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[Author] Gyoo Geun KIM(1hit)

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  • Performance Evaluation for Cellular DS/CDMA System over Frequency-Selective Fading Channel

    Kyung Sup KWAK  Gyoo Geun KIM  

     
    PAPER

      Vol:
    E78-A No:7
      Page(s):
    785-794

    The performance of a cellular CDMA system operating over a flat-Rayleigh fading channel was previously considered, where it was assumed that the coherent bandwidth of a channel exceeded the spread bandwidth of a signal. This assumption may not be correct for a large degree of spreading. Therefore, the channel is modeled as exhibiting frequency-selectivity. In this paper, we consider a cellular radio DS/CDMA system operating over a frequency-selective fading channel. The base-to-mobile link is modeled as a Rician fading channel, with all signals transmitted from a given base station fading in unison. A similar model for the mobile-to-base link is used, except that the waveforms from all users are assumed to experience independent fading. The capacity of the cellular radio DS/CDMA system operating over a frequency-selective fading channel is evaluated and compared to that over a flat Rayleigh fading channel.