• DocumentCode
    3421411
  • Title

    Complex-valued sparse representation based on smoothed ℓ0 norm

  • Author

    Mohimani, G.H. ; Babaie-Zadeh, M. ; Jutten, C.

  • Author_Institution
    Dept. Of Electr. Eng., Sharif Univ. of Technol., Tehran
  • fYear
    2008
  • fDate
    March 31 2008-April 4 2008
  • Firstpage
    3881
  • Lastpage
    3884
  • 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 lscrdeg- 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.
  • Keywords
    signal representation; smoothing methods; FOCUSS algorithm; complex-valued signals; signal processing; smoothed lscrdeg norm; sparse representation; Communications technology; Computational efficiency; Decoding; Dictionaries; Equations; Iterative algorithms; Matching pursuit algorithms; Minimization methods; Signal processing algorithms; Statistics; complex-valued sparse component analysis; over-complete atomic decomposition;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
  • Conference_Location
    Las Vegas, NV
  • ISSN
    1520-6149
  • Print_ISBN
    978-1-4244-1483-3
  • Electronic_ISBN
    1520-6149
  • Type

    conf

  • DOI
    10.1109/ICASSP.2008.4518501
  • Filename
    4518501
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3421411