Visible light communication (VLC) is a family of communication protocols which use visible light (electromagnetic radiation between 400-800THz, or 375-780nm) to transfer information. Light sources such as LEDs are used to send information, and receivers such as photodiodes, phototransistors and arrays of such (eg. cameras) are used as receivers.
- Amplitude Switch Keying (ASK)
- Phase Switch Keying (PSK)
- Frequency Switch Keying (FSK)
- On-Off Keying
Li-Fi is a VLC communication protocol which uses the ultraviolet, visible and infrared spectrum to transmit data at high speeds.
This work is licensed under a Creative Commons Attribution 4.0 International License .