| 一种基于K-means算法的长码直扩信号伪码序列盲恢复方法* |
| |
| 引用本文： | 白娟,张天骐,余熙,高春霞.一种基于K-means算法的长码直扩信号伪码序列盲恢复方法*[J].计算机应用研究,2011,28(12):4537-4540. |
| |
| 作者姓名： | 白娟 张天骐 余熙 高春霞 |
| |
| 作者单位： | 重庆邮电大学信号与信息处理重庆市重点实验室,重庆,400065 |
| |
| 基金项目： | 高等学校学科创新引智计划资助项目（B07018）；黑龙江省自然科学基金重点资助项目（ZJG0709） |
| |
| 摘 要： | 针对长码直接序列扩频(DSSS)信号伪码(PN)序列盲恢复的难题,借鉴无监督聚类分析的思想,提出了一种基于K均值(K-means)聚类算法的长码直扩信号PN码序列盲恢复方法.该方法首先通过最小平均相异度完成PN码序列的盲同步；然后利用K均值算法完成PN码序列的盲估计；最后利用游程检验算法筛选出原PN码序列,从而完成PN码序列的盲恢复.理论分析和计算机仿真表明,该方法可以在较低信噪比下准确恢复长码直扩信号PN码序列,表现出很好的性能.
|
| 关 键 词： | 长码直扩信号 伪码序列 K均值聚类 游程检验 盲恢复 |
Blind recovery method of PN sequence in long code DSSS signals based on K-means clustering algorithm |
| |
| BAI Juan,ZHANG Tian-qi,YU Xi,GAO Chun-xia.Blind recovery method of PN sequence in long code DSSS signals based on K-means clustering algorithm[J].Application Research of Computers,2011,28(12):4537-4540. |
| |
| Authors: | BAI Juan ZHANG Tian-qi YU Xi GAO Chun-xia |
| |
| Affiliation: | BAI Juan,ZHANG Tian-qi,YU Xi,GAO Chun-xia(Chongqing Key Laboratory of Signal & Information Processing,Chongqing University of Posts & Telecommunications,Chongqing 400065,China) |
| |
| Abstract: | For the problem of blind restoration of the pseudo-noise(PN) sequence in long code direct sequence spread spectrum(DSSS) signals,learning from the idea of unsupervised clustering analysis,this paper proposed a blind recovery method of the PN sequence based on K-means clustering algorithm.In this method,the blind synchronization of the PN sequence was completed by the smallest average dissimilarity,then used K-means clustering algorithm to estimate the PN sequence.Finally,employed runs test algorithm to filt... |
| |
| Keywords: | long code direct sequence spread spectrum(DSSS) pseudo-noise(PN) sequence K-means clustering runs test blind restoration |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《计算机应用研究》浏览原始摘要信息 |
|
点击此处可从《计算机应用研究》下载全文 |
|
