Sittichivapak, Suvepon

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Sittichivapak, Suvepon
Alternative Name
Sittichivapak, S.
Sittichivapak, Suvepol
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Email
suvepon.si@kmitl.ac.th

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    Item type:Publication,
    Performance analysis of multi-user detection of slow frequency hopping multicarrier DS-CDMA over nakagami fading channels
    (2003-01-01)
    Promasa, Priwann
    ;
    Sittiwatjanaiand, Pisako
    ;
    Sittichivapak, Suvepon
    We propose a new multi-user detection of slow frequency hopping multicarrier direct- sequence code division multiple access technique (Multi-user detection of SFW MC DS-CDMA). The frequency hopping pattern are controlled by asset of constantweight code. Consequently, multirate communication can be implemented by selecting the correspandence set of constant-weight code. We assume the system operates in multipaths fading environment and a decorrelating receiver structure, The receiver has an explicit knowledge of the associzted ftequencyhopping (FH) pattems invoked. The system's performance is evaluated using Nakagami fading channels with numerical method. Furtlmmore the performance of the Multi-user detection of SFWMC DS-CDMA system is compared to the conventional Multi-user detection of direct-sequence code division multiple access system ( Multi-user detection of DSCDMA).
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    Item type:Publication,
    Performance of multiuser detection combining with multicarrier on nakagami fading channels for DS/CDMA transmission systems
    (2003-01-01)
    Kothirani, Apinya
    ;
    Sirimak, Thanest
    ;
    Sittichivapak, Suvepon
    This paper combines multiuser detection and multicamer signaling technique for direct sequence code division multiple access system (DSKDMA). These techniques are analyzed in multipath fading environment. - The receiver provides a decorrelating detector for each carrier and the outputs of the correlators are combined with a maximal-ratio combiner. The system perfomnce is evaluated over nakagami fading channels in the presence of partial band interference with numerical method. The system performance of multiuser detection combining multi-camer DS/CDMA with the conventional single-carrier decorrelating detector was also compared.