摘要
随着对水下通信速率要求的提高和水下通信用户的增加,实现高速水声通信和对水下频谱资源的有效共享成为了水声通信的研究热点。认知水声通信系统为解决频谱资源共享提出了新的思路,而OFDM技术又具有频谱利用率高、通信速率快、频率选择灵活等优越性能。在阐述两种技术各自优势的基础上,指出了OFDM技术应用于认知水声通信系统的可行性,提出了一种基于OFDM技术的认知水声通信系统的设计方案,并给出了系统框图及仿真结果,验证了基于OFDM技术的认知水声通信系统的可行性和有效性。
With the increased demand for underwater acoustic communication rate and the increase of users,high-speed underwater acoustic communication and effective share of spectrum resources become a hot topic in underwater acoustic communication research.Cognitive underwater communication is a new way to solve the spectrum resources sharing,and OFDM has advantages including high efficiency in spectrum utilization,faster communication speed and flexibility in choosing frequencies.After introducing respective advantages of the two techniques,the feasibility of adopting OFDM technology to cognitive underwater communication is proved.A design scheme of cognitive underwater communication based on OFDM,the block diagram and the simulation results are given.The results prove the feasibility and effectiveness of the OFDM based cognitive underwater communication.
出处
《声学技术》
CSCD
2012年第6期615-618,共4页
Technical Acoustics
基金
国家自然科学基金项目(51179034
60802060)
黑龙江省自然科学基金项目(F201109)
上海交通大学海洋工程国家重点实验室开放课题(1007)资助
关键词
认知水声通信
频谱资源
高速通信
cognitive underwater communication
spectrum resources
high-speed communication
