基于协方差理论的信号检测改进算法OA
An improved signal detection algorithm based on covariance
为了克服能量检测算法易受信噪比不确定性影响的缺点,采用协方差检测算法进行信号检测,对算法检测阈值进行优化,提出一种基于检测误差最小的改进的协方差算法.改进的协方差检测算法不仅克服了能量检测算法的缺点,并且相比协方差检测算法,该算法在低信噪比下检测性能有所改善.仿真结果表明,在-20 dB低信噪比条件下,改进算法的检测概率能提高20％左右.
Energy detection algorithm is easy to be influenced by the noise uncertainly,so the covariance detection algorithm is adopted to detect signals,then the threshold is optimized,an improved algorithm is proposed based on the minimum detection error.The improved algorithm can not only overcome the disadvantages of energy detection algorithm,but also improve the detection performance compared with covariance detection algorithm.The simulation results…查看全部>>
邓璋;徐以涛;王乃超;张尧然
解放军理工大学通信工程学院,南京210007解放军理工大学通信工程学院,南京210007解放军理工大学通信工程学院,南京210007解放军理工大学通信工程学院,南京210007
信息技术与安全科学
能量检测协方差信噪比
energy detection covariance SNR
《桂林电子科技大学学报》 2013 (4)
259-263,5
国家973项目(2009CB320400)
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