Robust Power Allocation Based on Game Theory for Multi-User MIMO System with SLNR Precoding

This paper proposes an optimal non-cooperative power allocation game scheme for multi-user multiple-input multiple-output (MU-MIMO) with signal to leakage and noise ratio (SLNR) precoding. The proposed game scheme sets the value of per user SLNR and allocated power as reference for punishment price. Considering the effect of channel correlation and channel estimation error, an alternative robust power allocation scheme is presented based on the game model for per user in order to guarantee the desired QoS of the users and achieve Nash Equilibrium (NE). Simulation results show that both the schemes considerably improve the average bit error rate performance and obtain excellent sum capacity performance than other schemes in the presence of channel correlation and incomplete channel state information.