An Energy Efficient Power Control Scheme Based on Game Theory for OFDMA Femtocell Networks

Femtocell is one of the promising solutions that can improve the energy efficiency of cellular network. However, densely and randomly deployed femtocells may experience server inter-femtocell interference due to rough-and-tumble spectrum reuse with unconstrained power. In this paper, the downlink power control problem is investigated to achieve an energy efficient power allocation scheme. The problem is formulated as a non-cooperative game and distributed power control algorithm is proposed. Numerical results suggest that a good energy efficiency improvement is acquired and the algorithm converge within a few iteration times.