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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 servingmultiple single-antenna FD users, a novel multi-user communication scheme forsimultaneous DownLink (DL) beamformed data transmission and UpLink (UL)pilot-assisted channel estimation is presented. Capitalizing on a recent FDMIMO hardware architecture with reduced complexity self-interference analogcancellation, we jointly design the base station's transmit and receivebeamforming matrices as well as the settings for the multiple analog taps andthe digital SI canceller with the objective to maximize the DL sum rate. Oursimulation results showcase that the proposed approach outperforms itsconventional half duplex counterpart with 50% reduction in hardware complexitycompared to the latest FD-based SCDC schemes.

Simultaneous Data Communication and Channel Estimation in Multi-User Full Duplex MIMO Systems