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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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Kernel principal component analysis (KPCA) for the de-noising of communication signals

Koutsogiannis, G. and Soraghan, J.J. (2002) Kernel principal component analysis (KPCA) for the de-noising of communication signals. In: 11th European Signal Processing Conference EUSIPCO'2002, 2002-09-03 - 2002-09-06.

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Abstract

This paper is concerned with the problem of de-noising for non-linear signals. Principal Component Analysis (PCA) cannot be applied to non-linear signals however it is known that using kernel functions, a non-linear signal can be transformed into a linear signal in a higher dimensional space. In that feature space, a linear algorithm can be applied to a non-linear problem. It is proposed that using the principal components extracted from this feature space, the signal can be de-noised in its input space.