快速定时同步是超宽带(UWB)通信中的关键技术。针对PPM—UWB信号,通过对同步模板信号的合理修改,使用TDT(timing with dirty templates)算法,获得PPM信号的快速同步。在非数据辅助(NDA)和数据辅助(DA)模式下对该算法进行了理论分析,仿真结果表明该算法结构简单,同步精度灵活可变,性能良好。
The timing synchronization technique is the key point in UWB system. Applying the Algorithms of DTD, the fast synchronization is obtained by amending the synchronous template signal. This Algorithms is analysed on theory respectively in NDA and DA mode. It is the simple in framework and flexible in synchronization precision. The simulation results show that applying this Algorithms could achieve good performance.