Non-Data-Aided Cycle Slip Self-Correcting Carrier Phase Estimation for QPSK Modulation Format of Coherent Wireless Optical Communication System

doi:10.1109/access.2019.2934224

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	Non-Data-Aided Cycle Slip Self-Correcting Carrier Phase Estimation for QPSK Modulation Format of Coherent Wireless Optical Communication System
	Y.Wang; Z.Y.Wu; X.L.Li; T.W.Geng; S.Ma; L.Li; S.J.Gao; Y.T.Li
	2019
发表期刊	Ieee Access
ISSN	2169-3536
卷号	7 页码:110451-110462
摘要	In this study, we propose a non-data-aided algorithm of the cycle slip self-correcting carrier phase estimation (CSSC-CPE) which mitigates the cycle slips caused by blind CPE in the coherent wireless optical communication (WOC) system. The CSSC-CPE uses the output of CPE for cumulative averaging and selects the difference delta between two cumulative average segments as the discriminant parameter. The location and direction of cycle slips are determined by identifying the position and sign of the peak value of delta. The optimal thresholds for cycle slip detection could be derived from the probability density function (PDF) of delta obtained by calculation and deduction. Finally, numerical simulations and indoor experiments are carried out. The results show that CSSC-CPE can effectively eliminate cycle slips under weak turbulence condition. Compared with relative non-data-aided cycle slip correction algorithms, the CSSC-CPE achieves a better performance in suppressing the phase noise generated by atmospheric turbulence and laser linewidth, which enhances the accuracy of the cycle slip identification and lowers the SNR requirement when the cycle slip is not allowed.
关键词	Coherent detection,cycle slip,free-space optical communication,phase,estimation,performance,algorithms,capacity,Computer Science,Engineering,Telecommunications
DOI	10.1109/access.2019.2934224
收录类别	SCI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62971
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y.Wang,Z.Y.Wu,X.L.Li,et al. Non-Data-Aided Cycle Slip Self-Correcting Carrier Phase Estimation for QPSK Modulation Format of Coherent Wireless Optical Communication System[J]. Ieee Access,2019,7:110451-110462.
APA	Y.Wang.,Z.Y.Wu.,X.L.Li.,T.W.Geng.,S.Ma.,...&Y.T.Li.(2019).Non-Data-Aided Cycle Slip Self-Correcting Carrier Phase Estimation for QPSK Modulation Format of Coherent Wireless Optical Communication System.Ieee Access,7,110451-110462.
MLA	Y.Wang,et al."Non-Data-Aided Cycle Slip Self-Correcting Carrier Phase Estimation for QPSK Modulation Format of Coherent Wireless Optical Communication System".Ieee Access 7(2019):110451-110462.

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