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In this paper, we consider a cellular two-way relay channel (cTWRC) where multiple mobile stations (MSs) exchange information with a base station (BS) via a relay station (RS). Both the BS and the RS are equipped with a very large-scale antenna array, whereas each MS is equipped with a small number of antennas. We investigate two zero-forcing (ZF)-based nonregenerative relaying schemes for cTWRCs,...
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