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Title: On strategies of multi-user MIMO transmit signal processing
Authors: Choi, Lai-U
Ivrlač, Michel T.
Murch, Ross David
Utschick, Wolfgang
Keywords: MIMO systems
Signal processing
Time Division Multiple Access (TDMA)
Issue Date: Nov-2004
Citation: IEEE transactions on wireless communications, v. 3, no. 6, Nov. 2004, p. 1936-1941
Abstract: In this letter, we introduce five different strategies of linear transmit signal processing for multiuser multiple-input multiple-output (MIMO) systems and provide performance comparisons in terms of maximum throughput in both uncorrelated and correlated channels when the number of transmit antennas is much larger than the number of receive antennas. It is shown that the multiuser MIMO schemes are preferable to time-division multiple-access (TDMA)-based MIMO schemes, hence demonstrating the power of multiuser MIMO signal processing. Our work also indicates possibilities for future research in finding efficient suboptimal algorithms. As an example, we show that our multiuser MIMO decomposition scheme can improve the maximum throughput compared to TDMA-based MIMO schemes for large number of transmit antennas or high transmit power.
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