63 search results - page 4 / 13 » Recovery of sparse perturbations in Least Squares problems |
ICASSP
2009
IEEE
14 years 2 months ago
2009
IEEE
In recent work, we studied the problem of causally reconstructing time sequences of spatially sparse signals, with unknown and slow time-varying sparsity patterns, from a limited ...
TSP
2010
13 years 2 months ago
2010
We consider the problem of recursively and causally reconstructing time sequences of sparse signals (with unknown and time-varying sparsity patterns) from a limited number of noisy...
SIAMSC
2011
13 years 2 months ago
2011
Given a certain function f, various methods have been proposed in the past for addressing the important problem of computing the matrix-vector product f(A)b without explicitly comp...
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
This paper presents a novel time-adaptive estimation technique by revisiting the classical Wiener-Hopf equation. Any convex and not necessarily differentiable function can be used...
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
In this paper, we consider the problem of geolocating an unknown emitter by a satellite cluster. We formulate the problem as the maximum likelihood location estimation by using TD...