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In this paper, we evaluate the saturation throughput and saturation delay with direct/cooperative transmission strategies. Moreover, the cost function is introduced to tradeoff the system performance to determine the optimal strategy for adopting the cooperative transmission, and then we extend the model to support applications with quality of service (QoS) requirements. In order to improve the efficiency,...
This work considers the cooperative communication systems in Decode-and-Forward Mode. The scenario includes one source station, M relay stations and N destinations. In order to meet Quality of Service (QoS) guarantee, the individual capacity between the source station and the destination is considered under the worst case. However, for the whole system, the maximum throughput approaching is the major...
In communication networks, cognitive network (CN) is a new type of data network to solve some problems current networks are faced with. In this paper, we propose a Cognitive RBAC scheme which can be applied to Small Heterogeneous Networks (SHNs). Therefore, we present a Cognitive RBAC model by extending the well-known RBAC model. Our model increases the related definitions for the Cognitive RBAC model,...
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