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.
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
