Optimal cooperative relay selection strategy based on decode-and-forward
LI Qiao-fu · Information technology newsletter · 2010
Cooperative diversity technique proposed in recent years can form the virtual multiple antenna array and enlarge the network capacity enormously by sharing the different users' antennas in a signal antenna network,which has been investigated widely by researchers.A reactive optimal cooperative relay selection criteria was proposed based on the DaF(decode and forward) strategy by deriving the SER(symbol error rate) of the cooperative transmission system.It is shown that opportunistic DaF relaying is outage-optimal under an aggregate power constraint,that is,it is equivalent in outage behavior to the optimal DaF strategy that employs all potential relays.