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Optical-spatial-summing-based NOMA with fine-grained power allocation for VLC-enabled IoT applications

机译:基于光空间求和的NOMA,具有vLC的IOT应用程序的细粒度功率分配

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摘要

In this Letter, we propose and demonstrate a practical optical-spatial-summing-based non-orthogonal multiple access (OSS-NOMA) technique for visible light communication (VLC) systems. This technique is innovative in adopting OSS in that the transmitter of OSS-NOMA VLC can be built upon commercial illuminating light emitting diodes (LEDs), free of LEDs' harmful nonlinearity. Unlike conventional NOMA VLC using analog components such as digital-to-analog converters and bias-T in the transmitter side, OSS-NOMA exploits only digital control signals to drive a LED array in forming optical power superposition for NOMA signals. We demonstrate that by simply switching different amounts of LED chips on or off, the proposed OSS-NOMA transmitter can deliver a fine-grained power allocation ratio ranging from 0.01 to one for two users. The implemented OSS-NOMA VLC prototype leveraging commercial components can achieve low bit error rates of <= 3.1 x 10(-3) for two users at a data rate of 800 kbps, confirming the promising potential of this novel OSS-NOMA VLC for Internet of Things (IoT) applications. (C) 2020 Optical Society of America
机译:在这封信中,我们提出并展示了一种用于可见光通信(VLC)系统的基于实际的光学空间求和的非正交多址(OSS-NOMA)技术。该技术在采用OS中是创新性的,因为OSS-NOMM VLC的发射机可以在商业照明发光二极管(LED)上,而不是LED的有害非线性。与传统的NOMM VLC不同,使用模拟组件,例如数字到模拟转换器和发射器侧的偏置 - T,OSS-NOMA仅利用数字控制信号来驱动LED阵列,以形成NOMA信号的光学功率叠加。我们证明,通过简单地开启或关闭不同量的LED芯片,所提出的OSS-NOMA发射器可以为两个用户提供0.01至1的细粒型电力分配比。利用商业组件的实现的OSS-NOMM VLC原型可以以800kbps的数据速率实现两个用户的低位误差率为<= 3.1 x 10(-3),确认这部新颖的OSS-NOMA VLC用于互联网的有希望的潜力事物(物联网)应用程序。 (c)2020美国光学学会

著录项

  • 来源
    《Optics Letters》 |2020年第17期|共4页
  • 作者单位

    Sichuan Univ Coll Comp Sci Chengdu 610065 Peoples R China;

    Chongqing Univ Sch Microelect &

    Commun Engn Chongqing 400044 Peoples R China;

    Sichuan Univ Coll Comp Sci Chengdu 610065 Peoples R China;

    Sichuan Univ Coll Comp Sci Chengdu 610065 Peoples R China;

    Nanyang Technol Univ Sch Comp Sci &

    Engn Singapore 639798 Singapore;

    Sichuan Univ Coll Comp Sci Chengdu 610065 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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