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The demands for wireless network bandwidth are rapidly increasing with the expanding number of mobile users as well as the diversification in types of services. Although fast-developing communication techniques continue to enlarge the network capacity, the growth rate of the huge amount of users' demands still outstrip the gains. Learning from the information cognition process of human brains, we...
This paper investigates QoS-aware relay selection and subcarrier assignment in cooperative OFDMA networks. In contrast to some existing works, which solve the sum-rate maximization problem directly, we first simplify it by exploiting the structure of the optimal solution, then we solve the simplified problem. To characterize the optimal network sum-rate performance, we solve the simplified problem...
This article advocates a novel network architecture and associated location-based reconfiguration algorithm for the future wireless communications network. In contrast to the dominating cellular architecture, the new form envisions a logical overlapped framework with traditional cellular communication, centrally controlled short-range communication and "Store-Carry-Forward" short-range communication...
Based on the primary physical infrastructure of traditional cellular mobile communication network, this paper provides an overlapped variable logical structure with conventional communication, point to point direct communication and point to multi-point direct communication modes according to the type of services. In particular, a signaling-based reconfiguration technique is proposed to adaptively...
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