The Performance Optimization of Visible Light Communication

  • Agha Yasir Ali Sir Syed University


Background/Objectives: Analyze the data rate, bit error rate (BER), flickering & bandwidth of Visible light communication (VLC) system.

Methods/Statistical analysis: The existing modulation scheme is modified and produces the trade-off between these parameters. The modified ON-OFF Keying (MOOK) is proposed in which the variation in the transmitted pulses is observed. The square and rectangular pulses are used to transmit zero and one bits respectively. The duty cycle of square pulse is increased to improve the flickering performance. Moreover, it utilized the bandwidth and deteriorates the BER performance. The differential MOOK (DMOOK) modulation scheme is also proposed in which the ON period of square pulse (zero bits) is removed. Therefore, the data rate of DMOOK is increased because the duration of zero bit pulse is decreasing. Similarly, the high bandwidth is utilized and BER performance deteriorates. All performance parameters are evaluated on Arduino based hardware VLC system. Findings: The trade-off between data rate, flickering performance, and BER is examined on Arduino controller. These performance parameters are compared by using existing modulation technique OOK and proposed modulation techniques MOOK and DMOOK. We conclude that the BER performance deteriorates by improving flickering performance and data rate of the VLC system.  Novelty/Applications: The purpose of all VLC systems is data communication and illumination without flickering. Therefore, the novel signaling techniques are investigated and performance parameters are compared to make the conclusion.
Electrical Engineering