基于空时编码的轨道角动量复用海洋无线光通信系统的传输特性仿真

doi:10.11959/j.issn.1000-436X.2020253

通信学报 ›› 2020, Vol. 41 ›› Issue (12): 110-117.doi: 10.11959/j.issn.1000-436X.2020253

基于空时编码的轨道角动量复用海洋无线光通信系统的传输特性仿真

尹霄丽, 郑桐, 孙志雯, 张兆元

北京邮电大学电子工程学院，北京 100876

修回日期:2020-11-25 出版日期:2020-12-25 发布日期:2020-12-01
作者简介:尹霄丽（1970- ），女，内蒙古呼伦贝尔人，博士，北京邮电大学教授、博士生导师，主要研究方向为无线光通信。
郑桐（1996- ），男，四川成都人，北京邮电大学硕士生，主要研究方向为无线光通信。
孙志雯（1995- ），女，黑龙江哈尔滨人，北京邮电大学硕士生，主要研究方向为无线光通信。
张兆元（1997- ），男，河南驻马店人，北京邮电大学博士生，主要研究方向为无线光通信、光散射等。
基金资助:
国家自然科学基金资助项目(61575027);国家自然科学基金资助项目(62071062);北京市自然科学基金资助项目(4192041)

Simulation of transmission characteristics of oceanic wireless optical communication systems based on orbital angular momentum multiplexing with space-time coding

Xiaoli YIN, Tong ZHENG, Zhiwen SUN, Zhaoyuan ZHANG

School of Electronic Engineering, Beijing University of Posts and Telecommunication, Beijing 100876, China

Revised:2020-11-25 Online:2020-12-25 Published:2020-12-01
Supported by:
The National Natural Science Foundation of China(61575027);The National Natural Science Foundation of China(62071062);The Natural Science Founda-tion of Beijing Municipality(4192041)

摘要/Abstract

摘要：

为了解决轨道角动量复用水下无线光通信系统中海洋湍流引起的信道串扰问题，对空时编码技术在该系统中的应用进行了研究。基于Rytov近似，利用协方差法和插值法产生了具有相关性的随机相位屏，模拟了时变的海洋湍流信道对轨道角动量信号的影响，仿真分析了采用空时编码的轨道角动量复用光通信系统传输特性、时变湍流屏的相位结构函数以及轨道角动量光束经时变仿真信道后的探测概率分布，仿真结果符合理论预期。仿真结果显示利用空时编码技术能够有效降低海洋湍流对系统误比特率的影响。

关键词: 轨道角动量, 海洋湍流, 时变信道仿真, 空时编码

Abstract:

In order to mitigate the crosstalk caused by oceanic turbulence in the underwater wireless orbital angular momentum multiplexing optical communication system, the application of space-time coding technology in the system was studied.Based on Rytov approximation, the covariance method and interpolation method were used to simulate correlated random phase screens and then the influence of time-varying oceanic turbulence channel on orbital angular momentum signal was studied.The transmission characteristics of orbital angular momentum multiplexing optical communication system with space-time coding was analyzed by simulation.The phase structure function of the time-varying phase screens and the detection probability distribution of the beam carrying the orbital angular momentum through the time-varying simulation channel were in line with theoretical expectations.The simulation results show that the space-time coding technology can effectively mitigate the influence of ocean turbulence on the system bit error rate.

Key words: orbital angular momentum, oceanic turbulence, time-varying channel simulation, space-time coding

中图分类号:

尹霄丽, 郑桐, 孙志雯, 张兆元. 基于空时编码的轨道角动量复用海洋无线光通信系统的传输特性仿真[J]. 通信学报, 2020, 41(12): 110-117.

Xiaoli YIN, Tong ZHENG, Zhiwen SUN, Zhaoyuan ZHANG. Simulation of transmission characteristics of oceanic wireless optical communication systems based on orbital angular momentum multiplexing with space-time coding[J]. Journal on Communications, 2020, 41(12): 110-117.

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基于空时编码的轨道角动量复用海洋无线光通信系统的传输特性仿真

Simulation of transmission characteristics of oceanic wireless optical communication systems based on orbital angular momentum multiplexing with space-time coding

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