As a low complexity signal detection scheme for overloaded multiple-input multiple-output (MIMO) systems, Slab-LR (Lattice Reduction)-MMSE (Minimum Mean Square Error)- SIC (Successive Interference Cancellation) has been proposed. In this paper, we propose new selection criteria of some parameters in Slab-LR-MM-SE-SIC. In addition, we derive an upper bound of the error probability of Slab-LR-MMSE-SIC and show that it can achieve the same diversity order as the optimal maximum likelihood (ML) detection.
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