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We investigate the linear precoding designs for multiuser two-way relay system (MU-TWRS) where a multi-antenna base-station (BS) communicates with multiple single-antenna mobile stations (MSs) via a multi-antenna relay station (RS). The amplify- and-forward (AF) relay protocol is employed. The design goal is to optimize the precodings at BS, RS or both so as to minimize the total mean-square error...
In most of the existing works on cognitive radio (CR) systems, the spectrum sensing and the cross-layer scheduling are designed separately, where the cross-layer scheduling is performed based on the hard sensing information (HSI) generated from the sensing modular. In this paper, we shall propose a joint cross-layer and sensing design and study its performance advantages over the aforementioned traditional...
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