一种WCDMA小区搜索算法设计与实现  

One algorithm design for cell searching in WCDMA and implementation

作　　者：袁正午[1] 王重阳[1] 田益[1] 田增山[1] 

机构地区：[1]重庆邮电大学无线定位与空间测量研究所

出　　处：《数字通信》2013年第1期22-26,39,共6页Digital Communications and Networks

基　　金：重庆市教委科研项目(KJ110514)

摘　　要：通过对WCDMA小区搜索算法过程进行研究,分析传统最大似然算法在时隙同步中存在的不足,给出基于频偏补偿和时隙同步相结合的时隙同步方案;采用基于快速哈达码变换的帧同步算法,快速准确实现小区主扰码组的识别。通过WCDMA实时处理系统,验证算法在时隙同步过程中能够有效克服系统频偏带来的同步误差,并最终实时实现小区搜索。Algorithm for slot synchronization of cell searching in WCDMA is summarized in this paper. The deficiency of the maximum likelihood algorithm in slot synchronization is analyzed and the effect of frequency offset is fully considered. A kind of slot synchronization scheme based on PSC searching associated with frequency offset compensation is designed. FHT algorithm is employed in frame synchronization which reduces the computation largely and determines the primary scramb- ling code group faster. By means of real-time processing of the WCDMA system, the result reveals that the algorithm over- comes system frequency offset successfully and gets real-time implementation of cell searching.

关 键 词：小区搜索 时隙同步 帧同步 频偏补偿 快速哈达码变换 

分 类 号：TN929.533[电子电信—通信与信息系统]