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Pilot Contamination is Not a Fundamental Asymptotic Limitation in Massive MIMO
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering. Nokia Bell Labs, France.ORCID iD: 0000-0002-5954-434X
Nokia Bell Labs, Nozay, France.
Univ Pisa, Italy; Univ Paris Saclay, France.
2017 (English)In: 2017 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC), IEEE , 2017Conference paper, Published paper (Refereed)
Abstract [en]

Massive MIMO (multiple-input multiple-output) provides great improvements in spectral efficiency over legacy cellular networks, by coherent combining of the signals over a large antenna array and by spatial multiplexing of many users. Since its inception, the coherent interference caused by pilot contamination has been believed to be an impairment that does not vanish, even with an unlimited number of antennas. In this work, we show that this belief is incorrect and an artifact from using simplistic channel models and suboptimal signal processing schemes. We focus on the uplink and prove that with multicell MMSE combining, the spectral efficiency grows without bound as the number of antennas increases, even under pilot contamination, under a condition of linear independence between the channel covariance matrices. This condition is generally satisfied, except in special cases that are hardly found in practice.

Place, publisher, year, edition, pages
IEEE , 2017.
Series
IEEE International Conference on Communications, ISSN 1550-3607
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:liu:diva-145831DOI: 10.1109/ICC.2017.7996674ISI: 000424872102034ISBN: 978-1-4673-8999-0 (print)OAI: oai:DiVA.org:liu-145831DiVA, id: diva2:1192096
Conference
IEEE International Conference on Communications (ICC)
Note

Funding Agencies|ELLIIT; EU FP7 [ICT-619086]; ERC Starting Grant [305123 MORE]

Available from: 2018-03-21 Created: 2018-03-21 Last updated: 2019-06-28

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CiteExportLink to record
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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