著者

山下 勝己 島袋 敦 Mohammaf R. Asharif

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.121, no.11, pp.1734-1739, 2001-11-01 (Released:2008-12-19)

参考文献数

8

被引用文献数

1

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In the echo cancellation, the double-talk situation when both the near-end signal and far-end signal are presented degrades the performance of echo cancellation with the LMS or the NLMS algorithms. In order to obtain an acceptable performance even in the presence of the double-talk, the authors proposed the expanded correlation least mean squares (ECLMS) algorithm but this algorithm does not give a fast conver-gence characteristics still. The purpose of this paper is to derive an orthogonal ECLMS algorithm with the lattice strucure in order to speed up the convergence characteristics and to reduce the computational load for the adaptation. The validity of this algorithm is evaluated by computer simulations in the echo cancelling problem.