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Large multiple-input multiple-output (MIMO) networks promise high energy efficiency, i.e., much less power is required to achieve the same capacity compared to the conventional MIMO networks if perfect channel state information (CSI) is available at the transmitter. However, in such networks, huge overhead is required to obtain full CSI especially for Frequency-Division Duplex (FDD) systems. To reduce...
Large multiple-input multiple-output (MIMO) network promises high energy efficiency using a large number of antennas. To reduce the signaling overhead of obtaining the full channel state information, we propose a downlink antenna selection scheme for large distributed MIMO networks with regularized zero-forcing (RZF) precoding. We study the joint optimization of antenna selection, regularization factor,...
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