Clock Recovery Based on Adaptive Phase Error Detection for Coherent Optical Transmission Systems

Xiaoyuan Niu, Yongjun Wang, Xinyu Liu, Hui Xu, Yucheng Pan, Jun Li, Xiangjun Xin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Traditional clock recovery techniques rely on Gardner for phase error detection to recover the original signal. An adaptive phase splitting detection technique is proposed by joint channel equalization in this paper. The loop judges the current error by the error of the previous moment, reduces the phase error jitter, and improves the stability of the system. In addition, the algorithm works well for the same phase of adjacent symbols through phase splitting techniques. In fiber channel, this scheme is more suitable for the case of small roll-off factor (ROF). Simulation results show that the algorithm is suitable for signals modulated by MQAM. The algorithm performs very well even when the ROF approaches 0.

Original languageEnglish
Title of host publication2019 18th International Conference on Optical Communications and Networks, ICOCN 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728127644
DOIs
Publication statusPublished - Aug 2019
Externally publishedYes
Event18th International Conference on Optical Communications and Networks, ICOCN 2019 - Huangshan, China
Duration: 5 Aug 20198 Aug 2019

Publication series

Name2019 18th International Conference on Optical Communications and Networks, ICOCN 2019

Conference

Conference18th International Conference on Optical Communications and Networks, ICOCN 2019
Country/TerritoryChina
CityHuangshan
Period5/08/198/08/19

Keywords

  • Adaptive phase error detection
  • Channel equalization
  • Coherent optical communication
  • Phase splitting timing recovery

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