A Modulation Format Identification Method for Probabilistic Shaping Optical Transmission System

doi:10.13190/j.jbupt.2018-014

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2019, Vol. 42 ›› Issue (3): 79-82,126.doi: 10.13190/j.jbupt.2018-014

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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. 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

Abstract

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

CLC Number:

TN911.22

LI Zhi-pei, WANG Xi-shuo, LIU Bo, ZHANG Qi, XIN Xiang-jun. A Modulation Format Identification Method for Probabilistic Shaping Optical Transmission System[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2019, 42(3): 79-82,126.

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A Modulation Format Identification Method for Probabilistic Shaping Optical Transmission System

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