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Author: search.filters.author.Rattanakoch, W.Subject: search.filters.subject.Multiaccess communication

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    Capacity analysis of forward-link in DS-CDMA cellular system with power control
    (2002-01-01)
    Longpichai, S.
    ;
    Rattanakoch, W.
    ;
    Kidakorn, P.
    ;
    Kimpan, C.
    ;
    Pin-Ngern, O.
    In this paper, we analyze the forward-link capacity of a cellular DS-CDMA system, especially the effects of power control, path loss exponent (γ) and orthogonality factor (f<inf>0</inf>) of multipath propagation on the system. The problem of finding an optimum power control factor (n) is evaluated. According to n, the proper threshold distance is estimated for optimum performance. With these factors, the numerical results show that the capacity is reduced by changing f<inf>0</inf> from 0.7 to 0.2 and γ from 5 to 3.
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    Outage probability, throughput and delay analysis of cellular DS-CDMA system in the presence of correlated signal and interference
    (2002-01-01)
    Rattanakoch, W.
    ;
    Kimpan, C.
    ;
    Pin-Ngern, Ouen
    ;
    Noppanakeepong, S.
    In this paper, we evaluate the performance of a cellular DS-CDMA system, by taking into account the correlation between signal and interference, to determined outage probability, throughput and delay for the reverse link with power control error. The numerical results show that when the correlation is considered the outage probability decreased, the throughput value increased, that is, the performance can be achieved.