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The number of cluster heads (CH) has significant effects on the way in which the network performs, the connectivity it achieves, and the constricting cost. Hence, the selection of a suitable number of cluster head nodes represents a form of an optimization problem. The cross-layer optimization technique is considered in this paper, to select the best number of CH nodes. Cross-layer optimization studies...
"Anywhere" and "anytime" are the ultimate properties of wireless communications. To achieve these goals, frequency reuse is one of the most important concepts that has to be considered in high user density networks providing various broadband services. This paper proposes an efficient resource allocation algorithm called Group Based Graph Coloring (GBGC) that exploits unused spectrum...
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