TD-LTE系统小区搜索定时同步的改进算法  

An improved timing synchronization algorithm of cell search in TD-LTE system

作　　者：石伟萍[1] 刘辉[1] 李小文[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《电子技术应用》2013年第9期112-115,共4页Application of Electronic Technique

基　　金：国家科技重大专项(2011ZX03001-003-01)

摘　　要：通过对TD-LTE系统小区搜索定时同步的研究,结合Zadoff-Chu序列自身的特性,给出了一种基于SSS的定时同步算法,利用SSS信号的时域共轭对称性正确地估计定时同步点。理论分析和仿真结果表明,该算法性能良好,复杂度低,在存在频偏的情况下也能够准确地估计SSS定时同步点的位置,较常规算法可靠性有了很大提高。Research on cell search timing synchronization algorithm in TD-LTE system,according to the Zadoff-Chu sequence character, a timing synchronization algorithm based on SSS is proposed in this paper. Both the theory analysis and simulation results show that the algorithm＇s performance is perfect and complexity is low. The SSS timing synchronization position is accurate when frequency offset is existed, the algorithm can improve the reliance in comparison with the normal methods.

关 键 词：TD—LTE 小区搜索 定时同步 辅同步信号 

分 类 号：TN929.5[电子电信—通信与信息系统]