北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2019, Vol. 42 ›› Issue (3): 79-82,126.doi: 10.13190/j.jbupt.2018-014

• 论文 • 上一篇    下一篇

一种适用于概率成形光传输系统的调制格式识别方法

李志沛1, 王曦朔1, 刘博2, 张琦1, 忻向军1   

  1. 1. 北京邮电大学 电子工程学院, 北京 100876;
    2. 南京信息工程大学 物理与光电工程学院, 南京 210044
  • 收稿日期:2019-01-24 出版日期:2019-06-28 发布日期:2019-06-20
  • 作者简介:李志沛(1992-),男,博士生,E-mail:lizhipei@sina.com;张琦(1973-),女,教授,博士生导师.
  • 基金资助:
    国家自然科学基金项目(61727817,61835002)

A Modulation Format Identification Method for Probabilistic Shaping Optical Transmission System

LI Zhi-pei1, WANG Xi-shuo1, LIU Bo2, ZHANG Qi1, XIN Xiang-jun1   

  1. 1. School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. Institute of Optoelectronics, Nanjing University of Information Science and Technology, Nanjing 210044, China
  • Received:2019-01-24 Online:2019-06-28 Published:2019-06-20

摘要: 针对使用概率成形技术和高阶调制格式的变速率光传输系统,提出了一种基于四次方特征值的盲调制格式识别方法.该方法利用接收端信号经过四次方运算后的快速傅里叶变换(FFT)峰值和方差值,能够实现偏振复用概率成形高阶调制格式的精确识别.在联合仿真平台上搭建了高速长距离相干光传输系统,验证了新方法的有效性.

关键词: 概率成形, 调制格式识别, 正交幅度调制, 快速傅里叶变换

Abstract: A blind modulation format identification method based on fourth-power eigenvalues is proposed for variable-rate optical transmission systems employing probabilistic shaping technology and high-order modulation formats. By using the fast Fourier transformation (FFT) peak value and variance after the received signal passes through fourth-power operation, accurate identification of high order modulation formats with probabilistic shaping and polarization multiplexing can be realized. A high-speed long-haul coherent optical transmission system is built on the platform of the joint simulation to verify the effectiveness of the method.

Key words: probabilistic shaping, modulation format identification, quadrature amplitude modulation, fast Fourier transformation

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