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| 基于分数采样的直扩信号滑动相关盲同步方法 | |
| 引用本文： | 张伟,唐斌,张健,周劼.基于分数采样的直扩信号滑动相关盲同步方法[J].系统仿真学报,2006,18(Z2):289-292. |
| 作者姓名： | 张伟 唐斌 张健 周劼 |
| 作者单位： | 1. 电子科技大学电工学院,四川,成都,610054;中物院电子工程研究所,四川,绵阳,621900 2. 电子科技大学电工学院,四川,成都,610054 3. 中物院电子工程研究所,四川,绵阳,621900 |
| 摘 要： | 详细分析了DS-SS信号在相关域的特征、性能,充分利用DS-SS信号扩频伪码的尖锐自相关特性和噪声的互相关特性,在已知PN码周期的前提下,提取一PN码周期DS-SS/BPSK信号作为已知PN码,采用分数采样构造滑动相关曲线,检测相关峰的位置实现DS-SS/BPSK信号盲同步,并对该算法的同步精度以及其适应的输入信噪比进行了分析。理论分析和仿真实验证明,盲同步精度与信噪比,伪码长度周期,分数采样系数,以及相关数据段密切相关。在一定的计算复杂性条件下,该方法可有效实现负信噪比(SNR<-17dB)DS-SS/BPSK信号盲粗同步,为快速进行精确同步奠定了基础。 |
| 关 键 词： | DS-SS/BPSK 滑动相关 盲同步 信噪比 分数采样 |
| 文章编号： | 1004-731X(2006)S2-0289-04 |
| 修稿时间： | 2006年5月9日 |
A new Approach to Blind Synchronization of DS-SS/BPSK Signal with sliding Correlation Based on Fractionally Sampling |
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| ZHANG Wei,TANG Bin,ZHANG Jian,ZHOU Jie.A new Approach to Blind Synchronization of DS-SS/BPSK Signal with sliding Correlation Based on Fractionally Sampling[J].Journal of System Simulation,2006,18(Z2):289-292. | |
| Authors: | ZHANG Wei TANG Bin ZHANG Jian ZHOU Jie |
| Institution: | ZHANG Wei1,2,TANG Bin1,ZHANG Jian2,ZHOU Jie2 |
| Abstract: | . Blind synchronization of received DS-SS/BPSK signal can achieve with sliding correlation based on fractionally sampling by taking full advantages of edge auto-correlation property of DS-SS pseudo-random noise (PN) code and picking-up one PN code time period DS-SS/BPSK signal as known PN code on given PN code period Theoretic analysis and simulation show that the synchronization precision is dependent on the signal to noise ratio (SNR), length period of PN code, fractionally sampling coefficient and data segments. Therefore, blind synchronization of received DS-SS/BPSK signal at lower SNR (<-17dB) can achieve efficiently at cost of a certain computation complexity. |
| Keywords: | DS-SS/BPSK sliding correlation blind Synchronization SNR fractionally sampling |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |