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IEICE TRANSACTIONS on Communications

Automatic Tap Assignment in Sub-Band Adaptive Filter

Zhiqiang MA, Kenji NAKAYAMA, Akihiko SUGIYAMA

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Summary :

An automatic tap assignment method in sub-band adaptive filter is proposed in this letter. The number of taps of the adaptive filter in each band is controlled by the mean-squared error. The numbers of taps increase in the bands which have large errors, while they decrease in the bands having small errors, until residual errors in all the bands become the same. In this way, the number of taps in a band is roughly proportional to the length of the impulse response of the unknown system in this band. The convergence rate and the residual error are improved, in comparison with existing uniform tap assignment. Effectiveness of the proposed method has been confirmed through computer simulation.

Publication
IEICE TRANSACTIONS on Communications Vol.E76-B No.7 pp.751-754
Publication Date
1993/07/25
Publicized
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DOI
Type of Manuscript
Special Section LETTER (Special Section of Letters Selected from the 1992 IEICE Fall Conference and the 1993 IEICE Spring Conference)
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