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Robust and distributed beamforming
Department of Electrical and Electronic Engineering, University College London, London, WC1E 7JE, UK..
Department of Electrical and Electronic Engineering, University College London, London, WC1E 7JE, UK..
Information Systems Laboratory, Stanford University, US.
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0003-2298-6774
2009 (English)In: 2009 International Conference on Wireless Communications and Signal Processing, 2009, Vol. WCSP 2009, 1629-1633 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper studies the use of amplify-and-forward (AF) relays for robust beamforming, with the aid of imperfect channel state information (CSI) at the sender. In particular, the maximization of the worst-case signal-to-noise ratio (SNR) at the destination terminal is studied under a bounded spherical region for the norm of CSI error vector. We show that under a condition on the estimated CSI quality, the robust-optimal collaborative-relay beamforming (CRBF) can be obtained by S-Procedure and rank relaxation techniques. In addition, a distributed algorithm is proposed by examining the structure of the optimal CRBF.

Place, publisher, year, edition, pages
2009. Vol. WCSP 2009, 1629-1633 p.
Keyword [en]
Collaborative beamforming, MIMO, Relay, Amplify-and-forward, Distributed algorithm, Distributed beamforming, Error vector, Imperfect channel state information, MIMO relay, Relaxation techniques, Robust beamforming, S-procedures, Beamforming, Optimization, Signal processing, Signal to noise ratio, Channel state information
National Category
Telecommunications Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-35652DOI: 10.1109/WCSP.2009.5371697ISI: 000288686400356Scopus ID: 2-s2.0-77749311716ISBN: 978-1-4244-4856-2 (print)OAI: oai:DiVA.org:kth-35652DiVA: diva2:429572
Conference
International Conference on Wireless Communications and Signal Processing Nanjing, PEOPLES R CHINA, NOV 13-15, 2009
Available from: 2011-07-05 Created: 2011-07-04 Last updated: 2012-01-31Bibliographically approved

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Ottersten, Björn

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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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More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
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Output format
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  • asciidoc
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