The author studied a method of accelerating the LMS (least mean squares) algorithm in the context of echo cancellation and modified it to deal with the case in which the echo path loss is unknown beforehand. Several ways to remedy the stability problem resulting from an inaccurate estimation of the optimal gain are studied. The result is a switched-gain approach in which the adaptation gain switches between zero and a value determined from some signal statistics. The author also discusses the implementation of input whitening. Some topics for further research are suggested.
|Number of pages||5|
|Journal||Conference Record - International Conference on Communications|
|State||Published - 1 Dec 1986|