Knowledge-Aided Covariance Matrix Estimation and Adaptive Detection in Compound-Gaussian Noise
Francesco Bandiera, Olivier Besson, Giuseppe Ricci · IEEE Transactions on Signal Processing · 2010
Let x be a signal to be sparsely decomposed over a redundant dictionary A, i.e., a sparse coefficient vector s has to be found such that x = As. It is known that this problem is inherently unstable against