基于OFDM子载波分配的水平电偶极子跨介质通信性能研究  

Performance Analysis of Horizontal Electric Dipole Transmedia Communication Based on OFDM Subcarrier Allocation

作　　者：程凡曦 吕俊军 崔培 CHENG Fanxi;LYV Junjun;CUI Pei(Dalian Scientific Test and Control Technology Institute,Dalian Liaoning 116013,China)

机构地区：[1]大连测控技术研究所,辽宁大连116013

出　　处：《通信技术》2025年第2期117-122,共6页Communications Technology

摘　　要：随着人们对海洋的探索逐渐深入,对于在空中和海洋间进行实时数据传输的需求日益增加,因此研究有效稳定的海空跨域通信技术非常重要。由于海水和空气两种介质的特性不同及恶劣环境的影响,声、光等跨域通信信道复杂多变,而特低频(Ultra Low Frequency,ULF)电磁波具有良好的穿透性,可以平稳地穿过水-空界面。分析了不同调制阶数的正交频分复用技术(Orthogonal Frequency-Division Multiplexing,OFDM)的性能,并提出了一种将子载波分配给不同调制模式的方法。仿真结果表明,所提方法能够提高通信的可靠性,可以为跨介质单向通信设计和系统研制提供参考。With the gradual deepening of people’s exploration of the ocean and the increasing requirements for real-time data transmission between the air and the ocean,thus it is very important to study effective and stable cross-domain communication technology between the sea and the air.Due to the different characteristics of the two media,seawater and air,and the impact of harsh environments,the cross-domain communication channels such as acoustic and optical are complex and variable,while ULF(Ultra Low Frequency)electromagnetic wave has a good penetration,which can smoothly pass through the water-air interface.This paper analyzes the performance of OFDM(Orthogonal Frequency-Division Multiplexing)with different modulation orders and proposes a method to allocate subcarriers to different modulation modes.Simulation results indicate that the proposed method can improve the reliability of communication and can provide a reference for the design of cross-media unidirectional communication and the development of system.

关 键 词：空海跨域通信 水平电偶极子 海水-空气界面 正交频分复用技术 

分 类 号：TN99[电子电信—信号与信息处理]