An MMSE-DBF Interference Suppression Reception Scheme for MIMO-OSTBCs System

In this paper, an interference suppression reception scheme for multiple input multiple output (MIMO) system using orthogonal space-time block codes (OSTBCs) in strong interference scenario is presented. Based on digital beamforming (DBF), the scheme is valid to suppress strong interferences without performing channel estimation. The SER performance of the proposed scheme is close to that of maximum likelihood decoding (MLD) scheme although with a little SER performance loss. But the proposed scheme has much lower complexity. It is more practical in applications. Simulation results are given to verify the interference suppression ability and advantages of the proposed scheme.