适用于δ-相关解扩的扩频码检验方法  

Spread-spectrum Code Test Method for δ-correlation Despreading

作　　者：龙德浩[1] 陈志清[2] 

机构地区：[1]四川大学,成都610064 [2]成都大学,成都610106

出　　处：《电讯技术》2012年第10期1577-1581,共5页Telecommunication Engineering

摘　　要：基于Welch内积定理(IC定理),导出了归一化零时延互相关函数或零时延内积的绝对最大值δ0的三条基本特性,从而把Welch内积定理演变成了适用于计算量较小、解扩增益较高、有峰值、无旁瓣的δ-相关解扩的扩频码检验方法,即"实用Welch内积定理-扩频码检验方法",为作者拟定的"δ/θ型基带相关检测/解扩方案"(电讯技术,2012,52(9):1438-1442)的工程应用奠定了扩频码检验与设计的理论基础。这两个检验方法与现存经典(含Welch)扩频码检验方法在参数、结构、判决方式等方面都不相同。Based on Welch IC theorem,the three basic characteristics of the absolute maximum values δ0 of the normalized zero-delay cross-correlation values or zero-delay inner products are derived,thereby,the Welch inner products theorem is developed into a practical spreading code test method,which is called Welch inner products theorem-spreading code test method,for δ-correlation despreading with less computation,higher despreading gain,a peak,and no sidelobe,in order that the spreading codes test and design theoretical foundation for ＂δ/θ base band correlation detection/despreading scheme＂ proposed by the authors in Telecommunication Engineering（2012,52（9）：1438-1442） has been built.The differences between the two test methods and the existing classic（including Welch） test methods for spreading codes are that their parameters,structure,decision rule and so on are not the same.

关 键 词：扩频码检验 Welch内积定理 实用Welch内积定理-扩频码检验 δ-相关解扩 

分 类 号：TN929.53[电子电信—通信与信息系统]