Before revision: We consider the problem of jointly optimizing channel pairing, channel-user assignment, and power allocation  in a single-relay cooperative system with multiple channels and multiple users , under several common relaying strategies .
After revision: We consider the problem of jointly optimizing channel pairing, channel-user assignment, and power allocation , to maximize the weighted sum-rate, in a single-relay cooperative system with multiple channels and multiple users , under several common relaying strategies .