一个微波光子2×2IBFD-MIMO通信系统,带有窄带自我干扰取消
Ying Ma1, Fangjing Shi2, Yangyu Fan2
1School of Electronic Information Engineering, Xi'an Technological University, Xi'an 710032, China.
Micromachines
|May 25, 2024
概括
本研究介绍了一种微波光子自我干扰取消 (SIC) 方法,用于带内全双重多输入多输出 (IBFD-MIMO) 系统. 拟议的技术有效地减轻了自我干扰,从而实现了高质量的数据解调.
科学领域:
- 微波光子学 微波光子学
- 无线通信无线通信
- 信号处理 信号处理
背景情况:
- 带内全双倍多输入多输出 (IBFD-MIMO) 技术在频谱效率和数据吞吐量方面提供了显著的改进.
- 自干扰 (SI) 是IBFD-MIMO通信系统的一个主要挑战,特别是那些基于微波光子的通信系统.
- 现有的SI取消方法需要对窄带应用进行进一步优化.
研究的目的:
- 为窄带2x2IBFD-MIMO系统提出,模拟和分析一种新的微波光子自我干扰取消 (SIC) 方法.
- 解决微波光子IBFD-MIMO通信中的关键自我干扰问题.
- 为了实现高性能SI取消,以增强数据接收.
主要方法:
- 使用一个交叉器来创建一个带有频率转移的极化多重复合双光学频率,生成一个双通道参考干扰信号.
- 使用可编程频谱处理器进行精确的过,减弱和相位转移,以匹配自我干扰信号.
- 确保振幅和相位匹配,有效消除两个自我干扰信号.
主要成果:
- 实现了一个单频SIC深度超过45.8dB.
- 对于30MHz以下的带宽,窄带SIC深度大于32.7dB.
- 启用SIC.后4.7%的低误差向量大小 (EVM) 的4QAM信号的解调.
结论:
- 拟议的微波光子SIC方法在取消窄带IBFD-MIMO系统中的自我干扰方面非常有效.
- 这种技术促进了高保真度信号的接收,低EVM证明了这一点.
- 未来的工作可能涉及道扩展和进一步的系统性能优化.
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