同时取消射频自我干扰和高频宽带即时接收,使用基于光学频率的光学低采样
Optics letters
|October 1, 2025
概括
本研究引入了基于光频 (OFC) 的低采样,用于先进的射频自我干扰取消 (RF SIC),从而实现更广泛的带宽接收. 一个光学路径匹配标准可以确保在带内全双重系统中成功恢复信号.
科学领域:
- 光学工程是指光学工程.
- 无线通信无线通信
- 信号处理 信号处理
背景情况:
- 连续波 (CW) 无线电频率自我干扰取消 (RF SIC) 对于带内全双频 (IBFD) 技术至关重要.
- 现有的方法难以即时接收高频宽带信号.
- 在基于光学频率 (OFC) 的接收中,错位的光学脉冲相可能导致取消失败.
研究的目的:
- 提出基于OFC的低采样技术,用于增强宽带RF SIC和信号接收.
- 为基于OFC的接收系统引入一种新的光路匹配标准.
- 将射频SIC理论扩展到基于OFC的系统,并验证新的传输架构.
主要方法:
- 开发了一个基于OFC接收的光路匹配标准.
- 设计了一个波长划分多重复合的通路传输架构.
- 采用基于OFC的低采样,用于宽带RF SIC.
主要成果:
- 实现的射频SIC深度为单调信号至少41.5dB,QPSK信号超过26dB (60Msps/s).
- 成功恢复了感兴趣的信号 (SOI) 星座,错误向量大小 (EVM) 低于16.8%.
- 在48MHz至9.98GHz频段的有效性已被证明.
结论:
- 拟议的基于OFC的低采样和光路匹配标准显著增强宽带RF SIC.
- 新的传输架构有效地满足光学和电路匹配要求.
- 该方法符合QPSK信号接收的3GPP标准,提升了IBFD的能力.
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