On feed-through terms in the lms algorithm

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Date
2004
DOI
Open Access Location
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Publisher
Massey University
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Abstract
The well known least mean squares (LMS) algorithm is studied as a control system. When applied in a noise canceller a block diagram approach is used to show that the step size has two upper limits. One is the conventional limit beyond which instability results. The second limit shows that if the step size is chosen to be too large then feed-through terms consisting of signal times noise will result in an additive term at the noise canceller output. This second limit is smaller than the first and will cause distortion at the noise canceller output.
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Keywords
Least mean squares algorithm, Noise cancellation
Citation
Moir, T.J. (2004), On feed-through terms in the lms algorithm, Research Letters in the Information and Mathematical Sciences, 6, 71-82