We investigate strategies for user cooperation in the uplink of a direct-sequence code-division multiple-access (DS/CDMA) network. We consider two repetition-based relay schemes, namely decode-and-forward (DAF) and amplify-and-forward (AAF) and we provide performance analysis of various exact and blind linear multiuser detection strategies in terms of the (asymptotic) signal-to-interference-plus-noise ratio (SINR) and the bit error rate (BER). Our results show that, on one hand, AAF is more robust to the multiple access interference (MAI), achieving better performance than DAF, especially if a simple matched-filter (MF) receiver is employed at the relay side. On the other hand, DAF is more amenable to blind multiuser detection when some system parameters are unknown at the base station (BS).

Multiuser detection for cooperative networks and performance analysis / Venturino, L.; Wang, X.; Lops, M.. - (2005), pp. 940-944. (Intervento presentato al convegno 2005 IEEE 6th Workshop on Signal Processing Advances in Wireless Communications tenutosi a New York (USA) nel 5-8 giugno 2005) [10.1109/SPAWC.2005.1506278].

Multiuser detection for cooperative networks and performance analysis

M. Lops
2005

Abstract

We investigate strategies for user cooperation in the uplink of a direct-sequence code-division multiple-access (DS/CDMA) network. We consider two repetition-based relay schemes, namely decode-and-forward (DAF) and amplify-and-forward (AAF) and we provide performance analysis of various exact and blind linear multiuser detection strategies in terms of the (asymptotic) signal-to-interference-plus-noise ratio (SINR) and the bit error rate (BER). Our results show that, on one hand, AAF is more robust to the multiple access interference (MAI), achieving better performance than DAF, especially if a simple matched-filter (MF) receiver is employed at the relay side. On the other hand, DAF is more amenable to blind multiuser detection when some system parameters are unknown at the base station (BS).
2005
0780388674
Multiuser detection for cooperative networks and performance analysis / Venturino, L.; Wang, X.; Lops, M.. - (2005), pp. 940-944. (Intervento presentato al convegno 2005 IEEE 6th Workshop on Signal Processing Advances in Wireless Communications tenutosi a New York (USA) nel 5-8 giugno 2005) [10.1109/SPAWC.2005.1506278].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/750491
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