articleIEEE AccessJan 1, 2019GOLD OA

Cell-Free Massive MIMO: A New Next-Generation Paradigm

JZJiayi ZhangSCShuaiFei ChenYLYan LinJZJiakang ZhengBABo Ai

Beijing Jiaotong University · Nanjing University of Science and Technology · +1 more institution

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Abstract

Cell-free (CF) massive multiple-input-multiple-output (MIMO) systems have a large number of individually controllable antennas distributed over a wide area for simultaneously serving a small number of user equipments (UEs). This solution has been considered as a promising next-generation technology due to its ability to offer a similar quality of service to all UEs despite its low-complexity signal processing. In this paper, we provide a comprehensive survey of CF massive MIMO systems. To be more specific, the benefit of the so-called channel hardening and the favorable propagation conditions are exploited. Furthermore, we quantify the advantages of CF massive MIMO systems in terms of their energy- and…

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Topics & keywords

Topics
Keywords
  • MIMO
  • Computer science
  • Precoding
  • 3G MIMO
  • Efficient energy use
  • Software deployment
  • Quality of service
  • Computer network
UN Sustainable Development Goals
  • Affordable and clean energy
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