水下无线光通信中MIMO技术研究现状  

Research Status of MIMO Technology in Underwater Wireless Optical Communication

作　　者：张立妍 蒋锐 张龙 唐昕柯 董宇涵 ZHANG Li-yan;JIANG Rui;ZHANG Long;TANG Xin-ke;DONG Yu-han(Shenzhen International Graduate School,Tsinghua University,Shenzhen 518055,China;Peng Cheng Laboratory,Shenzhen 518055,China)

机构地区：[1]清华大学深圳国际研究生院,广东深圳518055 [2]鹏城实验室,广东深圳518055

出　　处：《光通信研究》2023年第4期14-20,72,共8页Study on Optical Communications

基　　金：国家自然科学基金资助项目(62201303);广东省自然科学基金资助项目(2022A1515010209)。

摘　　要：水下无线光通信(UWOC)具有大容量和高速率等优势,然而受水下复杂环境和光学器件带宽的影响,实际通信范围和传输速率受到制约。多输入多输出(MIMO)技术将空间单流数据转换为多流数据并行传输,可以扩展UWOC的通信距离,缓解水下吸收、散射效应和湍流引起的通信性能下降,因而受到广泛关注。基于此,文章围绕UWOC中的MIMO技术,分析和总结了MIMO-UWOC的信道模型、研究现状、实验装置与原型以及发展趋势与展望。Underwater Wireless Optical Communication(UWOC)has the advantages of large capacity,high speed and etc.However,it suffers from limited communication range and data rate in practice due to the complex underwater environment and the limited bandwidth of optical devices.Multiple-Input Multiple-Output(MIMO)technology has received considerable attention since it converts spatial single-stream data into multiple-stream data for parallel transmission.Therefore it can extend the UWOC range and alleviate the performance degradation caused by underwater absorption,scattering,and turbulence.In this paper,focusing on the MIMO technology in UWOC systems,we analyzed the channel modeling,research progress,experimental setups and prototypes,and the development and future trend of MIMO-UWOC technology.

关 键 词：水下无线光通信 多输入多输出 空间分集 误码率 空间复用 

分 类 号：TN929[电子电信—通信与信息系统]