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      Complex-valued sparse representation based on smoothed ℓ0 norm

      , Article 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP, Las Vegas, NV, 31 March 2008 through 4 April 2008 ; 2008 , Pages 3881-3884 ; 15206149 (ISSN) ; 1424414849 (ISBN); 9781424414840 (ISBN) Mohimani, G. H ; Babaie Zadeh, M ; Jutten, C ; Sharif University of Technology
      2008
      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. ©2008 IEEE  
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