SINR Balanced Power Allocation and Antenna Selection in uplink Multiuser Massive MIMO Systems

In this paper, a distributed pilot-based power control algorithm is proposed that controls the transmitted power of each user in the uplink direction base on pilot’s measurement in the downlink direction to address the SINR balancing and antennas selection in a multi-user massive MIMO system. In the proposed algorithm, each user chooses a set of antennas of all BSs as their home group antennas and based on their received pilot power, adjust their transmitting power by solving a polynomial equation. The algorithm is performed recursively and after several repetitions, the SINR values of all users converge to the same value in their home group antennas. The simulation results illustrate the improvement in energy efficiency by choosing proper antennas selection and power adjustment.