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- W2085271812 abstract "Large-scale multi-cell multiuser multiple-input multiple-output (LS-MIMO) systems can greatly increase the spectral efficiency. But the performance of these systems is deteriorated by pilot contamination. In this paper, first, a pilot design criterion is proposed by exploiting the orthogonality of channel vectors of LS-MIMO systems. Second, following this criterion, Chu sequences based pilots are designed. Because of the proposed pilots, the channel estimate of most terminals of a cell is only interfered by the partial cells rather than all the other cells, where the latter is caused by traditional pilots. As a result, pilot contamination is mitigated. Numerical results verify the effectiveness of the proposed pilots." @default.
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- W2085271812 date "2013-06-01" @default.
- W2085271812 modified "2023-10-16" @default.
- W2085271812 title "Pilot design for large-scale multi-cell multiuser MIMO systems" @default.
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- W2085271812 doi "https://doi.org/10.1109/icc.2013.6655444" @default.
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