MLSE-assisted decision feedback equalizer for error-propagation suppression in high-speed IM-DD transmission systems

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外文摘要：We propose a trellis-compressed maximum likelihood sequence estimation[TC-MLSE]-assisted sliding-block decision feed-back equalizer[DFE]to suppress the error propagation resulting from the DFE in high-speed systems.We use an out-of-range detector to detect the end of burst errors from the DFE and activate the optional TC-MLSE to correct burst errors.We conduct experiments to transmit a 201-Gbit/s PAM-8 signal.The results show that the proposed method achieves a bit error rate of 3.65 x 10-3,which is close to that of MLSE.The optional MLSE is only activated when needed and processes 11.4％of the total symbols.Moreover,the proposed method compresses the maximum length of burst errors from 19 t0 5.

外文关键词：

intensity modulationdirect detectionsliding-block decision feedback equalizererror propagationmaximum likelihood sequence estimationout-of-range detector

作者：

周家豪、张静、赵雪、王芮、李劲江、胡少华、张倩武、杨奇、许渤、邱昆

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作者单位：

Key Laboratory of 0ptical Fiber Sensing and Communication,University of Electronic Science and Technology of China,Chengdu 611731,China

Key Laboratory of Specialty Fiber 0ptics and 0ptical Access Networks,Shanghai University,Shanghai 200444,China

School of 0ptical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China

基金：

National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)Open Fund of IPOC(BUPT)STCSMFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities

项目编号：

623011286187108262111530150IPOC2020A011SKLSFO2021-01ZYGX2020ZB043ZYGX2019J008

出版年：

2024

DOI：

10.3788/COL202422.050604

中国光学快报(英文版)

中国光学学会中国科学院上海光学精密机械研究所

中国光学快报(英文版)

CSTPCD

影响因子：1.305

ISSN：1671-7694

年,卷(期)：2024.22(5)