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Exploiting direct transmissions between geographically close mobile users without passing through the base stations, device-to-device (D2D) communications contribute significant improvement to the spectral efficiency of cellular networks. In D2D-assisted cellular networks, the social interaction of mobile users is an important property that will affect the practical performance and should be seriously...
In multiuser cellular uplinks, cooperating mobiles may share their antennas in order to achieve transmit diversity by forming a virtual antenna array (VAA) in a distributed fashion. In this paper, based on the minimum BER criterion, we investigate cooperating-user-selection (CUS) and adaptive-power-allocation (APA) for two types of differentially modulated cooperative cellular uplinks requiring no...
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