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# Nonnegative signal reconstruction from compressive samples via a difference map ECME algorithm

@article{Qiu2011NonnegativeSR, title={Nonnegative signal reconstruction from compressive samples via a difference map ECME algorithm}, author={Kun Qiu and Aleksandar Dogandzic}, journal={2011 IEEE Statistical Signal Processing Workshop (SSP)}, year={2011}, pages={561-564} }

- Published 2011 in 2011 IEEE Statistical Signal Processing Workshop…

We develop an approximate maximum likelihood (ML) scheme for reconstructing nonnegative sparse signals from compressive samples. The measurements follow an underde-termined linear model, where the regression vector is modeled as the sum of an unknown deterministic nonnegative signal with sparse transform coefficients and a zero-mean white Gaussian component with an unknown variance. We first derive an expectation-conditional maximization either (ECME) algorithm that aims at maximizing the… CONTINUE READING