We consider the problem of blind (i.e., without training sequence) mitigation of both intersymbol interference (LSI) and multiple-access interference (MAI) in the uplink of asynchronous direct-sequence code-division multiple-access (DS-CDMA) systems transmitting over time-dispersive channels. The proposed method exploits the knowledge (certainly available at the base-station site) of the spreading codes belonging to a group of the active users to directly extract the detector parameters from the received data, without requiring an explicit channel identification step. Simulation results show that the proposed group-blind receiver outperforms the existing blind methods, for small to moderate values of the sample-size.


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    Titel :

    Direct group-blind multiuser detection for DS-CDMA systems in dispersive channels


    Beteiligte:
    Gelli, G. (Autor:in) / Milano, S. (Autor:in) / Paura, L. (Autor:in) / Verde, F. (Autor:in)


    Erscheinungsdatum :

    2003-01-01


    Format / Umfang :

    437892 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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