概括
区块长度感知计数球形 (BA-ESS) 改进了光通信的概率形 (PS). 这种新方法提高了传输性能,特别是在短块长度上,优于ESS和OESS等现有技术.
科学领域:
- 光学通信是指光学通信的应用.
- 数字信号处理是数字信号处理.
背景情况:
- 概率造型 (PS) 对于高容量光学系统至关重要.
- 目前的方法,如恒定组合分布匹配 (CCDM),在短块长度下遭受率损失.
研究的目的:
- 介绍一个新的区块长度感知计数球形塑造 (BA-ESS) 算法.
- 优化PS用于不同块长度的高阶调制格式.
主要方法:
- 开发了具有静态 (BA-ESS-S) 和动态 (BA-ESS-D) 模式的 BA-ESS.
- BA-ESS-S用于短块,BA-ESS-D用于长块 (实时编码).
- 通过28个GBaud PS-64QAM模拟和8个GBaud PS-64QAM实验进行验证.
主要成果:
- BA-ESS在ESS和最佳ESS (OESS) 上显示出显著的OSNR收益.
- 在块长度40时,BA-ESS显示0.88dB (vs. ESS) 和0.34dB (vs. OESS) 的OSNR收益.
- 在区块长度20的实验结果显示,OSNR比ESS增加了0.97dB.
结论:
- BA-ESS有效地减少了PS中短块长度的速率损失.
- 适应模式切换提高了整体传输效率,并减少了存储的复杂性.
- BA-ESS代表了PS在高阶调制格式中的重大进步.
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