A Blind Method for Estimating the Number of Signal Sources
A Blind Method for Estimating the Number of Signal Sources
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发表时间：
2001
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通讯作者：
Zhang Xin
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作者：
Zhang Xin
信号源数目估计是阵列信号处理，特别是盲信号处理中的一个重要问题。通过对信号空间进行主成分分析，提出了一种基于特征值分析的源数估计方法。针对信号的不同传输形式，即，瞬时混合和卷积混合，以及不同的信噪比。讨论了不同传感器数目对信号个数估计的影响。仿真结果表明，该算法具有较好的估计能力和可靠性
Estimation of the number of signal sources is an important problem in array signal processing, especially in blind signal processing. An estimation method of the number of sources based on eigenvalue analysis is presented in this paper by principal component analysis (PCA) of the signal space. The estimation accuracy of the algorithm is analyzed with respective to different transmission forms of signals, i.e., instantaneous mixture and convolutive mixture, and different signal-noise-ratio. The effect on the estimation of the number of signals using different number of sensors is discussed. Simulation results show that the presented algorithm has good estimation ability and reliability.\;