Space-time block coding for single-carrier block transmission DS-CDMA downlink

Abstract : The combination of space-time block coding (STBC) and direct-sequence code-division multiple access (DS-CDMA) has the potential to increase the performance of multiple users in a cellular network. However, if not carefully designed, the resulting transmission scheme suffers from increased multiuser interference (MUI), which dramatically deteriorates the performance. To tackle this MUI problem in the downlink, we combine two specific DS-CDMA and STBC techniques, namely single-carrier block transmission (SCBT) DS-CDMA and time-reversal STBC. The resulting transmission scheme allows for deterministic maximum-likelihood (ML) user separation through low-complexity code-matched filtering, as well as deterministic ML transmit stream separation through linear processing. Moreover, it can achieve maximum diversity gains of N/sub T/N/sub R/(L+1) for every user in the system, irrespective of the system load, where N/sub T/ is the number of transmit antennas, N/sub R/ the number of receive antennas, and L the order of the underlying multipath channels. In addition, it turns out that a low-complexity linear receiver based on frequency-domain equalization comes close to extracting the full diversity in reduced, as well as full load settings. In this perspective, we also develop two (recursive) least squares methods for direct equalizer design. Simulation results demonstrate the outstanding performance of the proposed transceiver compared to competing alternatives.
Type de document :
Article dans une revue
IEEE Journal on Selected Areas in Communications, Institute of Electrical and Electronics Engineers, 2003, 21 (3), pp.350-361. <10.1109/JSAC.2003.809630>
Liste complète des métadonnées


https://hal.archives-ouvertes.fr/hal-00187763
Contributeur : Luc Deneire <>
Soumis le : jeudi 15 novembre 2007 - 11:26:15
Dernière modification le : mercredi 25 février 2009 - 16:38:41
Document(s) archivé(s) le : lundi 12 avril 2010 - 02:17:21

Fichier

01192173.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

Citation

F. Petre, Geert Leus, Luc Deneire, M.G.E. Engels, M. Moonen, et al.. Space-time block coding for single-carrier block transmission DS-CDMA downlink. IEEE Journal on Selected Areas in Communications, Institute of Electrical and Electronics Engineers, 2003, 21 (3), pp.350-361. <10.1109/JSAC.2003.809630>. <hal-00187763>

Partager

Métriques

Consultations de
la notice

110

Téléchargements du document

207