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Fundamental Asymptotic Behavior of (Two-User) Distributed Massive MIMO
Univ Pisa, Italy.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.
Nokia Bell Labs, France.
2018 (English)In: 2018 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM), IEEE , 2018Conference paper, Published paper (Refereed)
Abstract [en]

This paper considers the uplink of a distributed Massive MIMO network where N base stations (BSs), each equipped with M antennas, receive data from K = 2 users. We study the asymptotic spectral efficiency (as M -amp;gt; infinity) with spatial correlated channels, pilot contamination, and different degrees of channel state information (CSI) and statistical knowledge at the BSs. By considering a two-user setup, we can simply derive fundamental asymptotic behaviors and provide novel insights into the structure of the optimal combining schemes. In line with In when global CSI is available at all BSs, the optimal minimum-mean squared error combining has an unbounded capacity as M -amp;gt; infinity, if the global channel covariance matrices of the users are asymptotically linearly independent. This result is instrumental to derive a suboptimal combining scheme that provides unbounded capacity as M -amp;gt; infinity using only local CSI and global channel statistics. The latter scheme is shown to outperform a generalized matched filter scheme, which also achieves asymptotic unbounded capacity by using only local CSI and global channel statistics, but is derived following [2] on the basis of a more conservative capacity bound.

Place, publisher, year, edition, pages
IEEE , 2018.
Series
IEEE Global Communications Conference, ISSN 2334-0983
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-158396DOI: 10.1109/GLOCOM.2018.8647938ISI: 000465774304153ISBN: 978-1-5386-4727-1 (electronic)OAI: oai:DiVA.org:liu-158396DiVA, id: diva2:1332812
Conference
IEEE Global Communications Conference (GLOBECOM)
Available from: 2019-06-28 Created: 2019-06-28 Last updated: 2019-06-28

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • 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