Análisis de tecnología Li-fi como comunicación por luz visible (VLC) y su integración al internet de las cosas (IOT)

Abstract

In this academic article, Li-fi technology was analyzed as an alternative to conventional wireless radio frequency (RF) communications, and a prototype for transmitting and receiving data with OOK modulation was designed with a communication application in hostile spaces obtaining data such as temperature and humidity and its integration into the internet of things (IoT) through the ThingSpeak platform. With this investigation, several characteristics were determined and its large bandwidth (available 670 GHz) was selected as the main one without the need for licenses ranging from 400 nm to 700 nm wavelength (λ), which does not interfere with the rest of the RF signals. The design of the prototype was carried out with two Raspberry Pi with its SPI module for both the transmitting and receiving equipment for data processing in which 4 MHz bandwidth results, 975 Kbps transmission speed and mathematical modeling mode were obtained the BER (Bit Error Rate) vs. P (Power) of the led.