Light-weight sequential sbl algorithm: An alternative to omp

RR Pote, BD Rao - ICASSP 2023-2023 IEEE International …, 2023 - ieeexplore.ieee.org
ICASSP 2023-2023 IEEE International Conference on Acoustics …, 2023ieeexplore.ieee.org
We present a Light-Weight Sequential Sparse Bayesian Learning (LWS-SBL) algorithm as
an alternative to the orthogonal matching pursuit (OMP) algorithm for the general sparse
signal recovery problem. The proposed approach formulates the recovery problem under
the Type-II estimation framework and the stochastic maximum likelihood objective. We
compare the computational complexity for the proposed algorithm with OMP and highlight
the main differences. For the case of parametric dictionaries, a gridless version is developed …
We present a Light-Weight Sequential Sparse Bayesian Learning (LWS-SBL) algorithm as an alternative to the orthogonal matching pursuit (OMP) algorithm for the general sparse signal recovery problem. The proposed approach formulates the recovery problem under the Type-II estimation framework and the stochastic maximum likelihood objective. We compare the computational complexity for the proposed algorithm with OMP and highlight the main differences. For the case of parametric dictionaries, a gridless version is developed by extending the proposed sequential SBL algorithm to locally optimize grid points near potential source locations and it is empirically shown that the performance approaches Cramer-Rao bound.´ Numerical results using the proposed approach demonstrate the support recovery performance improvements in different scenarios at a small computational price when compared to the OMP algorithm.
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