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Challenges of 5G Green Communication Networks

  • Xiaohu Ge
  • Wuxiong Zhang
Chapter

Abstract

The deployment of a large number of small cells poses new challenges to energy efficiency, which has often been ignored in fifth generation (5G) cellular networks. While massive multiple-input multiple outputs (MIMO) will reduce the transmission power at the expense of higher computational cost, the question remains as to which computation or transmission power is more important in the energy efficiency of 5G small cell networks. Thus, the main objective in this chapter is to investigate the computation power based on the Landauer principle. Simulation results reveal that more than 50% of the energy is consumed by the computation power at 5G small cell base stations (BSs). Moreover, the computation power of 5G small cell BS can approach 800 W when the massive MIMO (e.g., 128 antennas) is deployed to transmit high volume traffic. This clearly indicates that computation power optimization can play a major role in the energy efficiency of small cell networks.

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Copyright information

© Publishing House of Electronics Industry, Beijing and Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Xiaohu Ge
    • 1
  • Wuxiong Zhang
    • 2
  1. 1.School of Electronic Information and CommunicationsHuazhong University of Science and TechnologyWuhanChina
  2. 2.Shanghai Research Center for Wireless CommunicationsShanghaiChina

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