短距光传输系统中基于PAM4调制的带限接收技术

刘群; 杜慧琴; 吴香林

doi:10.11959/j.issn.1000-0801.2018091

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短距光传输系统中基于PAM4调制的带限接收技术

研究与开发 | 更新时间：2024-06-05

- 短距光传输系统中基于PAM4调制的带限接收技术
- A band-limited receiver technology based on PAM4 modulation for the short distance optical transmission system
- 电信科学 2018年34卷第3期页码：118-123
- 作者机构：
  
  1. 四川现代职业学院，四川成都 640207
  2. 四川大学计算机学院，四川成都 610211
- 作者简介：
  
  [ "刘群（1986−），女，四川现代职业学院讲师，主要研究方向为通信与信息系统。" ]
  [ "杜慧琴（1985−），女，四川大学计算机学院硕士生，四川现代职业学院讲师、高级工程师，主要研究方向为数据库技术。" ]
  [ "吴香林（1987−），女，四川现代职业学院工程师，主要研究方向为移动通信技术。" ]
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2018091
  中图分类号： TN929.11
- 网络出版日期：2018-03，
  
  纸质出版日期：2018-03-20
- 稿件说明：
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刘群, 杜慧琴, 吴香林. 短距光传输系统中基于PAM4调制的带限接收技术[J]. 电信科学, 2018,34(3):118-123.

Qun LIU, Huiqin DU, Xianglin WU. A band-limited receiver technology based on PAM4 modulation for the short distance optical transmission system[J]. Telecommunications science, 2018, 34(3): 118-123.
刘群, 杜慧琴, 吴香林. 短距光传输系统中基于PAM4调制的带限接收技术[J]. 电信科学, 2018,34(3):118-123. DOI： 10.11959/j.issn.1000-0801.2018091.

Qun LIU, Huiqin DU, Xianglin WU. A band-limited receiver technology based on PAM4 modulation for the short distance optical transmission system[J]. Telecommunications science, 2018, 34(3): 118-123. DOI： 10.11959/j.issn.1000-0801.2018091.

摘要

针对强度调制和直接检测（IM-DD）短距光传输系统中，由于光器件带宽受限特性，导致接收端检测到的PAM4信号存在较大符号间干扰（inter symbol interference

ISI），给出了一种基于判决反馈均衡器（DFE）级联超奈奎斯特速率（FTN）传输的带宽受限下的补偿方案，并在不同的带宽受限场景下进行了仿真验证。仿真结果表明，该带宽受限补偿方案能够有效地恢复接收到的PAM4信号，在误码率低于10

-3

时，有1 dB左右的性能收益。

Abstract

In intensity modulation and direct detection of the short distance optical transmission system

there is some serious ISI (inter symbol interference) for the detected PAM4 signal due to the band-limited performance for the optical devices.A band-limited compensation algorithm based on DFE (decision feedback equalizer) combined FTN (fast than Nyquist) transmission was proposed.Then the algorithm performance gain was simulated in different band-limited scenarios

and the simulation results show that this algorithm can be useful to demodulate PAM4 receiver signal.What is more

there is about 1 dB performance gain at the bit error rate (BER) of 10

-3

for the serious conditi

ons.

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Keywords

references

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