Pilot Power Control and Assignment Games in MU-MIMO Systems
Abstract: In this work, we consider a MU-MIMO communication system forboth single cell and multi-cell cases. Other than the fundamental Rayleighchannel model which has been analysed intensively in previous works,we also adopt the Rician channel to model different types of wirelesslinks. Then we study the impact of data and pilot power on the systemperformance in a single cell for both channel models. The simulationresults show that the characteristics of these two channel models aresimilar. Therefore, we modify an existing power allocation algorithmand implement it. The characteristics of a small scale multi-cell systemare also investigated. In addition, based on the derived channel estimationerror formulations, a pilot sequence assignment game is proposed.The simulation results show that the algorithm can mitigatethe pilot contamination and has a fast converge speed.
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