• DocumentCode
    1398768
  • Title

    Comments on "OFDM Transmission for Time-Based Range Estimation"

  • Author

    Martin, Richard K.

  • Author_Institution
    Dept. of Electr. & Comput. Eng., Air Force Inst. of Technol. (AFIT), Wright-Patterson AFB, OH, USA
  • Volume
    18
  • Issue
    2
  • fYear
    2011
  • Firstpage
    144
  • Lastpage
    144
  • Abstract
    The letter by Wang and Fattouche makes the claim that the Cramer-Rao lower bound (CRLB) for range estimation using orthogonal frequency division multiplexing (OFDM) signals is 4.8 dB lower than that of pseudo-noise (PN) signals. However, this is not the case. The sole reason for the 4.8 dB gain in the said letter is due to the fact that the authors implicitly used an uncommon pulse shaping filter in the digital-to-analog conversion process for the PN signal.
  • Keywords
    digital-analogue conversion; frequency division multiplexing; pulse shaping; Cramer-Rao lower bound; OFDM signals; OFDM transmission; digital-to-analog conversion process; gain 4.8 dB; orthogonal frequency division multiplexing; pseudo-noise signals; pulse shaping filter; time-based range estimation; Approximation methods; Bandwidth; Estimation; Materials; OFDM; Shape;
  • fLanguage
    English
  • Journal_Title
    Signal Processing Letters, IEEE
  • Publisher
    ieee
  • ISSN
    1070-9908
  • Type

    jour

  • DOI
    10.1109/LSP.2010.2098399
  • Filename
    5661807
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1398768