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Sustainable green networking: exploiting degrees of freedom towards energy-efficient 5G systems

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Abstract

The carbon footprint concern in the development and deployment of 5G new radio systems has drawn the attention to several stakeholders. In this article, we analyze the critical power consuming component of all candidate 5G system architectures—the power amplifier (PA)—and propose PA-centric resource management solutions for green 5G communications. We discuss the impact of ongoing trends in cellular communications on sustainable green networking and analyze two communications architectures that allow exploiting the extra degrees-of-freedom from multi-antenna and massive antenna deployments: small cells/distributed antenna network and massive MIMO. For small cell systems with a moderate number of antennas, we propose a peak to average power ratio-aware resource allocation scheme for joint orthogonal frequency and space division multiple access. For massive MIMO systems, we develop a highly parallel recurrent neural network for energy-efficient precoding. Simulation results for representative 5G deployment scenarios demonstrate an energy efficiency improvement of one order of magnitude or higher with respect to current state-of-the-art solutions.

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Authors and Affiliations

  1. Bradley Department of Electrical and Computer Engineering, Wireless@Virginia Tech, Blacksburg, VA, USA

    Miao Yao, Munawwar M. Sohul, Xiaofu Ma, Vuk Marojevic & Jeffrey H. Reed

Authors
  1. Miao Yao
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  2. Munawwar M. Sohul
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  3. Xiaofu Ma
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  4. Vuk Marojevic
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  5. Jeffrey H. Reed
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Corresponding author

Correspondence to Jeffrey H. Reed.

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Yao, M., Sohul, M.M., Ma, X. et al. Sustainable green networking: exploiting degrees of freedom towards energy-efficient 5G systems. Wireless Netw 25, 951–960 (2019). https://doi.org/10.1007/s11276-017-1626-7

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  • DOI: https://doi.org/10.1007/s11276-017-1626-7

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