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ICASSP
2009
IEEE

On ICA of improper and noncircular sources

10 years 4 months ago
On ICA of improper and noncircular sources
We provide a review of independent component analysis (ICA) for complex-valued improper and noncircular random sources. An improper random signal is correlated with its complex conjugate, and a noncircular random signal has a rotationally variant probability distribution. We present methods for ICA using second-order statistics, and higherorder statistics. For ICA based on second-order statistics, we emphasize the key role played by the circularity coefficients, which are the canonical correlations between the source and the complex conjugate. For ICA based on higher-order statistics, we show how to extend algorithms for real-valued ICA to the complex domain using Wirtinger calculus.
Peter J. Schreier, Tülay Adali, Louis L. Scha
Added 21 May 2010
Updated 21 May 2010
Type Conference
Year 2009
Where ICASSP
Authors Peter J. Schreier, Tülay Adali, Louis L. Scharf
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