基于二维多级级联匹配滤波的WCDMA信号时隙同步方法  

Time Slot Synchronization Method of WCDMA Signal Based on Two Dimensional Multistage Cascade Matched Filter

作　　者：赵艳[1] 肖扬灿[1] 陈美良[1] ZHAO Yan;XIAO Yang-can;CHEN Mei-liang(No.36 Research Institute of CETC,Jiaxing Zhejiang 314033,China)

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2020年第2期22-26,共5页Communication Countermeasures

摘　　要：分析WCDMA系统中主同步码结构特点,改进传统匹配滤波器为三个级联滤波器,结合频率步进进行二维搜索,实现了对存在频偏条件下WCDMA系统的时隙同步,并通过实际信号进行验证。验证证明,该方法能适应低信噪比、大频偏条件下的时隙同步,硬件资源消耗少,信号检测概率高。This paper analyzes the characteristics of PCH in WCDMA system,improves the traditional matching filter into three cascaded filters,combines the frequency step to carry out two-dimensional search,and realizes the time slot synchronization of WCDMA system under the condition of frequency offset.This method realizes the time slot synchronization of WCDMA system,and is verified by the actual signal.lt is proved that this method can adapt to the time slot synchronization under the condition of lwo SNR and large frequency offset.It requires less hardware resources and has high signal detection probability.

关 键 词：多级级联滤波 频率步进搜索 WCDMA 时隙同步 

分 类 号：TN911.23[电子电信—通信与信息系统]