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This paper studies the design of a linear precoder and receiver for the downlink of multi-user multiple-input multiple-output (MIMO) systems with imperfect channel state information (CSI). First, we modify the regularized block diagonalization scheme for the case of imperfect CSI, where we assume the variance of the channel estimation error is known. Next, we propose a novel joint design for the optimized...
This paper studies the optimization of a dual-hop multi-input single-output (MISO) link with a full-duplex multi-input multi-output (MIMO) relay connecting the end nodes based on the amplify-and-forward or decode-and-forward protocol. The direct end-to-end link is considered weak, hence interpreted as interference by the dual-hop relay link. We observe a duality between the first and second hops in...
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