异步码分多址通信中混沌扩频序列的研究

被引:17
作者
贾占峰
张琪
郑君里
机构
[1] 清华大学电子工程系!北京
关键词
通信系统; 混沌扩频序列; 异步码分多址; 选择判据;
D O I
10.16511/j.cnki.qhdxxb.1999.07.027
中图分类号
TN914.53 [码分多址(CDMA)通信];
学科分类号
0810 ; 081001 ;
摘要
为了增加异步码分多址通信系统的可用码组,研究了在该系统中使用混沌扩频序列的可能性。针对异步码分多址的特性,提出了选择扩频序列的一系列判据,分析了混沌序列可能达到的性能极限,并以此为依据找出了性能更佳的混沌序列实例。数值计算表明,新的混沌序列码组比logistic映射产生的混沌序列码组在性能上有较大提高。
引用
收藏
页码:111 / 115
页数:5
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