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 . Both weighted sum-rate and max-min rate are consideredas the optimization objective , and transmission power constraints are imposed on both individual transmitters and the aggregate over all transmitters.
After 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 . Common relaying strategies are considered , and transmission power constraints are imposed on both individual transmitters and the aggregate over all transmitters.