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中文摘要：
提出一种基于修正码片波形自相关方案的DS-UWB系统同步算法;首先利用并行相关器组,采用等间隔码片波形能量累积的方法来修正本地相关码片波形模板首先获得系统的码片同步,然后在已知码片同步的基础上利用PN码滑动相关捕获方法获得系统的PN码同步;仿真结果表明,在系统用户数为5,扩频增益为9时,算法的同步时间为2.5μs,与“多径超宽带系统同步时间在ms级”的结论不同,该算法能够实现μs级的同步;该方法是一种能够适应UWB多径信道环境的行之有效的DS-UWB系统同步捕获算法。
英文摘要：
A scheme of DS-UWB system acquisition is proposed,based on a modified chip waveform autocorrelation algorithm.First,the chip synchronization was achieved by paralleled correlators with equal interval chip waveform energy cumulation algorithm.Once the chip synchronization achieved,PN code synchronization can be achieved by serial correlator easily.The simulation results show that when the number of the system users is 5 and spread spectrum plus is 9,the acquisition time is 2.5μs.The results indicate that the proposed scheme can achieve satisfactory synchronization performance in DS-UWB channel.The simulation showed that the proposed method could achieve synchronization of DS-UWB system fast and accurately in several microseconds
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