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In this paper, the authors develop a distributed adaptive energy-efficient radio resource allocation based on game theory in Orthogonal Frequency Division Multiplexing (OFDM) cellular systems. It is demonstrated that game theory can be used as an effective tool to study resource allocation in wireless networks with Quality-of-Service (QoS) constraints. Since power is one of the important schedulable resources that they intend to manage it in OFDM cellular network, they consider power as a resource. They solve resource allocation problem based on the idea of the Nash Equilibrium (NE) from non-cooperative game theory. They formulate a new scheme of utility function which forms adaptive power allocation.
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