DTR-UWB帧级快速低复杂度同步算法  

Fast and low-complexity frame-level synchronization for differential transmitted reference receivers

作　　者：聂淼[1] 张中兆[1] 

机构地区：[1]哈尔滨工业大学电子与信息工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2010年第11期1530-1533,共4页Journal of Harbin Engineering University

基　　金：国家自然科学基金资助项目(60432040)

摘　　要：超宽带通信系统同步的精确度是影响系统性能的关键问题,为减少差分传输引导波超宽带通信系统同步算法的平均捕获时间和提高同步算法的精确度,设计了一种变换同步算法积分区间和门限值比较法相结合的帧级快速同步算法.同步算法在保证精确度的同时,减少了算法的平均捕获时间.依据马尔科夫理论和Z变换理论,结合算法的信号流程图,从理论上推导了同步算法的平均捕获时间和平均捕获概率.通过仿真,验证了同步算法优于已有的帧级同步算法.The synchronization accuracy of a UWB communication system is the key issue affecting system performance. To reduce the average acquisition time of the synchronization algorithms for a DTR-UWB communication system synchronization algorithm while improving the accuracy, a fast frame-level synchronization algorithm was designed which combined the transformation of an algorithm interval with the comparison threshold level. The synchro- nization algorithm ensured accuracy and reduced the average acquisition time of the algorithm. Based on the Markov theory and the Z transformation theory, the signal flow chart of the algorithm along with the average acquisition time and the average capture probability was theoretically derived. The simulations verify that the new synchronization algorithm is superior to the existing frame-level synchronization method.

关 键 词：差分传输参考波 超宽带 帧级同步 

分 类 号：TN929.5[电子电信—通信与信息系统]