• Optoelectronic Technology
  • Vol. 40, Issue 3, 222 (2020)
Feng LIU1,2, Xiyuan HE1,2, Daishun ZHENG1,2, Xiaobing CAO1,2, and Zhenrong ZHENG1,2
Author Affiliations
  • 1Shenzhen Eastfield Lighting Co., Ltd, Shenzhen Guangdong 586, CHN
  • 2College of Optical Science and Engineering,Zhejiang University, Hangzhou 31007, CHN
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    DOI: 10.19453/j.cnki.1005-488x.2020.03.014 Cite this Article
    Feng LIU, Xiyuan HE, Daishun ZHENG, Xiaobing CAO, Zhenrong ZHENG. High Speed VLC Technology Based on Spatial Distribution Feature of LED Array and Photovoltaic Cells Array[J]. Optoelectronic Technology, 2020, 40(3): 222 Copy Citation Text show less

    Abstract

    Silicon-based photovoltaic cell array panel (Si-PvCA), as a cost-effective universal visible light communication carrier, is increasingly concerned.However, its VLC bandwidth is limited by single-channel communication mode. Based on the analysis of its key factors, such as the physical structure, optoelectronic feature and circuit topology, a way to improve the signal-to-noise ratio (SNR) and implement the space division multiple access (SDMA)-multiple input multiple output (MIMO) based concurrent VLC was proposed by the utilization of its subdividing and reconstruction along with the spatial light distribution characteristics of LED array lighting.A possible way to develop VLC through LED array and Si-PvCA was provided.
    Gi=m+1Apd2πdi2cosm(i)Tsφig(φi)cosφi ()

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    Pr=Ptm+1Apd2πdi2cosm(i)Tsφig(φi)cosφi,                                                                              0φiφc0,  φi>φc                                                              ()

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    SNR=γ2PrSignal2σshot2+σthermal2+γ2PrISI2()

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    g(φi)=n2sin-2(φc),  0φiφc0        ,  φi>φc()

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    PrSignal=0Ti=1nrLEDhit Xtdt0i=1nrLEDhit Xtdt()

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    PrISI  =  Ti=1nrLEDhit X(t)dt0i=1nrLEDhit X(t)dt()

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    hi(t)=Gi×δt-dc  ,      0φiφc0     ,                     φi>φc       ()

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    v(ω)iPH(ω)2=RLCRS+jωL+RLC×RC1jωC0+RC1r+jωC +1RSH+1RS+jωL+RLC2()

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    RLC=11jωL0+RL+11jωC0+RC()

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    vd(ω)iPHd(ω)2=RCdRXd1rd+jωCd +1RSHd+1RXd2()

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    RXd=RSd+12jωCp+RCd()

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    Feng LIU, Xiyuan HE, Daishun ZHENG, Xiaobing CAO, Zhenrong ZHENG. High Speed VLC Technology Based on Spatial Distribution Feature of LED Array and Photovoltaic Cells Array[J]. Optoelectronic Technology, 2020, 40(3): 222
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