Generalized Matched Subspace Filter for Nonindependent Noise Based on ICA
Juan J. Moragues, Luis Vergara, Jorge Gosálbez Castillo · IEEE Transactions on Signal Processing · 2011
We propose a generalization of the matched subspace filter for the detection of unknown signals in a background of non-Gaussian and nonindependent noise. The generalization is based on a modification of the Rao test by including a linear transformation derived from independent component analysis (ICA). Receiver operating characteristic (ROC) curves computed for simulated examples illustrate the significant improvement achieved with the generalized solution.