基于波前相位校正的OAM-SK FSO通信系统误码率性能研究

李爽; 王平; 刘涛; 潘宇婷; 王炜

doi:10.11959/j.issn.1000-436x.2022110

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基于波前相位校正的OAM-SK FSO通信系统误码率性能研究

学术论文 | 更新时间：2024-06-05

- 基于波前相位校正的OAM-SK FSO通信系统误码率性能研究
- Research on BER performance of the OAM-SK FSO communication system with wavefront phase correction
- 通信学报 2022年43卷第5期页码：14-23
- 作者机构：
  
  西安电子科技大学通信工程学院综合业务网国家重点实验室，陕西西安 710071
- 作者简介：
  
  [ "李爽（1997- ），女，陕西商洛人，西安电子科技大学博士生，主要研究方向为涡旋光通信、水下无线光通信" ]
  [ "王平（1977- ），男，陕西西安人，博士，西安电子科技大学教授、博士生导师，主要研究方向为无线光通信、可见光通信以及人工智能通信等" ]
  [ "刘涛（1986- ），男，陕西西安人，西安电子科技大学博士生，主要研究方向为无线光通信" ]
  [ "潘宇婷（1996- ），女，浙江台州人，西安电子科技大学硕士生，主要研究方向为涡旋光通信" ]
  [ "王炜（1996- ），女，山西临汾人，西安电子科技大学博士生，主要研究方向为水下无线光通信、深度学习、涡旋光通信" ]
- 基金信息：
  
  国家自然科学基金资助项目(62071365);陕西省重点研发计划基金资助项目(2022GY-103)
- DOI：10.11959/j.issn.1000-436x.2022110
  中图分类号： TN929.12
- 网络首发：2022-05，
  
  纸质出版：2022-05-25
- 稿件说明：
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李爽, 王平, 刘涛, 等. 基于波前相位校正的OAM-SK FSO通信系统误码率性能研究[J]. 通信学报, 2022,43(5):14-23.

Shuang LI, Ping WANG, Tao LIU, et al. Research on BER performance of the OAM-SK FSO communication system with wavefront phase correction[J]. Journal on Communications, 2022, 43(5): 14-23.
李爽, 王平, 刘涛, 等. 基于波前相位校正的OAM-SK FSO通信系统误码率性能研究[J]. 通信学报, 2022,43(5):14-23. DOI： 10.11959/j.issn.1000-436x.2022110.

Shuang LI, Ping WANG, Tao LIU, et al. Research on BER performance of the OAM-SK FSO communication system with wavefront phase correction[J]. Journal on Communications, 2022, 43(5): 14-23. DOI： 10.11959/j.issn.1000-436x.2022110.

摘要

弱大气湍流条件下，针对轨道角动量键控自由空间光通信系统，基于Gerchberg-Saxton算法和角谱理论，提出了一种改进的Laguerre-Gaussian光束波前相位校正算法。该算法将传输前后探测光束的光场分布作为输入，利用迭代计算得到的相位掩膜校正畸变的传输光束，从而减缓大气湍流引起的模间串扰效应。仿真结果表明，改进的波前相位校正算法明显优于传统的GS算法，且随着折射率结构参数的增加，系统的误码率性能得到显著提升。

Abstract

On the basis of Gerchberg-Saxton (GS) algorithm and angular-spectrum theory

an improved wavefront phase correction algorithm to the Laguerre-Gaussian (LG) beams was proposed for the orbital angular momentum-shift keying (OAM-SK) modulation-based free space optical (FSO) communication system under weak atmospheric turbulence.The light field distributions of the probe beam at transmitter and receiver were regarded as the input of the improved wavefront phase correction algorithm.And the correction phase mask was iteratively calculated to correct the distorted LG beams

thereby alleviating the inter-model crosstalk caused by atmospheric turbulence.Simulation results show that the improved wavefront phase correction algorithm is superior to the conditional GS algorithm.And with the increase of the refractive-index structure parameter

the bit error rate (BER) performance of the OAM-SK FSO communication system is significantly improved.

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references

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