Development data transmission using visible light communication (VLC) system (LI-FI)

Harry, Harith Hakimi (2023) Development data transmission using visible light communication (VLC) system (LI-FI). Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays, the radio spectrum is a finite resource that is quickly depleting. The government is considering repurposing different radio frequencies, including the satellite communications bands next to GPS, due to a need for commercial spectrum to promote broadband wireless communications. As a result, Li-Fi is an alternative to avoid this problem. VLC or Li-Fi stands for Visible Light Communication. VLC, also known as Li-Fi, is a data communication technology that employs a visible light source as a signal transmitter, air as a transmission medium, and a signal-receiving device. The transmitters commonly Light Emitting Diodes (LEDs), while the receiver's main element is a photodetector, usually a photodiode. In shortrange applications, it can complement radio waves with VLC or Li Fi to achieve higher data rates and wider bandwidth. This project is to make a transmission system that uses Li-Fi as a transmitter medium combined with Arduino as the microcontroller. This project will have two part, which is the source part and the receiver part. The result of this project is that when the transmitter sends messages to text, the receiver can read the message that comes from the transmitter without data loss. Also, the receiver can display the message on LCD that it received from the transmitter. VLC or Li-Fi is an alternative to replace WiFi.

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