光通信技术2024，Vol.48Issue(2)：7-11,5.DOI:10.13921/j.cnki.issn1002-5561.2024.02.002
水下无线光通信动态阈值判决技术研究与性能分析
Research and performance analysis of dynamic threshold decision technology in underwater wireless optical communication
摘要
Abstract
Aiming at the problem that the fixed threshold decision scheme leads to the deterioration of the performance of the un-derwater wireless optical communication system in the turbulent channel environment,a dynamic threshold decision scheme is proposed.Based on the slow fading characteristic of the underwater turbulent channel,the data is sent by frame at the sending end,and the decision threshold is updated every frame at the receiving end according to the amplitude of the leading code of the receiving frame.This paper uses the Monte Carlo method and the Gamma-Gamma turbulence channel model to simulate the un-derwater wireless optical communication system.The simulation results show that in the case of weak turbulence channel envi-ronment and when the system bit error rate is 10-6,the dynamic threshold decision scheme improves the bit error performance by 5.4 dB compared with the fixed threshold decision scheme.In the case of medium and strong turbulence channel environment,the dynamic threshold decision scheme can effectively suppress the occurrence of bit error rate threshold phenomenon.关键词
水下无线光通信/动态阈值判决/海洋湍流/Gamma-Gamma信道模型Key words
underwater wireless optical communication/dynamic threshold decision/ocean turbulence/Gamma-Gamma channel model分类
信息技术与安全科学引用本文复制引用
王争辉,高冠军,张家梁,李哲..水下无线光通信动态阈值判决技术研究与性能分析[J].光通信技术,2024,48(2):7-11,5.基金项目
国家自然科学基金项目(62371064)资助 （62371064）
北京市自然科学基金项目(4232050)资助 （4232050）
北京邮电大学博士创新项目(CX2022213)资助. （CX2022213）
