Fairness based antenna scheduling for multiuser MIMO systems

Abstract

We are concerned with the scheduling of base station (BS) transmitter antennas to mobile users in a communication downlink. We define a scheduling-priority criterion based on which the BS schedules transmissions to users. Two transmission schemes are considered. One in which, in a given time slot, the BS schedules all the transmit antennas to a single user determined to have greatest priority. Secondly, the BS transmit antennas are scheduled independently to the highest priority users as determined by each antenna scheduler individually. Finally, we evaluate the system capacity achieved under the two schemes with zero-forcing equalizers employed at the user receiver.