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Improved OFDM transmission with DF relaying and power allocation for a sum power constraint

Onglets principaux

Vandendorpe, Luc [UCL] Louveaux, Jérôme [UCL] Oguz, Onur Zaidi, Abdellatif [UCL]

In this paper we consider an OFDM (orthogonal frequency division multiplexing) transmission scheme with a relay. Symbols sent by the source may or may not be retransmitted during a second time slot by the relay, which is assumed to be of the decode-and-forward (DF) type. For each relayed carrier the destination implements maximum ratio combining. Assuming perfect CSI (channel state information) knowledge the paper investigates the power allocation problem in order to maximize the rate offered by the scheme. Compared to [VDLZ08], the second time slot is better used. The source is allowed to transmit a new symbol during this second time slot when the relay is inactive. The optimization is performed for a sum power constraint. The theoretical analysis is illustrated by numerical results.

Type de document Communication à un colloque (Conference Paper) – Présentation orale avec comité de sélection
Année de publication 2008
Conférence "3rd International Symposium on Wireless Pervasive Computing (ISWPC 2008)", Santorini, Greece (7-9 May 2008)
Peer reviewed oui
Document hôte "3rd International Symposium on Wireless Pervasive Computing (ISWPC 2008)"- 665-669 (ISBN : 978-1-4244-1652-3)
Editeur IEEE
Statut de la publication Publié
Affiliations UCL - FSA/ELEC - Département d'électricité
Liens
Référence bibliographique Vandendorpe, Luc ; Louveaux, Jérôme ; Oguz, Onur ; Zaidi, Abdellatif. Improved OFDM transmission with DF relaying and power allocation for a sum power constraint.3rd International Symposium on Wireless Pervasive Computing (ISWPC 2008) (Santorini, Greece, 7-9 May 2008). In: 3rd International Symposium on Wireless Pervasive Computing (ISWPC 2008), IEEE2008, p.665-669
Permalien http://hdl.handle.net/2078.1/67756