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Enhancing the Energy Efficiency of mmWave Massive MIMO by Modifying the RF Circuit Configuration

Author

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  • Peerapong Uthansakul

    (School of Telecommunication Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand)

  • Arfat Ahmad Khan

    (School of Telecommunication Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand)

Abstract

Hybrid architectures are used in the Millimeter wave (mmWave) Massive MIMO systems, which use a smaller number of RF chains and reduces the power and energy consumption of the mmWave Massive MIMO systems. However, the majority of the hybrid architectures employs the conventional circuit configuration by connecting each of the RF chains with all the transmitting antennas at the base station. As a result, the conventional circuit configuration requires a large number of phase shifters, combiners, and low-end amplifiers. In this paper, we modify the RF circuit configuration by connecting each of the RF chains with some of the transmitting antennas of mmWave Massive MIMO. Furthermore, the hybrid analogue/digital precoders and decoders along with the overall circuit power consumptions are modelled for the modified RF circuit configuration. In addition, we propose the alternating optimization algorithm to enhance the optimal energy efficiency and compute the optimal system parameters of the mmWave Massive MIMO system. The proposed framework provides deeper insights of the optimal system parameters in terms of throughput, consumed power and the corresponding energy efficiency. Finally, the simulation results validate the proposed framework, where it can be seen that the proposed algorithm significantly reduces the power and energy consumptions, with a little compromise on the system spectral gain.

Suggested Citation

  • Peerapong Uthansakul & Arfat Ahmad Khan, 2019. "Enhancing the Energy Efficiency of mmWave Massive MIMO by Modifying the RF Circuit Configuration," Energies, MDPI, vol. 12(22), pages 1-23, November.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:22:p:4356-:d:287292
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    References listed on IDEAS

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    1. Peerapong Uthansakul & Arfat Ahmad Khan, 2019. "On the Energy Efficiency of Millimeter Wave Massive MIMO Based on Hybrid Architecture," Energies, MDPI, vol. 12(11), pages 1-19, June.
    2. Arfat Ahmad Khan & Peerapong Uthansakul & Pumin Duangmanee & Monthippa Uthansakul, 2018. "Energy Efficient Design of Massive MIMO by Considering the Effects of Nonlinear Amplifiers," Energies, MDPI, vol. 11(5), pages 1-22, April.
    3. Peerapong Uthansakul & Arfat Ahmad Khan & Monthippa Uthansakul & Pumin Duangmanee, 2018. "Energy Efficient Design of Massive MIMO Based on Closely Spaced Antennas: Mutual Coupling Effect," Energies, MDPI, vol. 11(8), pages 1-25, August.
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