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In this paper, we investigate how to design precoders to achieve full diversity and low decoding complexity for MIMO systems. First, we assume that we have 2 transmitters each with multiple antennas and 2 receivers each with multiple antennas. Each transmitter sends codewords to respective receiver at the same time. It is difficult to handle this problem because of interference. Therefore, we propose an orthogonal transmission scheme that combines space-time codes and array processing to achieve lowcomplexity decoding and full diversity for transmitted signals. Simulation results validate our theoretical analysis.

MIMO Interference Management Using Precoding Design