S. H. HsiehC. S. LuSOO-CHANG PEI2018-09-102018-09-102012-03http://scholars.lib.ntu.edu.tw/handle/123456789/373930Fast OMP: Reformulating OMP via iteratively refining ℓ 2-norm solutionsconference paper10.1109/ssp.2012.63196562-s2.0-84868258409