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基于光学域功率分配的无线电光纤链路中的非对角多重访问

Peng Li, Zheng Dai, Long Huang

|December 1, 2023

概括

本研究介绍了使用光电功率分配的无线电光纤 (RoF) 链路中的非直角多重访问 (NOMA). 这种方法增强了动态范围,并提高了错误向量大小 (EVM) 的性能.

科学领域:

光学通信是指光学通信.
无线网络无线网络无线网络
信号处理信号处理

背景情况:

非对角多重接入 (NOMA) 对于提高无线系统的频谱效率至关重要.
无线电光纤 (RoF) 技术为信号传输提供了高带宽和低延迟.
将NOMA与RoF集成在电源管理和信号完整性方面带来了挑战.

研究的目的:

为RoF链接提出和演示一种新的NOMA技术.
实施光学域功率分配 (OPA) 以提高信号质量.
为了增强动态范围,并减少RoF系统中的非线性.

主要方法:

在RoF发射器上使用两个频谱重叠的微波矢量信号实现NOMA.
用于调节光学载波的正交极化.
偏振控制器 (PC) 和用于光学功率分配 (OPA) 的偏振器.
数字信号处理 (DSP) 算法用于在接收器上去复数信号.

主要成果:

在光学域功率分配的RoF链接中成功演示了NOMA.
由于相同的输入微波矢量信号功率水平,减少了非线性.
通过光学功率控制实现了更大的动态范围.
改进了传输性能,由较低的错误向量大小 (EVM) 证明.

结论:

拟议的光学域功率分配NOMA技术有效地提高了RoF系统的性能.
减少非线性和增加动态范围有助于优越的信号传输质量.
开发的DSP算法成功地解复合了信号,验证了该方法.

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