文章摘要
赵安邦,解立坤,陈凯,周彬,路晓磊.虚拟时间反转镜PDS水声通信双向均衡方案[J].声学技术,2011,(6):480~483
虚拟时间反转镜PDS水声通信双向均衡方案
Research on bidirectional equalization in PDS system for under-water acoustic communication
投稿时间:2010-11-29  修订日期:2011-03-31
DOI:
中文关键词: 虚拟时间反转镜  Pattern时延差编码  双向均衡
英文关键词: virtual time reversal mirror|pattern time delay shift coding|bidirectional equalization
基金项目:国家自然科学基金((51009041);海洋公益性行业科研专项经费项目(gz2010001);中央高校基本科研业务费专项资金(F030102)
作者单位E-mail
赵安邦 哈尔滨工程大学水声技术国家重点实验室, 哈尔滨150001  
解立坤 哈尔滨工程大学水声技术国家重点实验室, 哈尔滨150001 jielikun@hrbeu.edu.cn 
陈凯 哈尔滨工程大学水声技术国家重点实验室, 哈尔滨150001
广东湛江91388部队, 广东湛江524022 
 
周彬 哈尔滨工程大学水声技术国家重点实验室, 哈尔滨150001  
路晓磊 哈尔滨工程大学水声技术国家重点实验室, 哈尔滨150001  
摘要点击次数: 542
全文下载次数: 697
中文摘要:
      虚拟时间反转镜(Virtual Time Reversal Mirror,VTRM)引导了空间聚焦和信道均衡,将其应用在Pattern时延差编码(Pattern Time Delay Shift Coding,PDS)水声通信体制,构成VTRM-PDS系统,可增强抗多途干扰的能力。但当通信节点间存在缓慢运动,即信道缓慢时变时,在一帧信号中,信道均衡的效果会随时间逐渐降低,产生失配现象。提出了双向均衡方案,在没有信道先验知识的前提下,通过前向和后向信道均衡,充分利用探测信号和信道信息,提高了信道均衡效果。湖试结果证明了该方案的优越性。
英文摘要:
      Virtual time reversal mirror(VTRM) leads to spatial focusing and adaptive channel equalization.When VTRM is applied to pattern time delay shift coding(PDS) system for underwater acoustic communication,the system is called VTRM-PDS system,and so the system has the ability of resisting multipath interference.But when the communication nodes have slow movement,the channel is time-variant,and so in a frame of signal,the channel equalization effect will decrease with the time and mismatch will happen.Bidirectional equalization scheme is proposed in the paper.The scheme can adequately use detection signal and channel information and increase channel equalization effect by for-ward and backward equalization without study of channel.The lake trial results prove the superiority of bidirectional equalization scheme.
查看全文   查看/发表评论  下载PDF阅读器
关闭
function PdfOpen(url){ var win="toolbar=no,location=no,directories=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes"; window.open(url,"",win); } function openWin(url,w,h){ var win="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=" + w + ",height=" + h; controlWindow=window.open(url,"",win); } &et=FC9DA7BF2F842A3B968D35B8E2AD36DC774059FCC8C194D3BD5B57B220EA285CBAF9B96E27795CDCE661928172F76166B5A97F1EF4DC0B9E59BDE928E435E2EF09716CBA4110927AE038D88427284143E63E54CA4721BF27DE233D2D7D470F4A&pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=DDCFCD5ACE1B1E5A6D46213553C850CA&yid=9377ED8094509821&aid=&vid=&iid=B31275AF3241DB2D&sid=03436AC72A659ACA&eid=07C6E4664BB7C5DA&fileno=20110603&flag=1&is_more=0">