%0 Journal Article
%T Performance enhancement of DS/SS system using chaotic spreading sequence<br>使用混沌扩频序列增强DS/SS系统性能
%A ZHANG Zhi-yu
%A XIAO Wei
%A YE Jia-lu
%A ZHANG Jiu-long
%A <br>张志禹
%A 肖伟
%A 叶嘉鲁
%A 张九龙
%A 吕延军
%J 计算机应用
%D 2007
%I 
%X In this paper,a chaotic sequence generator based on Logistic map and interleaver was proposed and used to generate spreading sequence.The generated chaotic sequence is balanced itself and has excellent correlation property and sidelobe property.When the sequence is applied to Direct Sequence/Spread Spectrum(DS/SS) system,Multiple Access Interference(MAI) can be mitigated by using the spreading sequences.The system capability and performance can be enhanced,and the information can be effectively encrypted.The Bit-Error Rate(BER) performance of spreading sequence from the proposed chaotic sequence generator was compared with that of the conventional m-sequence and Gold sequence.Results show that the new sequence has a noticeable improvement in BER performance in low Signal-toNoise Ratio(SNR).
%K spread-spectrum communication
%K chaos
%K security communication
%K DS/SS(Direct Sequence/Spread Spectrum)<br>扩频通信
%K 混沌
%K 保密通信
%K 直接序列扩频
%K 使用
%K 混沌扩频序列
%K 增强系统
%K 直接序列扩频系统
%K 性能
%K enhancement
%K Performance
%K spreading
%K sequence
%K chaotic
%K 交织器设计
%K 仿真结果
%K 加密
%K 信息
%K 容量
%K 多址干扰
%K 应用
%K 平衡
%K 寻优
%K 旁瓣特性
%K 相关特性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=7EB4F89C56892AD6E690C6F49AFACF83&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=CA4FD0336C81A37A&sid=5E25104E99903E8A&eid=09E495F616948E78&journal_id=1001-9081&journal_name=计算机应用&referenced_num=0&reference_num=12