Energy-Efficient Resource Allocation in NOMA-based HCN Systems | ||
| The Modares Journal of Electrical Engineering | ||
| Article 6, Volume 15, Issue 3, 2015, Pages 35-41 PDF (315.49 K) | ||
| Authors | ||
| Mohammad Moltafet1; Mohammad Moltafet1; Paeiz Azmi* 2 | ||
| 1M.Sc. student, Department of Electrical and Computer Engineering, Tarbiat Modares University, Tehran Iran | ||
| 2Full Professor Department of Electrical and computer Engineering, Tarbiat Modares University, Tehran , Iran Tehran | ||
| Abstract | ||
| In this paper, the energy efficient resource allocation in NOMA-based heterogeneous cellular network (HCN) systems is investigated. Since energy consumption and its limitations is one of the important challenges in fifth generation of cellular networks (5G), we propose a resource allocation problem which allocates power and subcarriers to multiple users to achieve the best system energy efficiency (EE). To solve the corresponding problem an iterative algorithm is used. In each iteration power and subcarrier are assigned separately. In each iteration, to solve the power allocation problem dual method considering successive convex approximation (SCA) approach is used, and to solve the subcarrier allocation problem, mixed integer non-linear programing (MINLP) of optimization toolboxes is applied. The effectiveness of this resource allocation method is illustrated in simulation results section. | ||
| Keywords | ||
| NOMA; Energy efficiency; resource allocation; HCN | ||
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