Comparative Study of Frequency-based Modulations for Visible Light Communication

• Published in: 2024 IEEE Wireless Communications and Networking Conference (WCNC) pp. 1 - 6
• Main Authors: Gutema, Tilahun Z., Chen, Jianhui, Adiono, Trio, Popoola, Wasiu O.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 21-04-2024
• Subjects: Bandwidth; Chirp modulation; Energy efficiency; Frequency shift chirp modulation (FSCM); Frequency shift keying; frequency shift keying (FSK); low power/rate wireless network; Performance evaluation; Power capacitors; visible light communication (VLC); Wireless communication
• ISSN: 1558-2612
• DOI: 10.1109/WCNC57260.2024.10571121

This work presents a comparative study of frequency-based modulation techniques for visible light communication (VLC). The study focuses on frequency shift keying (FSK) and frequency shift chirp modulation (FSCM) schemes, considering their performance in bandwidth-limited channels. FSCM exhibits superior performance over FSK in scenarios characterised by bandwidth limitations and frequency-selective channels, making it an energy-efficient choice. In two experiments conducted in free-space and underwater channels, FSCM yielded higher data rates with lower energy requirements than FSK. These results corroborate the simulation findings of performance in band-limited channels.