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System-centric modeling and analysis are of key significance in planning andoptimizing cellular networks. In this paper, we provide a mathematical analysisof performance modeling for LTE networks. The system model characterizes thecoupling relation between the cell load factors, taking into accountnon-uniform traffic demand and interference between the cells with arbitrarynetwork topology. Solving the model enables a network-wide performanceevaluation in resource consumption. We develop and prove both sufficient andnecessary conditions for the feasibility of the load-coupling system, andprovide results related to computational aspects for numerically approachingthe solution. The theoretical findings are accompanied with experimentalresults to instructively illustrate the application in optimizing LTE networkconfiguration.

Analysis of Cell Load Coupling for LTE Network Planning and Optimization