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In this work, the Multiple transmit antennas Multiple Access Channel isconsidered. A construction of a family of distributed space-time codes for thischannel is proposed. No Channel Side Information at the transmitters is assumedand users are not allowed to cooperate together. It is shown that the proposedcode achieves the Diversity Multiplexing Tradeoff of the channel. As anexample, we consider the two-user MIMO-MAC channel. Simulation results show thesignificant gain offered by the new coding scheme compared to an orthogonaltransmission scheme, e.g. time sharing.

Distributed Space-Time Block Codes for the MIMO Multiple Access Channel