基于CAZAC序列的水声通信技术研究

›› 2013, Vol. 26 ›› Issue (5): 142-.

基于CAZAC序列的水声通信技术研究

杜利刚,杨利,苏建才

(中国电子科技集团公司第20研究所通信事业部,陕西西安 710068)

出版日期:2013-05-15 发布日期:2013-06-20
作者简介:杜利刚(1985—),男,硕士,助理工程师。研究方向:水声通信,卫星通信,频谱感知。E-mail:klxldlg@126.com

CAZAC Sequence-Based Underwater Acoustic Communication Technology Research

DU Ligang,YANG Li,SU Jiancai

(Communications Division,20^thResearch Institute of China Electronics Technology Group Corporation,Xi'an 710068,China)

Online:2013-05-15 Published:2013-06-20

摘要/Abstract

摘要：

针对CI/OFDM系统对同步的敏感要求,提出了一种基于CAZAC序列的时频同步算法。该算法不仅可以实现定时同步,还可利用定时同步的相关结果和循环相关的原理实现小数倍频偏和整数倍频偏的估计与补偿。仿真和实验结果表明,在水声信道下,该算法具有良好的时频同步性能。

关键词: CI/OFDM, CAZAC, 频偏估计

Abstract:

In view of the fact that the CI/OFDM system is sensitive to synchronization,this paper puts forward a time and frequency synchronization algorithm based on CAZAC sequence.The time offset estimation and carrier frequency offset estimation can be achieved by this algorithm.Simultaneously,the fractional part and integral part of carrier offset estimation can be respectively obtained by the correlation result of time offset estimation and cyclic correlation principle.The simulation and experimental results show that in the underwater acoustic channel,the algorithm has a better time-frequency synchronization performance.

Key words: CI/OFDM;CAZAC;frequency offset estimation

中图分类号:

TN929.3

杜利刚,杨利,苏建才. 基于CAZAC序列的水声通信技术研究[J]. , 2013, 26(5): 142-.

DU Ligang,YANG Li,SU Jiancai. CAZAC Sequence-Based Underwater Acoustic Communication Technology Research[J]. , 2013, 26(5): 142-.

[1]	陈伟,邢依依,刘梦婷. 一种基于Burg谱估计和FFT的频偏估计方法[J]. , 2016, 29(3): 160-.
[2]	邵峰. MIMO OFDM同步技术研究[J]. , 2012, 25(3): 85-.
[3]	蒋旭平. 适合突发传输的非数据辅助载波频偏估计算法[J]. , 2010, 23(11): 100-102.