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In this paper an original detection strategy for satellite digital broadcasting communications is defined; particularly, we consider a system derived from the DVB-S2 standard, which has been proposed as a development of the DVB-S system and exploits an iterative decoding and higher order modulations. The proposed approach relies on the use of the information which can be obtained by proper soft demapping schemes and on the use of the turbo codes instead of the LDPC (low density parity check) codes required by the standard. Moreover, an original receiver which is based on iterative demapping and decoding, is introduced. The adoption of this strategy can permit a remarkable performance gain and an improvement of the system throughput.