LiFi-multicell eliminates interference, covers large areas

January 02, 2020 //By Jean-Pierre Joosting
LiFi-multicell eliminates interference, covers large areas
LiFi has significant advantages over WiFi, such as data-transmission speed and the data security it offers because light does not penetrate walls. But wide adoption is constrained primarily because of interference between devices using LiFi networks and its resulting poor performance in large areas.

Now, LiFi-multicell, a system developed CEA-Leti, is the first-ever smart interference orchestrator that automatically detects interference between lighting zones in networks and optimizes data transmission rates for each nearby device. The system also manages—asymmetrically and independently—uplink/downlink interference.

At CES 2020, CEA-Leti will demonstrate LiFi-multicell, which offers several advantages in addition to eliminating interference and supporting large-area coverage. These include uninterrupted connectivity for users moving in a network and fair allocation of resources between users who are experiencing interference and those who are not. The CEA-Leti technology is able to provide data-transmission rates up to 150 Mb/s over distances up to three meters by LED.

LiFi-multicell is the first-ever technology to enable massive rollout of LiFi, using a smart network orchestrator that can be hosted on any commercially available lightbulb. Typical applications include lighting manufacturers, Internet service providers, and smart-home stakeholders.

CEA-Leti researchers are working on additional smartmobility management features for LiFi-multicell. These will further increase data transmission speeds for users on the move and allow users  to benefit from the best access point. The goal is to work with a manufacturer to develop a system that targets market demand.

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