Khalili, RaminLasaulce, SamsonDuhamel, Pierre2010-05-192010-05-192010-05-192006https://infoscience.epfl.ch/handle/20.500.14299/50147In this paper we consider the orthogonal cooperative broadcast channel with a common message. The downlink and cooperation channels are modelled by erasure channels and assumed to be orthogonal. We derive an achievable rate for this channel by using a combination of decode-and-forward and estimate-and-forward and considering both symmetric and asymmetric cooperation. These schemes are based on a two-step cooperation. It is shown under which conditions the proposed achievable rate coincides with the considered upper bound that is in fact the interpretation of the traditional cut-set bound in the context of broadcast cooperative erasure channels. Moreover we propose a time-sharing-based iterative coding scheme with more than two cooperation steps.Broadcating channelsCooperating receiverstext::conference output::conference paper not in proceedings