面向中短距光纤通信系统的多维自适应传输技术

唐明; 陈曦

doi:10.11959/j.issn.1000-436x.2019237

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面向中短距光纤通信系统的多维自适应传输技术

杰青优青专栏 | 更新时间：2024-06-05

- 面向中短距光纤通信系统的多维自适应传输技术
- Multi-dimensional adaptive transmission technique for shortto-medium reach optical fiber communication system
- 通信学报 2019年40卷第11期页码：156-170
- 作者机构：
  
  华中科技大学光学与电子信息学院/武汉光电国家研究中心，湖北武汉 430074
- 作者简介：
  
  [ "唐明（1979- ），男，湖北武汉人，博士，华中科技大学教授、博士生导师，主要研究方向为高速光纤通信系统。" ]
  [ "陈曦（1994- ），男，安徽六安人，华中科技大学博士生，主要研究方向为光纤通信系统中自适应调制编码技术。" ]
- 基金信息：
  
  国家自然科学基金资助项目(61722108);国家自然科学基金资助项目(61331010);国家自然科学基金资助项目(61931010);国家重点研发计划基金资助项目(2018YFB1801205)
- DOI：10.11959/j.issn.1000-436x.2019237
  中图分类号： TP914
- 网络出版日期：2019-11，
  
  纸质出版日期：2019-11-25
- 稿件说明：
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唐明, 陈曦. 面向中短距光纤通信系统的多维自适应传输技术[J]. 通信学报, 2019,40(11):156-170.

Ming TANG, Xi CHEN. Multi-dimensional adaptive transmission technique for shortto-medium reach optical fiber communication system[J]. Journal on communications, 2019, 40(11): 156-170.
唐明, 陈曦. 面向中短距光纤通信系统的多维自适应传输技术[J]. 通信学报, 2019,40(11):156-170. DOI： 10.11959/j.issn.1000-436x.2019237.

Ming TANG, Xi CHEN. Multi-dimensional adaptive transmission technique for shortto-medium reach optical fiber communication system[J]. Journal on communications, 2019, 40(11): 156-170. DOI： 10.11959/j.issn.1000-436x.2019237.

摘要

基于中短距光纤通信系统特点，开展了3种高性能自适应调制编码技术研究。第一种方案在传统的比特与功率加载（BPL）的基础上引入前向纠错编码维度，实现三维自适应调制编码。该算法基于查找表分配调制与编码格式，比BPL算法的复杂度更低，传输速率更高。同样基于查找表，第二种方案借助于分块预编码实现了和传统BPL相同的速率，但削减了最高2 dB的信号功率峰均比，提高了功率效率。第三种方案采用概率整形（PS） QAM作为调制格式，以合理的复杂度为代价换取整形增益与几乎无限精细的调制粒度。依靠自适应分块预编码，在不降低速率的条件下，限制PS-QAM的数目以降低复杂度。实验表明，第三种方案实现了远优于BPL方案的速率与更高的接收机灵敏度。

Abstract

According to the features of short-to-medium reach optical fiber communication systems

three high performance adaptive modulation and coding schemes were investigated.In the first one

a new dimension

forward error correction (FEC)

was introduced to the traditional bit and power loading (BPL) scheme

and the three-dimensional adaptive modulation and coding were achieved.The modulation format and FEC code were allocated based on look-up table (LUT).The proposed algorithm has lower complexity and higher data rate compared to the BPL scheme.The second one was also based on LUT method where one similar data rate with the BPL scheme was achieved using partitioned precoding

but peak-to-average power ratio was reduced up to two dB

and the power efficiency was improved.In the last scheme

probabilistic shaping QAM was adopted as the modulation format

and shaping gain and almost indefinitely fine modulation granularity were achieved at the expense of certain complexity.With adaptive partitioned precoding

without decreasing data rate the number of PS-QAM was limited to reduce the complexity.The experimental results demonstrate that the proposed scheme outperforms the BPL scheme in terms of data rate and receiver sensitivity.

关键词

Keywords

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