| 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。 |
| 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 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目（6110128） |
|
| An improved CUSUM algorithm for UWB pulse signal detection |
| SONG Xiao-ou |
| () |
| 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 distri
bution after multi-path fading channel is analyzed. Then an improved
CUSUM al
gorithm adaptive to UWB pulse signal detection is proposed. Both theoretical
analysis and simulations prove that the improved algorithm conq
uers the SNR wall phenomenon, with small detection delay and low realization com
plexity. Under the same false alarm constraint, the detection performance of p
roposed algorithm is much better than that of energy detection. |
| Key words: ultra-wide band (UWB) pulse quickest detection cumulative sum (CUSUM) algorit
hm multi-path fading channel detection delay probability |
《电讯技术》编辑部 