Fi with speed greater than 1 Gbps. Unlikely, Wifi uses the radio spectrum as the medium for data communication. In contrast, Li-Fi uses light as the carrier medium, and we know that light travel faster than anything else in this world. The radio frequency spectrum range is also less than the visible light spectrum, which makes Li-Fi more robust and scalable as compared to Wifi.

Must read: How AI is bringing innovation in Robots

Must read:Problems of isolated nodes in Zigbee for WSNs

Cost factor

While deploying any technology, two things researchers always kept in mind. The number one how it is going to perform, is it going to perform better? The second one is the cost. If the cost is less and performance is best, do you still use the outdated technology. So, this is the main reason that Li-Fi is going to replace the Wifi in the coming ten years.

Wifi is expensive because of radio spectrum intervention. Contrary to this, Li-Fi is cheap because it uses light and does not need any spectrum.

Achieving huge data rates

Wifi does not have high intensities because of the radio spectrum, whereas Li-FI has contained high energies because of LED lights. This technology eliminates the limitations of Wifi by utilizing different light sources and LEDs for the transfer of data.


In, capacity and bandwidth, Li-Fi has no match. The radio waves have 1000 times less wide bandwidth as compared to Wifi. Moreover, there are enormous light sources that make Li-Fi independent and robust with high capacity.


Light can travels more quickly and light sources available everywhere, so in the availability factor, Li-Fi again won against Wifi. Moreover, it does not have interference issues like Wifi, which occur because of nearby access points.

Secure data transfer

The Wifi is costly as compared to Li-Fi because its safe implementation demands different access methods and security policies. It is impossible to block radio waves. In contrast, light can be prevented quickly and saves the cost of security policies, and we can say that it saves time as well during implementation.


As a concluding remark for Li-Fi Vs Wifi: Which one is better? The winner is Li-Fi because of its easy implementation, secure environment, and less costly. Li-Fi is advantageous and covers all the limitations of RF technology.

Keep visiting infosectweaks for more news and information on technology. For any queries, contact us


Please enter your comment!
Please enter your name here