Power Allocation for the Uplink of Multi-User MIMO-OFDMA Systems

In this paper, power allocation scheme for clusters by mobile station (MS) is investigated in the uplink of a multi-user multiple-input multiple-output (MU-MIMO) and orthogonal frequency division multiplexing access (OFDMA) cellular system. In system level simulation works, without the knowledge of how many clusters will be assigned to a MS, it is a puzzle to decide how much transmission power should be used to calculate the signal to noise ratio (SNR) value before scheduled by the scheduler in base station (BS). Four feasible schemes are proposed for this problem. System level simulation results show that one of these schemes can improve system throughput while keeping the inter-cell interference at a moderate level.