• DocumentCode
    1336192
  • Title

    On the optimum number of OFDM subcarriers in fast Rayleigh fading channels

  • Author

    Huang, L.C. ; Tjhung, T.T. ; Lu, Jun

  • Author_Institution
    Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 119260
  • Volume
    3
  • Issue
    2
  • fYear
    2001
  • fDate
    6/1/2001 12:00:00 AM
  • Firstpage
    1
  • Lastpage
    6
  • Abstract
    In this paper, we consider the problem of selecting the number of subcarriers for an OFDM-MDPSK system when the delay spread of a multipath fading channel varies with the existing mobile environment. In our recent analysis [1], we have shown that there are two distinct BER performance behaviors dependent on whether the guard interval is larger or smaller than the delay spread. In this paper, by associating a probability that relates randomly varying channel delay spread to the designed guard period in the average BER computation, we present a step by step procedure to select the most suitable number of subcarriers, and other important parameters for the OFDM-MDPSK system.
  • Keywords
    Bit error rate; Delays; Discrete Fourier transforms; Educational institutions; Fading; Modulation; OFDM; MDPSK; OFDM; bit error rate; fast fading Rayleigh channel;
  • fLanguage
    English
  • Journal_Title
    Communications and Networks, Journal of
  • Publisher
    ieee
  • ISSN
    1229-2370
  • Type

    jour

  • DOI
    10.1109/JCN.2001.6596858
  • Filename
    6596858
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1336192