Complex-Valued Sparse Representation based on smoothed l0 norm

Abstract : In this paper we present an algorithm for complex-valued sparse representation. In our previous work we presented an algorithm for Sparse representation based on smoothed l0 norm. Here we extend that algorithm to complex-valued signals. The proposed algorithm is compared to FOCUSS algorithm and it is experimentally shown that the proposed algorithm is about two or three orders of magnitude faster than FOCUSS while providing approximately the same accuracy.
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G. Hosein Mohimani, Massoud Babaie-Zadeh, Christian Jutten. Complex-Valued Sparse Representation based on smoothed l0 norm. IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2008, Mar 2008, Las Vegas, Nevada, United States. pp.3881-3884. ⟨hal-00271364⟩

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