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<p>We have designed and implemented a D-band ultra-long-distance photon-assisted Radio over Fiber (RoF) transmission system, successfully demonstrating the wireless transmission of a 24 Gbit/s QPSK signal over a distance of 20&#xa0;km. By leveraging clustering algorithms and advanced offline digital signal processing (DSP) techniques, the system effectively mitigated noise, leading to significant signal quality restoration. The results indicate that, through optimization of both the system architecture and signal processing algorithms, the bit error rate (BER) was reduced to <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(1.22\times 10^{-4}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>1.22</mn> <mo>×</mo> <msup> <mn>10</mn> <mrow> <mo>-</mo> <mn>4</mn> </mrow> </msup> </mrow> </math></EquationSource> </InlineEquation>, and the product of transmission distance and data rate achieved 480 (Gbit/s)·km. This outcome has substantial implications for ultra-long-distance wireless transmission systems, offering novel insights and technical pathways for the design and implementation of long-range, high-capacity wireless communication systems. Furthermore, it contributes to the advancement of wireless communication technologies, facilitating their evolution toward higher performance and broader applicability in next-generation communication networks.</p>

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Transmission of 24 Gbps QPSK Signal Over 20-km Wireless Distance in D-Band Based on Cluster Decision Algorithm

  • 期刊论文

  • 发表日期：

    2026年2月20日

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  • Jiali Chen,
  • Jianjun Yu,
  • Qinyi Zhang,
  • Xiongwei Yang,
  • Mingxu Wang,
  • Weiping Li,
  • Chengzhen Bian,
  • Yi Wei,
  • Qiutong Zhang,
  • Luhan Jiang,
  • Xin Lu,
  • Sicong Xu,
  • Jingtao Ge,
  • Xianming Zhao,
  • Jianguo Yu,
  • Feng Zhao,
  • Wen Zhou,
  • Kaihui Wang,
  • Min Zhu,
  • Jiao Zhang

摘要

We have designed and implemented a D-band ultra-long-distance photon-assisted Radio over Fiber (RoF) transmission system, successfully demonstrating the wireless transmission of a 24 Gbit/s QPSK signal over a distance of 20 km. By leveraging clustering algorithms and advanced offline digital signal processing (DSP) techniques, the system effectively mitigated noise, leading to significant signal quality restoration. The results indicate that, through optimization of both the system architecture and signal processing algorithms, the bit error rate (BER) was reduced to \(1.22\times 10^{-4}\) 1.22 × 10 - 4 , and the product of transmission distance and data rate achieved 480 (Gbit/s)·km. This outcome has substantial implications for ultra-long-distance wireless transmission systems, offering novel insights and technical pathways for the design and implementation of long-range, high-capacity wireless communication systems. Furthermore, it contributes to the advancement of wireless communication technologies, facilitating their evolution toward higher performance and broader applicability in next-generation communication networks.