Apparatuses, methods and computer programs for estimating a multi-hop radio channel between a transmitter, one or more relay stations, and a receiver in a mobile communication system. The apparatus includes one or more interfaces to obtain information related to a position and a state of movement of the transmitter and receiver, information related to an environment of the transmitter, the receiver, and the one or more relay stations, information related to channel state feedback of single-hop radio channels between the transmitter, the receiver, and the one or more relay stations, and information related to delays of the channel state feedback. The apparatus also includes a control module to control the one or more.