  In this paper, we study Simultaneous Communication of Data and Control (SCDC)
information signals in Full Duplex (FD) Multiple-Input Multiple-Output (MIMO)
wireless systems. In particular, considering an FD MIMO base station serving
multiple single-antenna FD users, a novel multi-user communication scheme for
simultaneous DownLink (DL) beamformed data transmission and UpLink (UL)
pilot-assisted channel estimation is presented. Capitalizing on a recent FD
MIMO hardware architecture with reduced complexity self-interference analog
cancellation, we jointly design the base station's transmit and receive
beamforming matrices as well as the settings for the multiple analog taps and
the digital SI canceller with the objective to maximize the DL sum rate. Our
simulation results showcase that the proposed approach outperforms its
conventional half duplex counterpart with 50% reduction in hardware complexity
compared to the latest FD-based SCDC schemes.
