ABC optimization aided Joint User and Throughput Maximization in underlay D2D communication

Abstract

Device to Device (D2D) communication represents a paradigm shift in the quest for realizing the twin objectives of maximization of system throughput and spectral efficiency for 5G networks. D2D communication allows devices in close proximity, to directly communicate, bypassing the base station, by reusing the licensed spectral resources of the cellular users. The resulting interference between D2D and cellular users has to be controlled by intelligent resource management strategies. In this paper, we have used Artificial Bee Colony (ABC) optimization to solve the joint user selection and throughput maximization optimization problem for D2D communication underlaying cellular network. The optimization herein, represents a mixed integer nonlinear programming problem (MINLP) nondeterministic polynomial (NP) hard problem, whose computational complexity increases exponentially with the number of users. ABC optimization, based on the foraging behavior of the bees, is used to provide a solution to the optimization problem. The ABC algorithm jointly optimizes user selection, mode selection and power allocation for D2D users, subject to interference, power and quality of service (QoS) constraints. The ABC aided solution is evaluated under multiple simulation scenarios. The results obtained prove the efficacy of the ABC aided approach as compared to results reported in literature.