Abstract

Superposed coded modulation (SCM) can provide considerable diversity coding gain in the multiple-input-single-output (MISO) visible light communication (VLC) system. In this paper, we proposed a new concept of SCM scheme at the overall spectrum efficiency (SE) of 5 bit/Hz, which is named as scalar SCM (S-SCM). S-SCM overcomes the defect that PAM based SCM cannot be applied to odd-order signals. Furthermore, two novel S-SCM schemes which are based on probabilistic constellation shaping (PCS) pulse amplitude modulation (PAM) and uniform quadrature amplitude modulation (QAM) are addressed in this publication, respectively. Compared to the performance of the two-dimension SCM (2D-SCM) schemes, experimental results proved that the S-SCM is superior to the 2D-SCM, whose operation range is at most 2.88 times that of 2D-SCM when adjusting the power ratio between two transmitters. Furthermore, S-SCM measured a transmission rate of 2.385 Gbps below the 3.8×10⁻³ forward error correction (FEC) threshold, which is the highest data rate in the MISO-VLC system to the best of our knowledge.

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)

Interleaved superposed-64QAM-constellation design for spatial multiplexing visible light communication systems

Xinyue Guo, Yuansha Yuan, Chao Pan, and Jiangnan Xiao
Opt. Express 29(15) 23341-23356 (2021)

A multiple-input-multiple-output visible light communication system based on VCSELs and spatial light modulators

Hai-Han Lu, Ying-Pyng Lin, Po-Yi Wu, Chia-Yi Chen, Min-Chou Chen, and Tai-Wei Jhang
Opt. Express 22(3) 3468-3474 (2014)

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)

Fast-adaptive color-collaborative constellation designs for multicolor multiple-input multiple-output visible light communications systems

Ye Xiao, Yi-Jun Zhu, Yan-Yu Zhang, and Zheng-Guo Sun
Appl. Opt. 58(6) 1433-1441 (2019)