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Multi-Pair Amplify-and-Forward Relaying with Very Large Antenna Arrays
Singapore University of Technology and Design.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, The Institute of Technology.
Blekinge Institute of Technology, Karlskrona, Sweden .
Singapore University of Technology and Design.
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2013 (English)In: Proceedings of the IEEE International Conference on Communicatons (ICC), IEEE , 2013, 4635-4640 p.Conference paper, Published paper (Refereed)
Abstract [en]

We consider a multi-pair relay channel where multiple sources simultaneously communicate with destinations using a relay. Each source or destination has only a single antenna, while the relay is equipped with a very large antenna array. We investigate the power efficiency of this system when maximum ratio combining/maximal ratio transmission (MRC/MRT) or zero-forcing (ZF) processing is used at the relay. Using a very large array, the transmit power of each source or relay (or both) can be made inversely proportional to the number of relay antennas while maintaining a given quality-of-service. At the same time, the achievable sum rate can be increased by a factor of the number of source-destination pairs. We show that when the number of antennas grows to infinity, the asymptotic achievable rates of MRC/MRT and ZF are the same if we scale the power at the sources. Depending on the large scale fading effect, MRC/MRT can outperform ZF or vice versa if we scale the power at the relay.

Place, publisher, year, edition, pages
IEEE , 2013. 4635-4640 p.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-89660DOI: 10.1109/ICC.2013.6655302ISI: 000349673804117ISBN: 978-146733122-7 (print)OAI: oai:DiVA.org:liu-89660DiVA: diva2:608711
Conference
2013 IEEE International Conference on Communications, ICC 2013; Budapest; Hungary
Available from: 2013-02-28 Created: 2013-02-28 Last updated: 2016-09-13

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Ngo, Hien QuocLarsson, Erik G.

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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