Hao Ma, Q. Zhan, Ran Gao, Xishuo Wang, X. Xin, Dong Guo, Huan Chang, Feng Tian, Qinghua Tian, Xia Sheng, Yi Cui
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引用次数: 0
摘要
提出了一种适用于50Gb/s PAM4-PON系统的综合非线性滤波方案。该方案同时考虑了Volterra滤波器的前向符号和后向符号，并在Volterra滤波器后加入决策项，以更好地消除符号间干扰(ISI)。在20 km SSMF上进行了50Gb/s PAM4传输实验。结果表明，与Volterra滤波器相比，在HD-FEC阈值(3.8×10−3)下可以获得1.3 dB的链路功率增益。
A comprehensive nonlinear filter scheme for 50Gb/s PAM4-PON Systems
A comprehensive nonlinear filter scheme for 50Gb/s PAM4-PON systems is proposed in this paper. In our scheme, both the forward symbols and the backward symbols of the Volterra filter are considered and the decision term is added after the Volterra filter to better eliminate the inter-symbol interference (ISI). An experiment of 50Gb/s PAM4 transmission is demonstrated over 20 km SSMF. Results show that a link power gain of 1.3 dB can be obtained at the HD-FEC threshold (3.8×10−3) compared to the Volterra filter.
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