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Published in:   Vol. 6 Issue 1 Date of Publication:   May 2017

A Study on Dense Cellular Networks using Graph Coloring

S. Vijayashanthi

Page(s):   33-36 ISSN:   2278-2397
DOI:   10.20894/IJCOA.101.006.001.008 Publisher:   Integrated Intelligent Research (IIR)

“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 areas. To achieve this, GBGC groups the users into blocks with each having a leader (Group Head) that connects its cluster members to the base. The Group Head employs a graph coloring algorithm to tether other users to the base station, through the available unlicensed TVWS band. The simulation results indicate that the proposed algorithm achieves a good performance/complexity tradeoff that provides a promising alternative to the case of having only direct communication between the cellular users and the base station