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Frequency-domain equalization for OFDMA-based multiuser MIMO systems with improper modulation schemesKeywords: OFDMA , multiple-input multiple-output (MIMO) , frequency-domain equalization Abstract: In this paper, we propose a novel transceiver structure for orthogonal frequency division multiple access-based uplink multiuser multiple-input multiple-output systems. The numerical results show that the proposed frequency-domain equalization schemes significantly outperform conventional linear minimum mean square error-based equalizers in terms of bit error rate performance with moderate increase in computational complexity.
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