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Co-GRU Enhanced End-to-End Design for Long-haul Coherent Transmission Systems by Zheng, Jiayu; Zhang, Tianhong; Wenjing, Yu; Zhou, Weiqin; Yang, Chuanchuan; Zhang, Fan is a scholarly article available to read on EtoBox.

What is Co-GRU Enhanced End-to-End Design for Long-haul Coherent Transmission Systems about?

In recent years, the end-to-end (E2E) scheme based on deep learning (DL) has been proposed as a potential scheme to jointly optimize the encoder and the decoder parameters of the optical communication system. Compared with conventional deep neural network (DNN) adopted in E2E design, center-oriented Gated Recurrent Unit (Co-GRU) network has the ability to learn and compensate for inter-symbol interference (ISI) with low computation cost while satisfying the gradient backpropagation (BP) condition. In this paper, the Co-GRU structure is adopted for both channel modeling and decoder implementation in E2E design for long-haul coherent wavelength division multiplexing (WDM) transmission systems, which can enhance the performance of general mutual information (GMI) and Q2-factor. For the E2E system with Co-GRU based decoder, the gain of GMI and Q2-factor are respectively improved 0.2 bits/sym and 0.48dB, compared to that of the conventional QAM system, for a 5-channel dual-polarization coherent system transmitting over 960km standard single mode fiber (SSMF). This work paves the way for further study of the application of the Co-GRU structure for both the data-driven channel modeling an

Author

Zheng, Jiayu; Zhang, Tianhong; Wenjing, Yu; Zhou, Weiqin; Yang, Chuanchuan; Zhang, Fan

Published

2023

Language

EN