A Non-Data-Aided OSNR Estimation Algorithm for Coherent Optical Fiber Communication Systems Employing Multilevel Constellations

被引：20

作者：

Lin, Xiang ^{[1
]}

Dobre, Octavia A. ^{[1
]}

Ngatched, Telex M. N. ^{[1
]}

Li, Cheng ^{[1
]}

机构：

[1] Mem Univ, Fac Engn & Appl Sci, St John, NF A1B 3X5, Canada

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2019年 / 37卷 / 15期

关键词：

Cumulative distribution function; multilevel constellations; optical fiber communication; optical performance monitoring; optical signal-to-noise ratio; MODULATION CLASSIFICATION; JOINT OSNR;

D O I：

10.1109/JLT.2019.2921305

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The performance of existing moments-based nondata-aided (NDA) optical signal-to-noise ratio (OSNR) estimation approaches degrades greatly for coherent optical systems employing multilevel constellations. We propose a novel NDA OSNR estimation algorithm, which provides enhanced performance for such systems. The proposed algorithm utilizes the empirical cumulative distribution function of the signal's amplitude to extract the information on the noise variance. Analytical and extensive simulation results show the feasibility and advantages of the algorithm. For the studied systems employing multilevel constellations such as 8-quadrature amplitude modulation (QAM), 16-QAM, 32-QAM, and 64-QAM, the proposed algorithm attains the derived Cramer- Rao lower bound. Furthermore, it achieves a lower mean square error with significantly lower omplexity when compared to the conventional moments-based NDA estimation approach. Moreover, the impact of fiber nonlinearity is investigated with a five-channel Nyquist wavelength division multiplexing system, and the proposed algorithm outperforms the moments-based counterpart.

引用

页码：3815 / 3825

页数：11

共 48 条

[1] Low-Complexity Non-Data-Aided SNR Estimation for Multilevel Constellations
Wang, Wentao
Shen, Yuyao
Wang, Yongqing
IEEE COMMUNICATIONS LETTERS, 2020, 24 (01) : 113 - 116
[2] Robust Non-Data-Aided SNR Estimation for Multilevel Constellations via Kolmogorov-Smirnov Test
Fu, Yongming
Zhu, Jiang
Wang, Shilian
Zhai, Haitao
IEEE COMMUNICATIONS LETTERS, 2014, 18 (10) : 1707 - 1710
[3] Non-data-aided and universal cycle slip detection and correction for coherent communication systems
Gao, Yuliang
Ha, Elwin
Lau, Alan Pak Tao
Lu, Chao
Xu, Xiaogeng
Li, Liangchuan
OPTICS EXPRESS, 2014, 22 (25): : 31167 - 31179
[4] A non-data-aided SNR estimation algorithm for QAM signals
Xu, H
Li, ZQ
Zheng, H
2004 INTERNATIONAL CONFERENCE ON COMMUNICATION, CIRCUITS, AND SYSTEMS, VOLS 1 AND 2: VOL 1: COMMUNICATION THEORY AND SYSTEMS, 2004, : 999 - 1003
[5] A non-data-aided SNR estimation algorithm for QAM signals
Xu, H
Li, ZP
Zheng, H
2004 INTERNATIONAL CONFERENCE ON COMMUNICATION, CIRCUITS, AND SYSTEMS, VOLS 1 AND 2: VOL 1: COMMUNICATION THEORY AND SYSTEMS, 2004, : 103 - 107
[6] Non-Data-Aided SNR Estimation for Multiple Antenna Systems
Mohammadkarimi, Mostafa
Dobre, Octavia A.
Win, Moe Z.
2016 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM), 2016,
[7] Non-data-aided symbol synchronization algorithm for OFDM systems
Hu, Deng-Peng
Shi, Feng
Zhang, Er-Yang
Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology, 2011, 33 (03): : 739 - 743
[8] Non-Data-Aided Chromatic Dispersion Estimation for Nyquist Spectrally Shaped Fiber Transmission Systems
Wang, Junyi
Jiang, Xin
Weng, Yi
He, Xuan
Pan, Z.
2014 23RD WIRELESS AND OPTICAL COMMUNICATION CONFERENCE (WOCC), 2014,
[9] Digital non-data-aided symbol synchronization in optical coherent intradyne reception
Chang, Sun Hyok
Chung, Hwan Seok
Kim, Kwangjoon
OPTICS EXPRESS, 2008, 16 (19) : 15097 - 15103
[10] Non-Data-Aided PMD Monitoring for Optical OFDM Systems Using Low Bandwidth Coherent Receivers
Chen, S.
Anderson, T.
Hewitt, D.
Tran, A. V.
Skafidas, E.
2013 OPTICAL FIBER COMMUNICATION CONFERENCE AND EXPOSITION AND THE NATIONAL FIBER OPTIC ENGINEERS CONFERENCE (OFC/NFOEC), 2013,

← 1 2 3 4 5 →