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The problem of optimal likelihood based modulation classification (MC) for optimal detection in 2×2 multiuser MIMO (MU-MIMO) receivers is considered. The optimal Log-MAP classifier is computationally exhaustive, and its sub-optimal Max-Log-MAP version poses remarkable degradation in performance. Between these two extremes, we propose four computationally efficient methods for MC, by taking special...
This paper considers precoding schemes in physical network coded two-way MIMO relay channels. We propose a lattice reduction aided Tomlinson-Harashima Precoding(THP) scheme at first, and compare it with the existing amplify-and-forward (AF) scheme zero-forcing (ZF) schemes traditional decode-and-forward (DF) scheme and network coding (NC) scheme. Simulations show that the proposed scheme outperforms...
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