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| On separability and separating method of nonlinear mixed signals |
| Liu Ju①; Nie Kaibao①; He Zhenya② |
| ①Dept. of Electronic Engineering Shftndong Univeristy Jinan 250100 China;②Dept. of Radio Eng., Southeast University Nanjing 210096 China |
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Abstract The separability and separating conditions for mixed signals are analyzed in this paper. The limitation of nonlinear blind source separation methods is proposed. A new nonlinear BSS approach is developed by applying Edgeworth expansion and adaptive cumulant estimation into information back propagation algorithm. Computer simulation shows the validity of the proposed algorithm in some ad hoc model. A comparison with the Gram-Charlier expansion method is given.
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Received: 12 July 2001
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2003, Vol. 25 
