Optimal QoS aware resource allocation for cooperative networks

In this paper, we investigate resource allocation in the OFDMA cooperative networks with Best effort (BE) services and Real time (RT) services. Both Amplify-and-forward (AF) and Decode-and-forward (DF) schemes are considered adaptively in the two-hop relay transmission. We resolve the relay node, relay strategy selection combined subcarrier and power allocation in mixed services resource allocation problem by first satisfying the QoS requirements of RT services with the least power assumption and then maximizing the overall throughput of BE services. Simulation results reveal that our proposed resource allocation method outperforms previous works for mixed services in terms of QoS satisfaction and maintains a relatively high system throughput.