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[Keyword] alias free(1hit)

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  • Multirate Repeating Method for Alias Free Subband Adaptive Filters

    Kiyoshi NISHIKAWA  Hitoshi KIYA  

     
    PAPER

      Vol:
    E85-A No:4
      Page(s):
    776-783

    In this paper, we propose the multirate repeating method for alias free subband adaptive filters (AFSAFs) and consider its convergence property. It is shown that we can adjust the convergence speed and the final error of the adaptive filters by varying its two parameters according to the requirements of the applications where the method is applied. The proposed method has two parameters, namely, the number of channel and the number of repetition. We show that by increasing the number of channels we can reduce the final error, and this property is preferred when the signal-to-noise ratio (SNR) is low. On the other hand, we show that the convergence speed of the AFSAF approaches to that of the affine projection algorithm (APA) by increasing the number of repetition. Through the computer simulations, we show the effect of the proposed method.