LiFi uses light waves to transmit data through the air. Any conventional LED light fixture can be turned into an access point to connect communicaton devices to the network, such as laptops, cellphones, tablets and many other, regardless if portable or stationary.
Other than VLC (visible light communication), which is defined as a point to point connection between two devices, LiFi creates a full scale, light based network similar to radio frequency based
The electromagnetic spectrum suitable for LiFi communication ranges from 200 THz up to 800 THz, so both invisible (infrared) and visible portions of the light spectrum are used for data transmission.
This results in a significantly increased bandwidth compared to radio frequency spectrum (factor 2600). In the near future, that technology will reach its limits regarding available frequency bands, known as the „spectrum crunch“.
LiFi access points provide wireless access to the local network and at the same time act as general illumination units. The downstream is generated by the LEDs of the light fixture.
The connecting devices contain a sensor to receive the data stream as well as a transmitting unit (IR diode) to provide the upstream to the access point.
8 users and more can be connected per access point, and seamless handover between access points creates a connectivity experience which is known from conventional WiFi or cellphone networks.
The number of users per access point is rising rapidly, with the evolution of the LiFi technology.
No direct line of sight between sensor and access point is required, the data stream is maintained also by reflection from surfaces like walls and other objects.
In addition, full light intensity of the access point is not required for a connection. While the human eye cannot perceive illumination, the light source is still active and provides a signal bright enough to maintain the data stream.
Unlike radio waves, light waves are blocked by physical barriers like walls or shaded windows. This makes it possible to contain the signal in an enclosed area, minimizing the risk of network penetration and jamming.
LiFi saves energy by combining two functionalities: lighting and connectivity. The infrastructure needed for the LiFi data link is already there – the LED light installations.
Greater bandwidth, more speed – LiFi performance highly outranges WiFi in lab environment. We will bring this performance to the market and to your applications.
Radiowaves are present all over the world, penetrating and affecting live tissue. Density and coverage area of electromagnetic fields is rising constantly, to keep up with the demand for wireless communication – increasing electrosmog day by day. LiFi drastically reduces electrosmog. Light waves don‘t penetrate your body.