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W频段的RoF极化复杂化系统支持1048576 QAM与三角形-西格玛调制
Optics letters
|June 1, 2023
概括
这项研究引入了一种新的光子学辅助的W频段毫米波 (MMW) 射频光纤 (RoF) 系统,用于高阶方格振幅调制 (QAM) 信号. 该系统实现了高频谱效率和信号保真性,这对于先进的无线通信至关重要.
科学领域:
- 光子学 是一个光子学.
- 毫米波通信是指毫米波通信.
- 无线电在光纤技术上的技术
背景情况:
- 现有的无线电光纤 (RoF) 系统在高阶方格振幅调制 (QAM) 时面临低光谱效率和信号扭曲的问题.
- 通用公共无线电接口 (CPRI) 对先进的无线应用程序的频谱效率存在限制.
研究的目的:
- 开发和实验验证一个光子学辅助的W频段毫米波 (MMW) RoF系统,用于高阶QAM信号.
- 提高光谱效率,减少MMW RoF系统中的信号扭曲.
主要方法:
- 实现一个极化多重复合的信封检测系统.
- 集成量化噪声抑制的三角形-西格玛调制 (DSM) 来减轻扭曲.
- 对拟议系统的性能进行实验验证.
主要成果:
- 该系统成功传输了131072个QAM信号,满足了5G新无线电 (NR) 错误矢量大小 (EVM) 要求.
- 该系统传输了1048576个符合软决策值 (SD@20%) 的QAM信号.
结论:
- 拟议的光子辅助MMW RoF系统有效地解决了高阶QAM的光谱效率和扭曲挑战.
- 集成DSM显著提高了信号质量,为未来的无线网络提供了更高阶调制方案.
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