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The conventional resource allocation method in multicast OFDM systems adapts the physical layer to the worst user link conditions. In this paper, the authors propose new sub-carrier, bit and time slot allocation algorithms for multicast OFDM systems in indoor Power-Line Communication (PLC) context. To increase the multicast bit rate, these algorithms jointly use Linear Pre-coded OFDM (LP-OFDM) modulation technique and the conventional multicast approach to exploit the channel frequency selectivity experienced by each user. The LP technique applied to OFDM systems has already proved its ability to significantly increase the system throughput in a PLC context.
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