Optimal femtocell density for maximizing throughput in 5G heterogeneous networks under outage constraints

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Authors Talha Mahin Mir, Linglong Dai, Yang Yang, Wenqian Shen, Bichai Wang
Journal/Conference Name IEEE 86th Vehicular Technology Conference (VTC…
Paper Category
Paper Abstract Heterogeneous networks (HetNets), which involve densely deployed femtocells underlaid traditional macrocell network, is a promising solution to the extremely high data rate requirements of the future 5G communications. In this paper, we analyze the closed-form optimal deployment of femtocells in HetNets to maximize the network throughput under the outage constraints from both macrocells and femtocells. Specifically, we model the random distribution of macro cell users (MUEs) and femtocell base stations (FBSs) as Poisson Point Processes (PPPs). Then, the closed form expressions for outage probabilities in both uplink and downlink transmissions are derived. Further, we study the network throughput maximization problem under the outage probability constraints. Finally, With the help of convex optimization, the interval of FBS density, which contains the maximum network throughput is obtained in closed form. Simulation results validate the impact of the system parameters on the different optimal FBS density as well as the influence of interference to the maximum network throughput.
Date of publication 2017
Code Programming Language MATLAB

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