适用于MC DS-CDMA信号的定时同步算法  

A novel timing synchronization algorithm for MC DS-CDMA signals

作　　者：罗武[1] 董明科[1] 梁庆林[1] 

机构地区：[1]北京大学信息科学技术学院,北京100871

出　　处：《高技术通讯》2006年第7期661-665,共5页Chinese High Technology Letters

基　　金：863计划（2001AA123051）资助项目.

摘　　要：提出了一种适用于MC DS-CDMA信号的定时同步方案.该方案针对MC DS-CD-MA系统的特点,通过频域相关器输出矢量旋转同时获得多个同步检测统计量的近似值,既提高了捕获性能,又成倍降低了定时跟踪算法复杂度.理论分析和数值结果证明了方案的可行性.A novel code timing synchronization algorithm suited for multi-carrier DS-CDMA signals is proposed and studied. Based on the veetor rotation of the frequeney-domain eorrelator＇ s output, a group of approximate deteetion statisties are simultaneously aequired for eode timing eapture and tracking. Theoretieal and numerieal results show that the new scheme ean improve the performanee and hardware simplifieation as eompared to the eonventional ones.

关 键 词：多载波直扩码分多址 定时同步 定时跟踪 

分 类 号：TN929.533[电子电信—通信与信息系统] TN919.2[电子电信—信息与通信工程]