电讯技术2025，Vol.65Issue(2)：165-176,12.DOI:10.20079/j.issn.1001-893x.241024007
水声OTFS通信系统的研究现状、挑战与趋势
Research Status,Challenges and Trends of Underwater Acoustic OTFS Communication System
摘要
Abstract
Underwater acoustic communication serves as a core technology for ocean information transmission,with widespread applications in ocean exploration,maritime supervision,and underwater engineering.However,the underwater acoustic channel presents significant challenges due to its doubly dispersive characteristics,posing major obstacles to system design.Although orthogonal frequency division multiplexing(OFDM)technology has been widely used in underwater acoustic communication,its performance is still limited by the accuracy of channel state estimation.Orthogonal time frequency space(OTFS)modulation technology,by transforming data for transmission in the delay-Doppler domain,can effectively address multipath effects and Doppler shifts in underwater acoustic channels,thereby enhancing the performance and reliability of communication systems.The authors review the key processing techniques of OTFS in underwater acoustic communication,covering three core aspects:channel estimation,channel equalization,and multiple access technologies.And they discusse the future development trends in terms of antenna expansion,machine learning integration,and synchronization innovation.At the same time,they analyze in detail the technical challenges faced in signal detection in complex channel environments,balancing computational complexity and real-time performance,accuracy of parameter estimation,and the impact of underwater environments on data reliability.关键词
水声通信/正交时频空(OTFS)/信道估计/信道均衡/多址接入Key words
underwater acoustic communications/orthogonal time frequency space(OTFS)/channel estimation/channel equalization/multiple access分类
电子信息工程引用本文复制引用
廖勇,刘爽,汪浩..水声OTFS通信系统的研究现状、挑战与趋势[J].电讯技术,2025,65(2):165-176,12.基金项目
重庆市自然科学基金(CSTB2023NSCQ-MSX0025) （CSTB2023NSCQ-MSX0025）
