中圖分類號：TN914.3 文獻標志碼：A DOI: 10.16157/j.issn.0258-7998.234354 中文引用格式： 李展雄,，劉麗萍,，方亮，等. 基于信噪比系數(shù)的雙閾值分布式協(xié)作算法的研究[J]. 電子技術應用,，2024,，50(1)：55-59. 英文引用格式： Li Zhanxiong，Liu Liping,，F(xiàn)ang Liang,，et al. Research on distributed cooperative algorithm based on signal-to-noise ratio coefficient with double thresholds[J]. Application of Electronic Technique,，2024，50(1)：55-59.
Research on distributed cooperative algorithm based on signal-to-noise ratio coefficient with double thresholds
Li Zhanxiong,，Liu Liping,，F(xiàn)ang Liang，Lv Jiafeng,，Wang Ci
School of Electronic-Electrical Engineering,， Ningxia University， Yinchuan 750021,， China
Abstract： In order to solve the problem that the traditional energy detection algorithm has poor detection performance due to the fixed decision threshold when the signal-to-noise ratio is low, this paper studies a dual-threshold cooperative energy detection algorithm that can change with the signal-to-noise ratio coefficient. The threshold value of the algorithm is adaptively adjusted according to the signal-to-noise ratio coefficient. At the same time, considering that the centralized cooperation is incompetent due to the problem of over-reliance on the fusion center, the distributed cooperation method is used to integrate the information detected by each cognitive user. The energy value is compared with a dynamic threshold. Finally, it is proved that the algorithm has better detection performance comparing with the two traditional algorithms.
Key words : energy detection,；signal-to-noise ratio coefficient；distributed cooperation,；cognitive user
