摘要
利用线性调频(Chirp)信号在水下通信中具有良好的抗噪声和抗多径特性,提出基于Chirp-BOK(binary orthogonal keying,二进制正交键控调制)扩频的水声通信系统。系统采用二进制正交键控调制以及匹配滤波接收器,利用正向调频信号和反向调频信号,结合BOK调制技术,实现适合水声环境的扩频通信系统。噪声信道和多径信道下的仿真实验结果表明,该系统具有良好的抗噪声和抗多径性能,适用于水声系统的扩频通信。
An underwater acoustic communication system based on Chirp-BOK spread spectrum was proposed,using Chirp signal s excellent noise and multipath tolerant properties for underwater communication.The proposed system involved binary orthogonal keying and matching filer to implement reliable and efficient data transmission for underwater acoustic channel,while tolerating the disadvatages of low SNR and multipath fading environment.Simulation results for both AWGN channel and multipath channel have shown that the proposed scheme excels in the performance of anti-noise and anti-multipath.
作者
伊锦旺
朱逸
王贤凌
陈祥捷
张佳敏
YI Jinwang;ZHU Yi;WANG Xianling;CHEN Xiangjie;ZHANG Jiamin(School of Optoelectronic&Communication Engineering,Xiamen University of Technology,Xiamen 361024,China;MOE Key Laboratory of Underwater Acoustic Communication andMarine Information Technology,Xiamen University,Xiamen 361005,China)
出处
《厦门理工学院学报》
2018年第1期70-75,共6页
Journal of Xiamen University of Technology
基金
国家自然科学基金项目(61701422)
福建省自然科学基金项目(2017J01785
2016J01323)
厦门理工学院高层次人才项目(YKJ15034R)
水声通信与海洋信息技术教育部重点实验室(厦门大学)开放课题基金(201602)
关键词
水声通信系统
线性调频信号
二进制正交键控调制
扩频通信
抗噪声
抗多径
underwater acoustic communication system
Chirp
binary orthogonal keying
spread spectrum communication
anti-noise
anti-multipath
