A Robust Power Allocation Scheme for Relay Communication Networks Based on Seller–Buyer Game

A robust power allocation algorithm is proposed in this paper based on robust game theory. Considering that the channel gains are usually changing with the dynamic environment in practice, the uncertainty will cause the estimation errors of channel gains and deteriorate the quality of services of users. A probability threshold method is used to deal with the uncertainty of the channel gains. To jointly consider the maximum utilities of source node and relay node, a seller–buyer game is introduced and it is proved that the game converges to the unique equilibrium point. Besides, a distributed iteration algorithm is proposed to reduce the information overhead. Numerical results show the effectiveness and robustness of the proposed power algorithm.