Relay Assignment Schemes for Multiuser DF-AF Cooperative Wireless Networks

In this paper, a multiuser DF-AF cooperative wireless network is considered. When a user is assigned to another user by a base station, the user relays the received signal from another user by using either the DF or the AF protocol. We consider two types of feedbacks: full feedback and limited feedback. For full feedback cases, three relay assignment schemes are considered. The relay assignment scheme with limited feedback is also considered to reduce the signaling overhead caused by full feedback. The simulation results show that in full feedback case, the worst user outage probability of the min-max assignment scheme is much lower than that of the greedy assignment scheme.