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Nonlinearity-aware optoelectronic terahertz discrete multitone signal transmission with a zero-bias diode

机译：非线性感知光电Terahertz离散多仪信号传输零偏置二极管

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摘要

The terahertz band has been recognized as a promising candidate to support future rate-greedy applications such as 6G communications. Optoelectronic terahertz communications are beneficial for the realization of high-speed transmission. In this Letter, we propose and experimentally demonstrate an optoelectronic terahertz transmission system with intensity modulation and direct detection, where a discrete multitone (DMT) waveform with high-order quadrature amplitude modulation (QAM) is used. A zero-bias diode (ZBD) is used in the system as a simple, cost-effective direct detection terahertz receiver. A nonlinearity-aware digital signal reception routine is proposed to mitigate the nonlinear impairments induced by subcarrier-to-subcarrier beating interference from the ZBD. In this experiment, up to a 60 Gbit/s line rate 16QAM-DMT signal is successfully transmitted over a 3 m wireless link in the 310 GHz band, and the mean signal-to-noise ratio is improved by 3 dB with nonlinearity-aware signal processing routine. The advantageous features of such a scheme make it a promising solution for terahertz wireless communications. (C) 2020 Optical Society of America
机译：太赫兹频带已被公认为有希望的候选，以支持未来利率贪婪的应用，如6G通信。光电太赫兹通信是实现高速传输的益处。在这种信，我们提出和实验证明与强度调制和直接检测，其中使用离散多音频（DMT）波形与高阶正交幅度调制（QAM）的光电太赫兹传输系统。一个零偏置二极管（ZBD）在系统中作为一个简单的，具有成本效益的直接检测接收机太赫兹波使用。非线性感知的数字信号接收程序提出，以减轻从ZBD子载波到子载波跳动干扰引起的非线性损伤。在该实验中，由60 Gbit / s的线路速率16QAM-DMT信号通过在310 GHz频带3米的无线链路被成功传输，平均信噪比是由3分贝与非线性感知改进信号处理例行程序。这种方案的有利特征，使其成为太赫兹无线通信的有前途的解决方案。 （c）2020美国光学学会

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  • 来源
    《Optics Letters》 |2020年第18期|共4页
  • 作者

    Zhang Lu; Qiao Mengyao; Wang Shiwei; Lu Zijie; Zhang Le; Pang Xiaodan; Zhang Xianmin; Yu Xianbin;

  • 作者单位

    Zhejiang Univ Coll Informat Sci &

    Elect Engn Hangzhou 310027 Peoples R China;

    Zhejiang Univ Coll Informat Sci &

    Elect Engn Hangzhou 310027 Peoples R China;

    Zhejiang Univ Coll Informat Sci &

    Elect Engn Hangzhou 310027 Peoples R China;

    Zhejiang Univ Coll Informat Sci &

    Elect Engn Hangzhou 310027 Peoples R China;

    China Jiliang Univ Hangzhou 310018 Peoples R China;

    Royal Inst Technol SE-10044 Stockholm Sweden;

    Zhejiang Univ Coll Informat Sci &

    Elect Engn Hangzhou 310027 Peoples R China;

    Zhejiang Univ Coll Informat Sci &

    Elect Engn Hangzhou 310027 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;
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