概括
使用双平行马赫-泽恩德调制器 (DP-MZM) 的新单侧带 (SSB) 调制方案消除了无线电光纤系统中的代码边缘时间转移. 这种优化的方法显著提高了传输距离和系统性能.
科学领域:
- 光电学是指光电子产品.
- 光学通信是指光学通信.
- 信号处理 信号处理
背景情况:
- 无线电过光纤 (RoF) 系统面临的挑战是由于分散而导致单侧带 (SSB) 调制的时间转移.
- 传统的SSB调制方案在长距离上难以保持信号完整性.
研究的目的:
- 提出一个新的SSB调制方案,以消除RoF系统中代码边的时间移动.
- 在RoF系统中提高SSB调制信号的性能和传输距离.
主要方法:
- 使用双平行马赫-泽恩德调制器 (DP-MZM) 来实现载波和+1级侧带的最佳分离.
- 基带信号调节2.5 Gb/s数据信号到SSB信号的+1级侧带.
- 载波和侧频段以0dB的载波对侧频段比率进行传输.
主要成果:
- 拟议的方案完全解决了分散引起的时间转移问题.
- 模拟显示Q系数为23.362和位误差率为4.207×10−127在73.453公里.
- 最大通信距离达到了135公里,比传统方法提高了270%,具有清晰的眼睛图.
结论:
- 新的SSB调制方案显著提高了RoF通信中的系统性能.
- 这种基于DP-MZM的优化方法可以大幅增加传输距离,同时保持信号质量.
相关概念视频
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