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Broadcasting in Massive MIMO Using OSTBC with Reduced Dimension
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-7599-4367
2015 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Abstract—An analysis of broadcasting in massive MIMO (multiple-input and multiple-output) systems with a limited coherence interval is presented. When broadcasting common information, such as control signals, the base station does not have channel state information to the terminals. We propose that the base station broadcasts this common information using a low dimensional orthogonal space-time block code (OSTBC). This code is mapped onto the large antenna array with the use of a dimension reducing matrix, effectively “shrinking” the channel. The terminal can estimate the effective channel and decode the information, even when the coherence interval is short compared to the number of base station antennas. Different OSTBCs are compared in terms of outage capacity in practical scenarios using estimated CSI. In particular, the trade-off between diversity and rate, when little or no time/frequency diversity is available, is investigated.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2015. 386-390 p.
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-128275DOI: 10.1109/ISWCS.2015.7454369ISI: 000380480900078ISBN: 978-146736540-6 (print)OAI: oai:DiVA.org:liu-128275DiVA: diva2:930552
Conference
2015 International Symposium on Wireless Communication Systems (ISWCS). 25-28 Aug. 2015.Brussels
Available from: 2016-05-24 Created: 2016-05-24 Last updated: 2016-11-14

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Karlsson, MarcusBjörnson, EmilLarsson, Erik G.

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CiteExportLink to record
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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
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  • nn-NB
  • sv-SE
  • Other locale
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Output format
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