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首页> 外文期刊>Optical engineering >Visible light communications using predistortion signal to enhance the response of passive optical receiver
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Visible light communications using predistortion signal to enhance the response of passive optical receiver

机译：使用预失真信号的可见光通信可增强无源光接收器的响应

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摘要

Traditional visible light communication (VLC) uses positive-intrinsic-negative photodiode (PD) or avalanche PD as the optical receivers (Rx). We demonstrate using a solar cell as the VLC Rx. The solar cell is flexible and low cost and converts the optical signal into an electrical signal directly without the need of external power supply. In addition to acting as the VLC passive Rx, the converted electrical signal from the solar cell can charge up the battery of the Rx nodes. Hence, the proposed scheme can be a promising candidate for the future Internet of Things network. However, a solar cell acting as a VLC Rx is very challenging, since the response of the solar cell is limited. Here, we propose and demonstrate using predistortion to significantly enhance the solar cell Rx response for the first time up to the authors' knowledge. Experimental results show that the response of the solar cell Rx is significantly enhanced; and the original 2-kHz detection bandwidth of the solar cell can be enhanced by 250 times for receiving 500-kbit/s VLC signal at a transmission distance of 1 m. The operation principle, the generated voltage by the solar cell, and the maximum data rates achieved at different transmission distances are also studied.
机译：传统的可见光通信（VLC）使用正本征负光电二极管（PD）或雪崩PD作为光接收器（Rx）。我们演示了将太阳能电池用作VLC Rx。该太阳能电池灵活且成本低廉，无需外部电源即可直接将光信号转换为电信号。除了充当VLC无源Rx之外，来自太阳能电池的转换后的电信号还可以为Rx节点的电池充电。因此，提出的方案可以成为未来物联网网络的有希望的候选者。然而，由于太阳能电池的响应受到限制，因此充当VLC Rx的太阳能电池非常具有挑战性。在这里，我们提出并演示了使用预失真技术来首次显着增强太阳能电池Rx响应的程度，这是作者所知。实验结果表明，太阳能电池Rx的响应显着增强。可以以1 m的传输距离接收500 kbit / s VLC信号，将太阳能电池的原始2 kHz检测带宽提高250倍。还研究了工作原理，太阳能电池产生的电压以及在不同传输距离下获得的最大数据速率。

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  • 来源
    《Optical engineering》 |2016年第1期|010501.1-010501.3|共3页
  • 作者

    Yang Liu; Hung-Yu Chen; Kevin Liang; Liang-Yu Wei; Chi-Wai Chow; Chien-Hung Yen;

  • 作者单位

    Philips Electronics Ltd., N. T., Hong Kong;

    National Chiao Tung University, Department of Photonics and Institute of Electro-Optical Engineering, Hsinchu 30010, Taiwan;

    National Chiao Tung University, Department of Photonics and Institute of Electro-Optical Engineering, Hsinchu 30010, Taiwan;

    Philips Electronics Ltd., N. T., Hong Kong,National Chiao Tung University, Department of Photonics and Institute of Electro-Optical Engineering, Hsinchu 30010, Taiwan;

    National Chiao Tung University, Department of Photonics and Institute of Electro-Optical Engineering, Hsinchu 30010, Taiwan;

    Feng Chia University, Department of Photonics, Taichung 40724, Taiwan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    optical communications; visible light communication; optical wireless communication; passive optical receiver;

    机译：光通信;可见光通讯;光学无线通信;无源光接收器;

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