相关实验视频
Updated: Jan 17, 2026

07:45
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
11.3K
概括
简化的Turbo等分器通过减轻低成本设备和色谱分散 (CD) 的符号间干扰 (ISI) 来增强50G被动光网络 (PON). 这一创新提高了接收器的灵敏度,使50G PON更适合成本敏感的应用.
科学领域:
- 电信工程 电信工程 电信工程
- 光学网络 光学网络
- 数字信号处理 数字信号处理
背景情况:
- 50G被动光学网络 (PON) 允许使用低成本设备实现具有成本效益的实现,但由于带宽有限而面临性能下降.
- 在O频段的色色分散 (CD),虽然低,但在较长距离 (例如40公里) 上累积影响50G开关键信号.
- 符号间干扰 (ISI) 源于设备和CD的限制,阻碍了位误差比率 (BER) 的性能.
研究的目的:
- 为50G PON.提出一个简化的Turbo equalizer,使用一个最大日志最大后期 (Max-Log-MAP) 模块.
- 为了解决带宽有限的低成本设备和累积色彩分散引起的ISI.
- 与传统的Log-MAP模块相比,以减少计算复杂性.
主要方法:
- 实现了一个简化的Turbo等分器与一个Max-Log-MAP模块.
- 将复杂的对数和指数计算替换为等分器中的简单比较.
- 在0公里,20公里和40公里接入场景中对等器性能进行实验评估.
主要成果:
- 马克斯-Log-MAP模块显著降低了计算复杂性,而不会造成性能损失.
- 获得了大约0.1dB (0km),0.25dB (20km) 和0.5dB (40km) 的接收器灵敏度改进.
- 简化的Turbo均衡器有效地补偿了ISI在带宽有限的50G PON中.
结论:
- 简化的Turbo equalizer是一个有前途的解决方案,用于提高带宽有限的50G PON的性能.
- 这种方法提供了一种实际的方法来克服在成本敏感的光网络部署中存在的ISI挑战.
- 拟议的等分器有助于在高达40公里的要求高的接入场景中部署50G PON.
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