QQ客服 官方微博 反馈留言

	混沌多进制直接序列扩频信号的盲解扩
	王航 ; 郭静波 ; 王赞基 ; WANG Hang ; GUO Jingbo ; WANG Zanji
	2010-06-10 ; 2010-06-10
关键词	直接序列扩频信号(DSSS) 混沌 多进制扩频 盲解扩 K均值聚类 direct sequence spread spectrum(DSSS) chaos M-ary DSSS blind despreading K-means clustering TN914.42
其他题名	Chaotic M-ary direct sequence spread spectrum signals blind despreading
中文摘要	为了在混沌扩频序列未知的情况下实现混沌多进制直接序列扩频信号的盲解扩,提出了一种盲解扩方法。该方法将混沌多进制扩频信号分段,借鉴数据挖掘领域的K均值聚类算法,对分段数据按照最小簇内距离、最大簇间距离的原则分类,通过平均侧影宽度完成对延迟时间和扩频序列数量的估计。对于单用户、窄带干扰以及多用户情况,进行了数值仿真。结果表明:该方法适用于混沌多进制扩频信号的盲解扩问题。; A blind despreading method was developed to blindly despread chaotic multi-sequence direct sequence spread spectrum(DSSS) signals with unknown spreading codes.The chaotic M-ary DSSS signal was first divided into non-overlapped individuals.The K-means clustering method used in data mining was used to estimate the clustering properties spreading codes by maximizing the inter-cluster distances and minimizing the inner-cluster distances.The delay time and the number of spreading codes were estimated by maximizing the average silhouette width.Simulations were used to model the blind despreading performance for a single user with narrow band interference and multiple users.The results show the feasibility of this method to blindly despread chaotic M-ary DSSS signal.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/62163]
专题	清华大学
推荐引用方式 GB/T 7714	王航,郭静波,王赞基,等. 混沌多进制直接序列扩频信号的盲解扩[J],2010, 2010.
APA	王航,郭静波,王赞基,WANG Hang,GUO Jingbo,&WANG Zanji.(2010).混沌多进制直接序列扩频信号的盲解扩..
MLA	王航,et al."混沌多进制直接序列扩频信号的盲解扩".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。