Chinese Optics Letters, Volume. 19, Issue 4, 040601(2021)

Dimming control scheme based on hybrid LACO-SCFDM for visible light communications

Siqiao Li1, Tiantian Zhang2, Yaojun Qiao1、*, and Ji Zhou3
Author Affiliations
  • 1Beijing Key Laboratory of Space-Ground Interconnection and Convergence, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 2Institute of Electronic and Information Industry, China Center for Information Industry Development, Beijing 100876, China
  • 3Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou 510632, China
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    Figures & Tables(6)
    Schematic of the proposed HLACO-SCFDM dimming method.
    (a) BER characteristics of HLACO-SCFDM and HLACO-OFDM versus the scaling factor ρ with different spectral efficiencies. Inserts show the first-layer signal decoding constellations, respectively. (b) SNR on different subcarriers for points A and B.
    Analysis of spectral efficiency versus η for different layers of (a) HLACO-OFDM and (b) HLACO-SCFDM.
    Analysis of spectral efficiency versus η for HLACO-SCFDM, HLACO-OFDM, hybrid HACO-OFDM, DCO-OFDM, and AHO-SCFDM.
    • Table 1. Simulation Parameters

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      Table 1. Simulation Parameters

      ParametersValuesParametersValues
      Number of subcarriers256Signal bandwidth100 MHz
      Cyclic prefix16Low-pass filter bandwidth10 MHz
      Number of symbols512Noise power22.8dBm
      Training sequences10Target BER2×103
    • Table 2. Computational Complexity

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      Table 2. Computational Complexity

      Dimmable SchemeTransmitterReceiver
      HLACO-SCFDM(2·2L2)2LO(N)(4·2L5)2LO(Nlog2N)
      HLACO-OFDM[16](2·2L2)2LO(Nlog2N)(5·2L8)2LO(Nlog2N)
      AHO-SCFDM[18]32O(N)114O(Nlog2N)
      DCO-OFDM[17]O(Nlog2N)O(Nlog2N)
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    Siqiao Li, Tiantian Zhang, Yaojun Qiao, Ji Zhou. Dimming control scheme based on hybrid LACO-SCFDM for visible light communications[J]. Chinese Optics Letters, 2021, 19(4): 040601

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    Paper Information

    Category: Lasers, Optical Amplifiers, and Laser Optics

    Received: Sep. 10, 2020

    Accepted: Oct. 19, 2020

    Posted: Oct. 21, 2020

    Published Online: Feb. 22, 2021

    The Author Email: Yaojun Qiao (qiao@bupt.edu.cn)

    DOI:10.3788/COL202119.040601

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