Abstract

In this paper, a power switched, baseband modulation technique for visible light communications (VLC) is proposed and a theoretical model is constructed. It is shown that this technique, called single edge position modulation (SEPM), offers the unique performance characteristic that the communication properties reliability and power and spectral efficiency are invariable over a wide range of dimming levels. It is demonstrated that dimming robustness is obtained by increasing the number of bits per symbol. SEPM is compared with contemporary used baseband power switched modulation techniques for VLC that support dimming. The number of bits per symbol can be chosen to make a compromise between the dimming range over which reliability robustness is obtained on one hand, and the level of power and spectral efficiency on the other hand.

© 2016 OAPA

Performance of dimming control scheme in visible light communication system

Zixiong Wang, Wen-De Zhong, Changyuan Yu, Jian Chen, Chin Po Shin Francois, and Wei Chen
Opt. Express 20(17) 18861-18868 (2012)

THO-OFDM scheme for visible light communication with noise suppression and dimming control

Yibin Li, Zixian Wei, Zhaoming Wang, Amjad Ali, Qian Li, and H. Y. Fu
Opt. Lett. 47(19) 5180-5183 (2022)

Capacity analysis for pulse amplitude modulated visible light communications with dimming control

Jin-Yuan Wang, Jun-Bo Wang, Nuo Huang, and Ming Chen
J. Opt. Soc. Am. A 31(3) 561-568 (2014)

Dimming-discrete-multi-tone (DMT) for simultaneous color control and high speed visible light communication

Jiun-Yu Sung, Chi-Wai Chow, and Chien-Hung Yeh
Opt. Express 22(7) 7538-7543 (2014)

Combining Illumination Dimming Based on Pulse-Width Modulation With Visible-Light Communications Based on Discrete Multitone

G. Ntogari, T. Kamalakis, J. W. Walewski, and T. Sphicopoulos
J. Opt. Commun. Netw. 3(1) 56-65 (2011)