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Energy-spectral efficient resource allocation and power control in heterogeneous networks with D2D communication

Khazali, A ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1007/s11276-018-1811-3
  3. Publisher: Springer New York LLC , 2018
  4. Abstract:
  5. Heterogeneous networks (HetNets) provide the demand for high data rates. In this study, we analyze the coexistence of femtocells and device-to-device (D2D) communication with macrocells. Interference management and decreasing energy consumption are two important issues in HetNets. To this end, we propose an efficient fractional frequency reuse (FFR)-based spectrum partitioning scheme to reduce the cross-tier interference. We also propose to use different optimization problems for resource allocation in different tiers. For this purpose, an energy efficient optimization problem is applied to D2D user equipment. Further, an optimization problem based on the spectral efficiency, i.e., throughput, is considered for macrocell and femtocell tiers. These problems are modeled as a non-cooperative game that results in low computational complexity. Iterative algorithms with fast convergence are used to solve the optimization problems. It is shown that applying different optimizations on different tiers leads to better performance than considering the same optimization for all tiers. The results indicate that the proposed FFR structure and optimization problems improve system performance. We also analyze the tradeoff between energy efficiency and spectral efficiency of the introduced structure. © 2018, Springer Science+Business Media, LLC, part of Springer Nature
  6. Keywords:
  7. D2D communication ; Energy efficiency ; Femtocell ; Fractional frequency reuse ; Heterogeneous network ; Resource allocation ; Computational complexity ; Energy utilization ; Game theory ; Heterogeneous networks ; Iterative methods ; Mobile ad hoc networks ; Mobile telecommunication systems ; Power control ; Problem solving ; Structural optimization ; Cross-tier interferences ; D2D communications ; Deviceto-device (D2D) communication ; Efficient resource allocation ; Fractional frequency reuses (FFR) ; Heterogeneous network (HetNets) ; Low computational complexity
  8. Source: Wireless Networks ; 2018 ; 10220038 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s11276-018-1811-3