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).File | Dimensione | Formato | |
---|---|---|---|
spawc2005.pdf
non disponibili
Dimensione
948.99 kB
Formato
Adobe PDF
|
948.99 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.