DS-UWB中的一种基于检测反馈-存储的门限值设置方法  

Threshold Setting Method for DS-UWB Timing Acquisition Systems

作　　者：王洪江[1] 韦岗[1] 姜胜明[1] 季飞[1] 

机构地区：[1]华南理工大学电子与信息学院,广州510640

出　　处：《科学技术与工程》2007年第13期3245-3248,共4页Science Technology and Engineering

基　　金：国家自然科学基金(60672065)(60402014);广东省自然科学基金(31390)的资助

摘　　要：研究了直扩超宽带通信系统的关键技术——定时捕获系统,提出了一种基于检测反馈和存储的门限值设置方法,理论分析和仿真结果表明该方法能有效地提高直扩超宽带同步系统的定时捕获概率,大大减少平均定时捕获时间,具有很强的抗定时抖动性能。The key technology of the timing acquisition systems is investigated for DS-UWB communications and proposed a timing acquisition method based on the detection-feedback technique. The block diagram has been shown. The performance analysis shows that our proposed scheme can improve the performance of DS-UWB timing acquisition systems, including the acquisition speed, accuracy and robustness. Moreover, the added complexity can be neglected comparing to the added performance.

关 键 词：直扩超宽带系统(DS—UWB) 定时捕获 门限值 检测反馈 定时抖动 

分 类 号：TN925.93[电子电信—通信与信息系统]