Multidimensional Multiplexed Coherent Transmission System Based on Joint Time-Frequency Domain Data-Assisted MIMO Equalization

LIU Bo; WANG Chen; TAN Yu-xuan; WANG Kai-hui; DING Jun-jie; ZHU Bo-wen; TIAN Feng; SHEN Lei; ZHANG Lei; WANG Rui-chun; YAN Chang-kun; CHEN Wei-zhang; YE Bing; REN Jian-xin; LI Fan; DENG Lei; LI Jian-ping; QIN Yu-wen; LI Chao-hui; XIN Xiang-jun; YU Jian-jun

doi:10.12263/DZXB.20221393

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Multidimensional Multiplexed Coherent Transmission System Based on Joint Time-Frequency Domain Data-Assisted MIMO Equalization

PAPERS | 更新时间：2025-12-11

- Multidimensional Multiplexed Coherent Transmission System Based on Joint Time-Frequency Domain Data-Assisted MIMO Equalization
- ACTA ELECTRONICA SINICA Vol. 52, Issue 5, Pages: 1553-1561(2024)
- 作者机构：
  
  1.北京邮电大学,北京 100876
  2.复旦大学信息科学与工程学院,上海 200433
  3.南京信息工程大学,江苏南京 210044
  4.长飞光纤光缆股份有限公司,湖北武汉 430073
  5.中兴通讯,北京 100971
  6.中山大学,广东广州 510275
  7.华中科技大学,湖北武汉 430074
  8.广东工业大学,广东广州 510006
- 作者简介：
- 基金信息：
  
  National Key Research and Development Program of China(2018YFB1800905);National Natural Science Foundation of China(61935005;61720106015;61835002;62127802)
- DOI：10.12263/DZXB.20221393
  CLC： TN929.11;
- Received：15 December 2022，
  
  Revised：2023-04-06，
  
  Published：25 May 2024
- 稿件说明：
移动端阅览
刘博,王晨,谭宇璇,等. 基于时频域联合数据辅助MIMO均衡算法的多维度复用千公里级相干传输系统[J]. 电子学报,2024,52(05):1553-1561.

LIU Bo, WANG Chen, TAN Yu-xuan, et al. Multidimensional Multiplexed Coherent Transmission System Based on Joint Time-Frequency Domain Data-Assisted MIMO Equalization[J]. Acta Electronica Sinica, 2024, 52(05): 1553-1561.
刘博,王晨,谭宇璇,等. 基于时频域联合数据辅助MIMO均衡算法的多维度复用千公里级相干传输系统[J]. 电子学报,2024,52(05):1553-1561. DOI：10.12263/DZXB.20221393

LIU Bo, WANG Chen, TAN Yu-xuan, et al. Multidimensional Multiplexed Coherent Transmission System Based on Joint Time-Frequency Domain Data-Assisted MIMO Equalization[J]. Acta Electronica Sinica, 2024, 52(05): 1553-1561. DOI：10.12263/DZXB.20221393

摘要

基于少模光纤的模式复用系统利用单根纤芯中的正交模式实现各独立信道的并行传输，能够有效提升系统容量，解决单模光纤系统的容量危机.本文联合使用模式复用、波分复用与偏振复用技术，基于六模渐变型光纤实现了80个波长通道下32 Gbaud四模双偏振16阶正交振幅调制信号的1 000 km相干传输，并在接收端使用时频域联合数据辅助8×8多输入多输出最小均方算法，以补偿由光纤传输导致的模式耦合及模间色散等线性损伤.与传统的纯时域或纯频域多输入输出最小均方均衡算法相比，该算法分别实现了57.1%的收敛速度提升与25.1%的收敛误差下降.经过1 000 km少模光纤传输后，80通道每个模式及偏振态的误码率均低于开销为20%的软判决前向纠错编码阈值

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=61952917&type=

2.53999996

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=61952903&type=

11.85333347

，系统净速率达68.2 Tbit/s.

Abstract

The mode division multiplexing (MDM) system based on the few mode fiber (FMF) can realize the parallel transmission of different independent channels by using the orthogonal modes in a single fiber core

which can effectively improve the system capacity and solve the “capacity crunch” of the single mode fiber (SMF) system. In this paper

we realize the transmission of the 32 Gbaud four-mode dual-polarization 16-ary quadrature amplitude modulation (16QAM) signals in 80 wavelength channels over 1000 km six-mode graded-index fiber by using jointly the MDM

wavelength division multiplexing (WDM) and polarization division multiplexing (

PDM) techniques. In addition

we use the hybrid time-frequency domain data-assisted 8×8 multiple-input multiple-output (MIMO) least mean square (LMS) equalization at the receiver to compensate for the linear damages such as the mode coupling (MC) and differential mode group delay (DMGD) caused by the fiber transmission. Compared with the commonly used time-domain or frequency-domain MIMO-LMS equalization

the joint use of time and frequency domain can realize 57.1% improvement in convergence speed and 25.1% reduction in convergence error. After 1 000 km delivery of FMF

the bit error ratio (BER) of each mode and polarization state of all the 80 channels is lower than the 20% soft-decision forward error correction (SD-FEC) threshold of 2.4×10

-2

and the net transmission rate is up to 68.2 Tbit/s.

关键词

Keywords

references

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