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A novel approach is here presented to embed a low-priority data stream into a high-priority data stream for OFDM wireless communications. The main improvement with respect to conventional hierarchical modulations is that the lowpriority data stream can be decoded from the received subcarrier symbols without any previous equalization in case of multipath fading channel. As a consequence, the expected performance is independent of the channel estimation method used to equalize the channel. Thedoi:10.1109/icc.2011.5962763 dblp:conf/icc/ScagliolaPG11 fatcat:2uf2gthm6rgm7cyby6agyktlxi