2 . the fast fixed - point algorithm has been studied . we firstly consider one unit algorithm , extracting one original signal every time under instantaneous mixtures model 先分析了一次分離出一個源信號的單源定點算法,然后導出了分離多個源信號的算法。
Finally we study a modified algorithm , which applies the fast fixed - point algorithm for complex signals to blind signals eparation in frequency domain . it ’ s a one - unit algorithm . to prevent converging to the same signal , the deflation algorithm is used to separate signals one by one 4 .結合上述卷積混合信號的頻域分離算法,研究了一個改進單源算法,將復數快速固定點算法應用到頻域加速收斂,為了防止算法收斂于同一信號,利用一種抽氣技術,這樣可一次分離出一個信號,實現卷積混合信號分離。