| DS-UWB信号参数估计的自相关算法 |
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| 引用本文： | 杨柳飞,张天骐,李雪松,代少升.DS-UWB信号参数估计的自相关算法[J].电视技术,2009,33(4). |
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| 作者姓名： | 杨柳飞 张天骐 李雪松 代少升 |
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| 作者单位： | 重庆邮电大学,信号处理与片上系统研究所,重庆,400065 |
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| 基金项目： | 国家自然科学基金一中国工程物理研究院NSAF联合基金，国家自然科学基金，重庆市科委自然科学基金，重庆市教委自然科学基金 |
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| 摘 要： | 利用DS-UWB信号周期平穗的特性,根据DS-UWB信号与高斯白噪声在自相关域上的差异,提出了一种DS-UWB信号参数估计的自相关算法.该算法可以在自相关积分时间不同的情况下,准确地估计DS-UWB信号伪码周期和伪码码片宽度,为下一步实现DS-UWB信号的细微特征分析提供了参考.理论分析和仿真实验都证明了该方法在低信噪比下非常有效.
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| 关 键 词： | DS-UWB信号 伪码序列 伪码周期 伪码码片宽度 |
Parameter Estimation of DS-UWB Signals by Using Autocorrelation Technique |
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| YANG Liu-fei,ZHANG Tian-qi,LI Xue-song,DAI Shao-sheng.Parameter Estimation of DS-UWB Signals by Using Autocorrelation Technique[J].Tv Engineering,2009,33(4). |
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| Authors: | YANG Liu-fei ZHANG Tian-qi LI Xue-song DAI Shao-sheng |
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| Affiliation: | Institute of Signal Processing and System on Chip;Chongqing University of Posts and Telecommunications;Chongqing 400065;China |
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| Abstract: | According to the difference between Direct Sequence spread spectrum ultra wideband (DS-UWB) signals and Guassion noise in correlation domain based on the characteristics of cycle-stationary signals, a correlation method using parameter estimation is proposed. This method can estimate accurately the period and chip interval of Pseudo Noise(PN) sequence under different integral duration of correlation. The estimated period and chip interval of PN sequence can be used to analyze the fine feature of DS-UWB sign... |
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| Keywords: | DS-UWB signals PN sequence period of PN sequence chip interval of PN sequence |
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