Chained user cooperation scheme employing joint network-channel coding

This paper proposes a joint network-channel codingbased on turbo codes for user cooperation. The scenario under consideration is one in which two "partners"-UE1 and UE2-cooperate in transmitting information to the base station (BS). Each partner transmits both locally generated information and the relayed information that originated at the other partner. The local information and relayed information are jointly network-channel coded to form a superimposed codeword, and the adjacent codewords transmitted in turn by the two partners are tightly correlative like a chain. It is shown via simulation that the proposed scheme achieves full diversity gain compared with the other user cooperation schemes, including those based on coded cooperation and distributed space-time coded cooperation.