对于50公里的分散不补偿链路上的C频段IM/DD多载波信号的CD意识非直角DFT预编码
Optics express
|November 14, 2024
概括
一个新的颜色分散感知非直角离散里叶变换预编码 (CDA-NODFTP) 方案提高了比特错误率 (BER) 在强度调制和直接检测 (IM/DD) 系统中的性能. 与其他方法相比,CDA-NODFTP-FBMC方案显示出更高的接收器灵敏度.
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
- 光子学 是一个光子学.
背景情况:
- 颜色分散 (CD) 在强度调制和直接检测 (IM/DD) 系统中显著降低信号质量.
- 现有的预编码方案,如DFTP和NODFTP,无法在IM/DD多载体系统中充分解决CD问题.
- 分散无补偿链路对高速光学数据传输构成了挑战.
研究的目的:
- 提出和评估一种新的色谱分散感知非直角离散里叶变换预编码 (CDA-NODFTP) 方案.
- 为了提高CD受约束的IM/DD系统中多载波信号的比特错误率 (BER) 性能.
- 将CDA-NODFTP方案与使用OFDM和FBMC信号的现有方法进行比较.
主要方法:
- 开发一个包含自适应光谱压缩的CDA-NODFTP预编码方案.
- 在50公里的C频段分散无补偿链路上进行实验评估.
- 将CDA-NODFTP与使用90Gb/s的OFDM和FBMC信号的传统DFTP,NODFTP和非预编码方案进行比较.
主要成果:
- 与传统的DFTP和NODFTP方案相比,拟议的CDA-NODFTP方案显示出优越的BER性能.
- 使用自适应光谱压缩的CDA-NODFTP优于非预编码方案.
- 与CDA-NODFTP-OFDM和自适应位和功率负载 (ABPL) FBMC相比,CDA-NODFTP-FBMC实现了超过2dB的接收器灵敏度改进,BER为3.8×10−3.
结论:
- CDA-NODFTP方案有效地减轻了IM/DD多载体系统中的色谱分散.
- CDA-NODFTP-FBMC配置为分散无补偿链路提供了显著的性能优势.
- 这种方法提高了接收器的灵敏度,并使光通信系统的数据速率更高.
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