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International Journal of Advancements in Electronics and Electrical Engineering

A Comparative Study of Different Modulations for Visible Light Communications



Wireless technology is quickly developing, and is playing an increasing role in the lives of people throughout the world. Radio frequency communication is the current dominating limited wireless technology that is used in communication industry. Visible Light Communication (VLC) is developing and promising to overcome problems faced in RF communications due to its advantages such as license free and unlimited bandwidth .This project focuses on comparing different modulation schemes for VLC technology, which chosen to be Frequency Shift Keying (FSK) and On-Off Keying (OOK). The physical design for both modulations had to be conducted to perform the comparison. The design involved the receiver and the transmitter circuits. The main properties to be analyzed are the cost, bit error rate and the distance to see which modulation performs better. Due to many components used in FSK modulation, more money was spent compared to OOK modulation. Additionally, OOK modulation outperformed the FSK modulation in terms of the curve of bit error rate versus the distance as shown in this paper

No fo Author(s) : 3
Page(s) : 1-4
Electronic ISSN : 2319 - 7498
Volume 7 : Issue 1
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