A Supplementary Review to Comprehend the Adaptive Algorithm

FUJII Kensaku

Bibliographic Information

Other Title

適応信号処理の副読本

Description

This report introduces a new viewpoint to interpret the principle of adaptive algorithms. According to this view point discovered from the first order IIR (infinite impulse response) filter expression of the NLMS (normalized least mean square) algorithm, the principle results in the set of three functions which are conversion to direct current, normalization by power and suppression of unnecessary alternating current components with a low pass filter, respectively. This interpretation of the principle shows that the convergence rate is enhanced by using the estimated coefficients of the adaptive filter and removing the old estimation error from the estimation process. This report finally presents three methods to remove the old estimation error and shows that these methods result in the NLMS, individually normalized LMS and the sub-RLS (recursive least squares) algorithms.

Journal

Technical report of IEICE. EA

Technical report of IEICE. EA 97 (284), 37-46, 1997-09-26

The Institute of Electronics, Information and Communication Engineers

Keywords

Details 詳細情報について

CRID: 1572543027292121344

NII Article ID: 110003284041

NII Book ID: AN10164817

Text Lang: ja

Data Source

CiNii Articles

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