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Efficient μ-law improved proportionate affine projection algorithm for echo cancellation

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2 Author(s)
Yang, J. ; Dept. of Electr. & Comput. Eng., Univ. of Minnesota, Minneapolis, MN, USA ; Sobelman, G.E.

For echo cancellation, the proportionate affine projection algorithm (APA) has been proposed to take advantage of the sparseness of the echo path. In this reported work, the μ-law proportionate technique is applied to the APA combined with a recently proposed structure having a memory of the proportionate step-size control matrices. Simulation results show that this new algorithm, termed the μ-law memorised improved proportionate APA (MMIPAPA), as well as its segmented implementation (SMIPAPA), yields a further performance improvement while maintaining low computational complexity.

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Electronics Letters  (Volume:47 ,  Issue: 2 )