A Blind Method for Estimating the Number of Signal Sources
Xin Zhang · Systems engineering and electronics · 2001
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.\;