To improve the data transmission rate of the conventional point-to-point single input single output (SISO) visible light communication system, a multiple input multiple output (MIMO) visible light communication system is proposed. Considering the complexity of the receiver system, multiple input single output (MISO) visible light communication systems have attracted attention. This paper studies the MISO visible light communication system based on pulse amplitude modulation (PAM), and experimentally proves the advantages of this system in specific scenes. In addition, there are non-linear effects for key devices such as LED light sources and power amplifiers in visible light communication systems. Based on 2×1 MISO visible light communication system, this paper reports a novel equal probability coding mapping scheme for high-order PAM signals with two low-order PAM signals superposition in the optical domain. The system verification is performed through a net data-rate of 700 Mb/s transmission experiment through a red chip of RGB-LED, which proves the feasibility and superiority of this scheme in practice.
Two input one output visible light communication system based on pulse amplitude modulation
First published at:May 01, 2019
1 Zeng L B, O'Brien D C, Le Minh H, et al. High data rate multiple input multiple output (MIMO) optical wireless communications using white LED lighting[J]. IEEE Journal on Selected Areas in Communications, 2009, 27(9): 1654–1662. DOI:10.1109/JSAC.2009.091215
2 Mesleh R, Mehmood R, Elgala H, et al. Indoor MIMO optical wireless communication using spatial modulation[C]//Proceedings of 2010 IEEE International Conference on Communications, 2010: 1–5.
3 Yu Z H, Baxley R J, Zhou G T. Multi-user MISO broadcasting for indoor visible light communication[C]//Proceedings of 2013 IEEE International Conference on Acoustics, Speech and Signal Processing, 2013: 4849–4853.
4 Qian H, Yao S J, Cai S Z, et al. Adaptive postdistortion for nonlinear LEDs in visible light communications[J]. IEEE Photonics Journal, 2014, 6(4): 7901508. DOI:10.1109/JPHOT.2014.2331242
5 Wang C, Zhou Y J, Chi N. Research of LED's nonlinear distortion compensation algorithm in visible light communications[J]. China Light & Lighting, 2017(7): 9–15, 26. DOI:10.3969/j.issn.1002-6150.2017.07.002
王灿, 周盈君, 迟楠.可见光通信中抗非线性方法的比较研究[J].中国照明电器, 2017(7): 9–15, 26. DOI:10.3969/j.issn.1002-6150.2017.07.002
6 Zhang M J, Shi M, Wang F M, et al. 4.05-Gb/s RGB LED-based VLC system utilizing PS-Manchester coded Nyquist PAM-8 modulation and hybrid time-frequency domain equalization[C]//Proceedings of the Optical Fiber Communication Conference, 2017: 1–3.
National Natural Science Foundation of China Project (61571133) and National Key Research and Development Program of China (2017YFB0403603)
Get Citation: Shi Meng, Zhang Mengjie, Chi Nan. Two input one output visible light communication system based on pulse amplitude modulation[J]. Opto-Electronic Engineering, 2019, 46(5): 180306.
Previous: A feasibility study of using fiber-optic Raman spectrum system for fast diagnosis of gastric cancer
Next: Modal wavefront reconstruction to obtain Zernike coefficient with no cross coupling in lateral shearing measurement