Latest Li-fi Research News

The latest Li-Fi Research and Development News from Professor Harald Haas.

How fast can LiFi be?

LiFi could transmit up to 100 Gbps and possibly higher, but this would require a change in lighting technology.

Recent news report that LiFi is 100 times faster than WiFi. The assumption was that the average WiFi speeds are 10 Mbps, and that LiFi can be as fast as 1 Gbps. It is important to highlight that 1 Gbps transmission speeds from an off-the-shelf commercial LED light bulb have not been demonstrated, yet. In this discussion, it is important to compare like-for-like. The facts are:

What is LiFi?

Light-Fidelity (LiFi) takes visible light communication (VLC) further by using light emitting diodes (LEDs) to realise fully networked wireless systems.

New results on Hybrid LiFi/WiFi networks

Our latest research on load balancing in hybrid WiFi/LiFi networks has shown an interesting result: There is a direct relationship between WiFi throughput and LiFi throughput. Specifically, as the LiFi throughput increases, so does the WiFi throughput, and vice versa.

WiFi / LiFi throughput

IEEE Jack Neubauer Memorial Award

We have received the Jack Neubauer Memorial Award for our paper "Bit Error Probability of SM-MIMO Over Generalized Fading Channels",  as the Best System paper, published in the IEEE Transactions on Vehicular Technology in March 2012.

Jack Neubauer Memorial Award of IEEE Vehicular Technology Society, September 2015

How Li-Fi is different from RF wireless

Based on Maxwell’s theory of electromagnetics, the light and radio propagation follow the same rules of physics. However, the optical waves have significantly smaller wavelength compared to radio waves. This is particularly important when an approximation of Maxwell’s theory is required.

Edinburgh Balmoral Clock Tower

Optical Wireless Communication: The rebirth of an ancient technology

When you pack a survival kit for disaster and emergency situations, what kind of tools would you include? I bet flashlight is one of them. Besides its obvious use, a flashlight can be toggled on and off to send Morse coded signals for requesting help and rescue.



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