Multi-Gigabit/s LiFi Networking for 6G

We show that the optical spectrum can be used to build terabit per second (Tbps) secure wireless access networks. Two fundamental advantages of this spectrum are: 1) there are off-the-shelf transmitter and receiver devices that can be used today, and 2) this spectrum is completely unregulated and free. We conclude that in 6G wireless access networks we will witness a paradigm shift from RF to optical.