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Improving Energy Efficiency Fairness of Wireless Networks: A Deep Learning Approach

Author

Listed:
  • Hoon Lee

    (Department of Information and Communications Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Korea)

  • Han Seung Jang

    (School of Electrical, Electronic Communication, and Computer Engineering, Chonnam National University, 50, Daehak-ro, Yeosu 59626, Korea)

  • Bang Chul Jung

    (Department of Electrical Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea)

Abstract

Achieving energy efficiency (EE) fairness among heterogeneous mobile devices will become a crucial issue in future wireless networks. This paper investigates a deep learning (DL) approach for improving EE fairness performance in interference channels (IFCs) where multiple transmitters simultaneously convey data to their corresponding receivers. To improve the EE fairness, we aim to maximize the minimum EE among multiple transmitter–receiver pairs by optimizing the transmit power levels. Due to fractional and max-min formulation, the problem is shown to be non-convex, and, thus, it is difficult to identify the optimal power control policy. Although the EE fairness maximization problem has been recently addressed by the successive convex approximation framework, it requires intensive computations for iterative optimizations and suffers from the sub-optimality incurred by the non-convexity. To tackle these issues, we propose a deep neural network (DNN) where the procedure of optimal solution calculation, which is unknown in general, is accurately approximated by well-designed DNNs. The target of the DNN is to yield an efficient power control solution for the EE fairness maximization problem by accepting the channel state information as an input feature. An unsupervised training algorithm is presented where the DNN learns an effective mapping from the channel to the EE maximizing power control strategy by itself. Numerical results demonstrate that the proposed DNN-based power control method performs better than a conventional optimization approach with much-reduced execution time. This work opens a new possibility of using DL as an alternative optimization tool for the EE maximizing design of the next-generation wireless networks.

Suggested Citation

  • Hoon Lee & Han Seung Jang & Bang Chul Jung, 2019. "Improving Energy Efficiency Fairness of Wireless Networks: A Deep Learning Approach," Energies, MDPI, vol. 12(22), pages 1-18, November.
  • Handle: RePEc:gam:jeners:v:12:y:2019:i:22:p:4300-:d:285892
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    References listed on IDEAS

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    1. Yann LeCun & Yoshua Bengio & Geoffrey Hinton, 2015. "Deep learning," Nature, Nature, vol. 521(7553), pages 436-444, May.
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