A real-time VLC to UART protocol conversion system

Abstract

A real-time visible light communication (VLC) to universal asynchronous receiver/transmitter (UART) conversion system is made up of a transmitter with a light emitting diode (LED) and a receiver with a photodiode (PD), by which a VLC system is connected to traditional communication modes, and the data are transferred by wireless visible light. UART packets are converted to light packets by the modulation of a 10 kHz on-off-keying (OOK) light signal, and the data losses in the transportation are avoided by the protection of a data buffer mechanism. The experimental results reveal that the real-time VLC to UART conversion system can provide a real-time VLC transmission way for two UART devices in not less than 10 m at a baud rate not less than 19 200 Bd with stable ambient lighting at the same time.

References

[1] GrobeL., ParaskevopoulosA., HiltJ., SchulzD.. High-Speed Visible Light Communication Systems, IEEE Communications Magazine, 2013, 12: 60

[2] WangY., YangC., WangY., ChiN.. Optics Letters, 2014, 39: 1823

[3] LiuY., ZhengC.-T., LiY.-T.. Microwave and Optical Technology Letters, 2012, 54: 2248

[4] YehC.-H., LiuY.-L., ChowC.-W.. Optics Express, 2013, 21: 26192

[5] SuhY., AhnC.-H., KwonJ. K.. IEEE Photonics Technology Letters, 2013, 25: 1274

[6] YingC.-l., LuH.-h., yiC., ChengC.-j.. Optics Letters, 2015, 40: 3276

[7] HusseinA. T., ElmirghaniJ. M. H.. Journal of Lightwave Technology, 2015, 33: 3293

[8] SongJ., DingW., YangF., YangH., YuB., ZhangH.. IEEE Transactions on Broadcasting, 2015, 61: 301

[9] HuangW., GongC., XuZ.. Journal of Lightwave Technology, 2015, 33: 3041

[10] YANGA., WUY., KavehradM., NIG.. Wireless Communications, 2015, 4: 24

[11] Jian-zhiD., Xiao-huiC.. Optoelectronics Letters, 2014, 10: 459

[12] DengJ.-z., ChengX.-h., LiG.-j.. Journal of Optolectronics·Laser, 2013, 24: 454

[13] KwonJ. K.. IEEE Photonics Technology Letters, 2010, 22: 1455

[14] SlaimanI., TangT. B., HamidN. H.. Optics Communications, 2015, 345: 52

[15] PopoolaW. O., PovesE., HaasH.. Journal of Lightwave Technology, 2012, 30: 2948