概括
本研究引入了一种新的二维分布匹配器 (2D-DM),以提高通信系统的非线性耐受性. 通过优化星座点,2D-DM增强了信号完整性,防止放大器和光纤非线性.
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
- 数字调制数字调制
背景情况:
- 概率形状的正方形振幅调制 (QAM) 易受非线性扭曲的影响.
- 现有的减轻QAM非线性性的方法可能有局限性.
研究的目的:
- 提出一个新的非线性耐受的二维分布匹配器 (2D-DM) 方案.
- 为了提高概率形状的QAM的非线性耐受性.
主要方法:
- 从概率形状的QAM星座中删除了角点.
- 将剩余的星座点分成层和符号.
- 采用一维造型器来生成相位和正方形元件,有效地创建二维造型器.
主要成果:
- 拟议的2D-DM方案证明了对功率放大器非线性性有所改善的耐受性.
- 该方案还显示,与传统的单维造型器相比,光纤非线性耐受性更强.
结论:
- 开发的2D-DM方案有效地提高了QAM系统中的非线性耐受性.
- 这种方法为强大的光通信提供了一个有希望的解决方案.
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