• DocumentCode
    3067352
  • Title

    Functional properties of MMSE

  • Author

    Wu, Yihong ; Verdú, Sergio

  • Author_Institution
    Dept. of Electr. Eng., Princeton Univ., Princeton, NJ, USA
  • fYear
    2010
  • fDate
    13-18 June 2010
  • Firstpage
    1453
  • Lastpage
    1457
  • Abstract
    We show that the minimum mean-square error (MMSE) of estimating the input based on the channel output is a concave functional of the input-output joint distribution, and its various regularity properties are explored. In particular, the MMSE in Gaussian channels is shown to be weakly continuous in the input distribution and Lipschitz continuous with respect to the quadratic Wasserstein distance for peak-limited inputs. Regularity properties of mutual information are also obtained and some connections with rate-distortion theory are also drawn.
  • Keywords
    Gaussian channels; channel estimation; least mean squares methods; Gaussian channels; MMSE; channel estimation; channel input-output joint distribution; minimum mean square error; quadratic Wasserstein distance; Additives; Channel capacity; Data processing; Distributed computing; Gaussian channels; Gaussian noise; Mean square error methods; Mutual information; Rate-distortion; Signal to noise ratio;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Information Theory Proceedings (ISIT), 2010 IEEE International Symposium on
  • Conference_Location
    Austin, TX
  • Print_ISBN
    978-1-4244-7890-3
  • Electronic_ISBN
    978-1-4244-7891-0
  • Type

    conf

  • DOI
    10.1109/ISIT.2010.5513606
  • Filename
    5513606