Abstract

In this work, we study probabilistic shaping (PS) for optical wireless communications and apply the technique to wavelength division multiplexing (WDM) based visible light communication (VLC). The performance of the proposed scheme is validated with an experimental demonstration. The experimental set up uses lenses to collimate the light beam for triple LEDs. The system parameters of the WDM based VLC system are then optimised, the channel response measured, and PS based symbols are allocated to the individual orthogonal frequency division multiplexing (OFDM) subcarriers. For the channel conditions under consideration, PS resulted in a near Shannon capacity transmission rate of 10.81 Gb/s. Comparatively, the PS resulted in 25% higher transmission rate than the widely used adaptive bit-power loading algorithm under the same channel conditions.

Achievable information rate enhancement of visible light communication using probabilistically shaped OFDM modulation

Chenhui Xie, Zexin Chen, Songnian Fu, Wu Liu, Zhixue He, Lei Deng, Ming Tang, and Deming Liu
Opt. Express 26(1) 367-375 (2018)

Entropy loading for capacity maximization of RGB-based visible light communications

Pedro A. Loureiro, Vinicius N. H. Silva, Maria C. R. Medeiros, Fernando P. Guiomar, and Paulo P. Monteiro
Opt. Express 30(20) 36025-36037 (2022)

113Gbps rainbow visible light laser communication system based on 10λ laser WDM emitting module in fiber-free space-fiber link

Zhiteng Luo, Xianhao Lin, Zhilan Lu, Jianyang Shi, Chao Shen, Ziwei Li, Junwen Zhang, Zhixue He, Hui Chen, Shaohua Yu, and Nan Chi
Opt. Express 32(2) 2561-2573 (2024)

Demonstration of flexible access in a rate-adaptive visible light communication system with constellation probabilistic shaping

Sizhe Xing, Fangchen Hu, Guoqiang Li, Junwen Zhang, Nan Chi, Zhixue He, and Shaohua Yu
Opt. Express 29(21) 34441-34451 (2021)

Experimental investigation of 16.6 Gbps SDM-WDM visible light communication based on a neural network receiver and tricolor mini-LEDs

Xin Liu, Zixian Wei, Mutong Li, Lei Wang, Zhongxu Liu, Changyuan Yu, Lai Wang, Yi Luo, and H. Y. Fu
Opt. Lett. 46(12) 2888-2891 (2021)