Chinese Journal on Internet of Things ›› 2022, Vol. 6 ›› Issue (3): 14-22.doi: 10.11959/j.issn.2096-3750.2022.00275

• Topic: IoT and Wireless Optical Communication • Previous Articles     Next Articles

Exploring the nonlinear coded superposed modulation MISO visible light communication system

Zengyi XU1,2,3, Wenqing NIU1,2,3, Hui CHEN4, Zhixue HE4, Nan CHI1,2,3   

  1. 1 Key Laboratory of EMW Information, Fudan University, Shanghai 200433, China
    2 Shanghai Engineering Research Center of Low-Earth-Orbit Satellite Communication and Applications, Shanghai 200433, China
    3 Shanghai Collaborative Innovation Center of Low-Earth-Orbit Satellite Communication Technology, Shanghai 200433, China
    4 Peng Cheng Laboratory, Shenzhen 518055, China
  • Revised:2022-06-15 Online:2022-08-05 Published:2022-08-08
  • Supported by:
    The National Natural Science Foundation of China(61925104);The National Natural Science Foundation of China(62031011);The National Natural Science Foundation of China(62074072);The China National Postdoctoral Program for Innovative Talents(BX2021082);The China Postdoctoral Science Foundation(2021M700025);The Major Key Project of Peng Cheng Laboratory(PCL2021A14)


The light-emitting diode (LED) based visible light multi-input single-output (MISO) system usually suffers from the nonlinearity in LED and its incoherent nature in emission.Adopting precoding would alleviate this limitation at comparatively lower cost.Existing researches usually apply the same coding scheme to all the channels.An asymmetric coding scheme was proposed, which nonlinearly encodes one of the two channels in a MISO system.This solution enlarges the dynamic range of the uncoded channel at the cost of a higher bit error ratio (BER) in the coded one.When the BER threshold is set at 3.8×10-3, the uncoded channel gains a dynamic range 30% larger than that of the coded one.If this solution is combined with flexible forward error correction redundancy, it would allow the system to adapt to varying channel condition while still maintaining the communication in both channels.This research would be beneficial in the study on indoor or underwater visible light communication (VLC) system.

Key words: VLC, nonlinear coding, superposed modulation, MISO

CLC Number: 

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