Increase in Multicast OFDM Data Rate in PLC Network using Adaptive LP-OFDM

Ali Maiga (1) , Jean-Yves Baudais (2) , Jean-François Hélard (2)

1 IETR - Institut d'Electronique et de Télécommunications de Rennes
2 IETR - Institut d'Électronique et des Technologies du numéRique

Linear precoding (LP) technique applied to OFDM systems has already proved its ability to significantly increase the system throughput in a powerline communication (PLC) context. In this paper, we propose resource allocation algorithms based on the LP technique to increase the multicast OFDM systems bit rate. The conventional multicast capacity is limited by the user which experiences the worst channel conditions. To increase the multicast bit rate, these proposed algorithms assign subcarriers and bits to different multicast users. Simulations are run over PLC channels and it is shown that the proposed solutions offer a bit rate gain up to 37% compared to the conventional multicast bit rate.

Domaines: Réseaux et télécommunications [cs.NI]; Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Ali Maiga, Jean-Yves Baudais, Jean-François Hélard. Increase in Multicast OFDM Data Rate in PLC Network using Adaptive LP-OFDM. IEEE ICAST, Dec 2009, Accra, Ghana. pp.384 - 389. ⟨hal-00444406⟩