Chinese Optics Letters, Volume. 22, Issue 6, 060601(2024)
Superposed probabilistically shaped QAM constellation design based on nonlinear coding for MIMO visible light communication systems
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Fig. 1. Trellis diagram for nonlinear coding with α = 1/5 and A = 0.
Fig. 2. Proposed superposed QAM constellation schemes. (a) 36QAM and (b) 40QAM.
Fig. 4. Measured BER performances for different Vpp2 values when Vpp1 was equal to 500 mV.
Fig. 5. Measured BER performances for different Vpp1 values when Vpp2 was equal to 900 mV.
Fig. 7. Comparison of BER performance with and without Viterbi decoding algorithm.
Fig. 9. Dynamic ranges of different superposed constellation schemes. (a) 40QAM, (b) 36QAM, and (c) 32QAM.
Table 1. MED of the Superposed Constellation
View tableView in ArticleTable 1. MED of the Superposed Constellation
Scheme MED Superposed 32QAM constellation 0.707 Superposed 36QAM constellation 0.761 Superposed 40QAM constellation 0.749
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Xinyue Guo, Meixia Lu, Qibin Zheng, "Superposed probabilistically shaped QAM constellation design based on nonlinear coding for MIMO visible light communication systems," Chin. Opt. Lett. 22, 060601 (2024)
Paper Information
Category: Fiber Optics and Optical Communications
Received: Sep. 6, 2023
Accepted: Feb. 18, 2024
Posted: Feb. 6, 2024
Published Online: Jun. 18, 2024
The Author Email: Qibin Zheng (qbzheng@usst.edu.cn)
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