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On the Energy Efficiency of Millimeter Wave Massive MIMO Based on Hybrid Architecture

School of Telecommunication Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
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Energies 2019, 12(11), 2227; https://doi.org/10.3390/en12112227
Received: 1 May 2019 / Revised: 22 May 2019 / Accepted: 6 June 2019 / Published: 11 June 2019
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Abstract

Millimeter Wave (mmWave) Massive Multiple Input Multiple Output (MIMO) has been a promising candidate for the current and next generation of cellular networks. The hybrid analogue/digital precoding will be a crucial ingredient in the mmWave cellular systems to reduce the number of Radio Frequency (RF) chains along with the corresponding energy and power consumption of the systems. In this paper, we aim to improve the energy efficiency of mmWave Massive MIMO by using a combination of high dimension analogue precoder and low dimension digital precoder. The spectral efficiency and the corresponding transmitted and consumed power of the mmWave Massive MIMO is formulated by taking all the consumed power from the transmitting side to receiving end into account. We propose the Power Controlled Energy Maximization (PCEM) algorithm in this paper, and the proposed algorithm works by controlling the transmission power to balance the improved radiated energy efficiency and the increased power consumption for a given number of transceiver chains. The simulation and analytical results show that the proposed algorithm performs better than the reference algorithms by maximizing the overall energy efficiency of the system without much complexity. View Full-Text
Keywords: millimeter wave; hybrid architecture; massive MIMO; energy efficient; power consumption millimeter wave; hybrid architecture; massive MIMO; energy efficient; power consumption
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Uthansakul, P.; Ahmad Khan, A. On the Energy Efficiency of Millimeter Wave Massive MIMO Based on Hybrid Architecture. Energies 2019, 12, 2227.

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