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.

Direct group-blind multiuser detection for DS-CDMA systems in dispersive channels / Gelli, Giacinto; Milano, S; Paura, Luigi; Verde, Francesco. - STAMPA. - 1:(2003), pp. 375-380. (Intervento presentato al convegno IEEE International Symposium on Image and Signal Processing and Analysis (ISPA'2003) tenutosi a Roma (Italia) nel Settembre 2003) [10.1109/ISPA.2003.1296926].

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

GELLI, GIACINTO;PAURA, LUIGI;VERDE, FRANCESCO
2003

Abstract

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.
2003
953184061X
Direct group-blind multiuser detection for DS-CDMA systems in dispersive channels / Gelli, Giacinto; Milano, S; Paura, Luigi; Verde, Francesco. - STAMPA. - 1:(2003), pp. 375-380. (Intervento presentato al convegno IEEE International Symposium on Image and Signal Processing and Analysis (ISPA'2003) tenutosi a Roma (Italia) nel Settembre 2003) [10.1109/ISPA.2003.1296926].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/185688
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