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To increase the total multicast bit rate, this algorithm jointly uses the LP\u2010OFDM modulation technique and an adaptation of the OFDM\u2010based multicast approaches to exploit the transmission link diversities of users. The LP technique applied to multicast OFDM systems with zero forcing (ZF) detector has already proved its ability to increase the unirate multicast system bit rate in a power line communication (PLC) context. The new MMSE detector and the new related bit\u2010loading algorithm are developed to enhance the ZF detector results. To improve both the bit rate and the fairness among multicast users, the utilization of the LP component in multirate multicast systems is then investigated. Simulations are run over indoor PLC channels, and it is shown that the proposed LP\u2010based methods outperform the OFDM\u2010based methods in terms of total bit rate and fairness index for both unirate and multirate multicast systems. 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