| 一种适用于超宽带脉冲信号检测的改进CUSUM算法 |
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| 引用本文： | 宋晓鸥. 一种适用于超宽带脉冲信号检测的改进CUSUM算法[J]. 电讯技术, 2013, 53(9): 1169-1174 |
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| 作者姓名： | 宋晓鸥 |
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| 作者单位： | 西安武警工程大学信息工程系,西安,710086 |
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| 基金项目： | 国家自然科学基金资助项目（6110128） |
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| 摘 要： | 将最快检测技术应用于超宽带脉冲信号检测中,具体采用改进的CUSUM(Cumulative Sum)算法来检测超宽带脉冲信号。首先分析了经过多径信道衰减后的超宽带脉冲信号概率分布特性,进一步提出了适用于超宽带脉冲信号检测的改进CUSUM算法。理论分析和仿真证明了所提改进算法性能优越且实现复杂度低。该算法克服了块检测算法的信噪比门限效应,且具有最优的检测延迟性能,相同虚警限制下其检测性能明显优于能量检测算法。
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| 关 键 词： | 超宽带脉冲 最快检测 累积和算法 多径信道 检测延迟概率 |
An improved CUSUM algorithm for UWB pulse signal detection |
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| SONG Xiao-ou. An improved CUSUM algorithm for UWB pulse signal detection[J]. Telecommunication Engineering, 2013, 53(9): 1169-1174 |
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| Authors: | SONG Xiao-ou |
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| Affiliation: | SONG Xiao-ou;Department of Information Engineering, Xican Armed Police Engineering University; |
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| Abstract: | Quickest detection technology or exactly the improved Cumulative Sum(CUSUM) is applied to ultra-wide band(UWB) signal detection. First, the UWB pulse signal distribution after multi-path fading channel is analyzed. Then an improved CUSUM algorithm adaptive to UWB pulse signal detection is proposed. Both theoretical analysis and simulations prove that the improved algorithm conquers the SNR wall phenomenon, with small detection delay and low realization complexity. Under the same false alarm constraint, the detection performance of proposed algorithm is much better than that of energy detection. |
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| Keywords: | ultra-wide band (UWB) pulse quickest detection cumulative sum (CUSUM) algorithm multi-path fading channel detection delay probability |
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