J4 ›› 2011, Vol. 38 ›› Issue (6): 173-178.doi: 10.3969/j.issn.1001-2400.2011.06.029

• 研究论文 • 上一篇    下一篇



  1. (1. 空军工程大学 工程学院,陕西 西安  710038;
    2. 航空电子系统综合技术国防科技重点实验室,上海  200233)
  • 收稿日期:2011-05-23 出版日期:2011-12-20 发布日期:2011-11-29
  • 通讯作者: 宋晓鸥
  • 作者简介:宋晓鸥(1984-),女,空军工程大学博士研究生,E-mail: e_miracle@163.com
  • 基金资助:


Novel CUSUM spectrum sensing algorithm in cognitive UWB

SONG Xiao'ou1;XIANG Xin1;BI Duyan1;CHEN Shunfang2

  1. (1. Engineering College, Air Force Eng. Univ., Xi'an  710038, China;
    2. National Key Lab. of Sci. and Tech. on Avionics System Integration, Shanghai  200233, China)
  • Received:2011-05-23 Online:2011-12-20 Published:2011-11-29
  • Contact: SONG Xiao'ou



关键词: 认知超宽带, 频谱感知, 累加和, 检测延迟


A novel Cognitive UWB spectrum sensing algorithm is proposed and evaluated, which enables the detection of the low average SNR and low duty ratio signal with low complexity and small detection delay. An uniform probability density function of the low duty ratio received signal is constructed based on the characteristic of the UWB pulse signal. CUSUM test is introduced to implement the detection. Theoretical analysis indicates that the proposed algorithm is suitable for low duty ratio signal detection. Compared with the energy detection algorithm, the proposed algorithm conquers the SNR wall phenomenon, with superior detection delay performance. Furthermore, the theoretical analysis results are proved by simulations.

Key words: cognitive UWB (CUWB), spectrum sensing, cumulate sum (CUSUM), detection delay


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