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基于LS码的MC-CDMA系统抗多址干扰分析 被引量：1

Analysis on Anti-multiaccess Interference of MC-CDMA System based on LS Code
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摘要 LS码是一种具有正交互补性质的多址码,相关性能优良,因此可以用于克服符号间干扰(ISI)和多址干扰(MAI)。它提出了一种克服多载波码分多址(MC-CDMA)系统多址干扰的LS码接入法,并对采用这两种码的MC-CDMA系统进行仿真对比,对比结果表明:相关函数特性好的LS码序列具有较好的正交性更适合于同步的MC-CDMA系统,其克服多址干扰性能较MC-Walsh-CDMA系统强。 LS code,as a kind of multiple access code with orthogonal complementary property,is of perfect correlation property,and so could be used to reduce inter-symbol interference and Multi-access interference.This paper proposes a LS-code access method to overcome multiple access interference in MC-CDMA system,and the simulations on MC-CDMA system with two kinds of spreading sequences as spreading codes show that these two sequences are fairly orthogonal,and thus suitable for synchronized MC-CDMA system,and that MC-LS-CDMA system is much stronger than MC-Walsh-CDMA system in anti-multiaccess interference performance.
作者 弓美桃 刘凌云
机构地区 内蒙古集宁师范学院
出处 《通信技术》 2012年第11期17-19,共3页 Communications Technology
关键词 LS码 MC-LS-CDMA系统 误码率 多址干扰 LS code MC-LS-CDMA system bit error rate Multi-access interference
分类号 TN914.42 [电子电信—通信与信息系统]
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通信技术
2012年 第11期

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