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Spectral and Energy Efficiency of Cell-Free Massive MIMO Systems with Hardware Impairments
Beijing Jiaotong Univ, Peoples R China.
Beijing Jiaotong Univ, Peoples R China.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.
Southeast Univ, Peoples R China.
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2017 (English)In: 2017 9TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS AND SIGNAL PROCESSING (WCSP), IEEE , 2017Conference paper, Published paper (Refereed)
Abstract [en]

Cell-free massive multiple-input multiple-output (MIMO), with a large number of distributed access points (APs) that jointly serve the user equipments (UEs), is a promising network architecture for future wireless communications. To reduce the cost and power consumption of such systems, it is important to utilize low-quality transceiver hardware at the APs. However, the impact of hardware impairments on cell-free massive MIMO has thus far not been studied. In this paper, we take a first look at this important topic by utilizing well-established models of hardware distortion and deriving new closed-form expressions for the spectral and energy efficiency. These expressions provide important insights into the practical impact of hardware impairments and also how to efficiently deploy cell-free systems. Furthermore, a novel hardware-quality scaling law is presented. It proves that the impact of hardware impairments at the APs vanish as the number of APs grows. Numerical results validate that cell-free massive MIMO systems are inherently resilient to hardware impairments.

Place, publisher, year, edition, pages
IEEE , 2017.
Series
International Conference on Wireless Communications and Signal Processing, ISSN 2325-3746
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-147212DOI: 10.1109/WCSP.2017.8171057ISI: 000426972200182ISBN: 978-1-5386-2062-5 OAI: oai:DiVA.org:liu-147212DiVA, id: diva2:1197318
Conference
9th International Conference on Wireless Communications and Signal Processing (WCSP)
Note

Funding Agencies|Fundamental Research Funds for the Central Universities [2016RC013, 2017JBM319, 2016JBZ003]; SSF; National Natural Science Foundation of China [61601020, 61531011]; National Science Foundation (NSFC) for Distinguished Young Scholars of China [61625106]; ELLIIT

Available from: 2018-04-12 Created: 2018-04-12 Last updated: 2018-04-12

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf