Joint transmit beamforming optimization and uplink/downlink user selection in a full-duplex multi-user MIMO system

摘要

This paper considers practical deployment issues of a multi-user MIMO system with full-duplex (FD) base station and half-duplex (HD) user equipment. The aim is to select a set of uplink (UL) and downlink (DL) users at any instant that will provide a satisfactory performance in system resource allocation. Furthermore, it is also necessary to deal with the interference created by the UL users to the DL users, which limits communication quality. In this work, we consider implementing a joint processing beamforming algorithm that can provide effective UL/DL selection and achieve system utility maximization. Our results show that with 20 dB self-interference cancellation, FD system significantly outperforms HD system under proportional fairness utility.