Abstract

A fast-adaptive color-collaborative signal constellation (CCSC) is proposed for chromaticity-changeable multicolor multiple-input multiple-output (MIMO) visible light communications (VLC) systems. The design of CCSC aims at developing the constellation to minimize the average optical power with shaping-based lattice code. For multicolor VLC signals, we arrive at the fact that the optimum shape of the constellation bounding region is an inequilateral $N$-D simplex. With the densest lattice-packing structure, detailed design steps of CCSC are fully elaborated by lattice construction, effective point selection, and chromaticity adjustment. As CCSC has a low complexity, its constellation structure can adapt quickly to changeable chromaticity demands. Simulation results show that the performance of CCSC is better than enhanced standard color shift keying (CSK) and is close to iterative CSK modulation based on numerical search.

© 2019 Optical Society of America

Convex relaxation for illumination control of multi-color multiple-input-multiple-output visible light communications with linear minimum mean square error detection

Junming Dong, Yanyu Zhang, and Yijun Zhu
Appl. Opt. 56(23) 6587-6595 (2017)

Adaptive spatial-layout selection for massive multi-color visible light communications

Yumeng Zhang, Yi-Jun Zhu, Yan-Yu Zhang, and Wang Chao
Appl. Opt. 58(36) 9786-9796 (2019)

On the Coverage of Multiple-Input Multiple-Output Visible Light Communications [Invited]

Chen Chen, Wen-De Zhong, and Dehao Wu
J. Opt. Commun. Netw. 9(9) D31-D41 (2017)

Superposed constellation design for spatial multiplexing visible light communication systems

Manh Le-Tran and Sunghwan Kim
Opt. Express 28(25) 38293-38303 (2020)

Flipped superposed constellation design for MIMO visible-light communication systems

Xinyue Guo, Yuansha Yuan, Yiheng Zhao, and Nan Chi
Opt. Express 30(7) 11588-11603 (2022)