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Optimal V-BLAST ordering in fast Rayleigh fading: A linear assignment problem
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0003-2298-6774
Communication Theory, Communications Laboratory, Dresden University of Technology, D-01062 Dresden, Germany.
2011 (English)In: IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2011, 366-370 p.Conference paper, Published paper (Refereed)
Abstract [en]

We explore a novel approach to perform decoding-order optimization in the vertical Bell Labs layered space-time (V-BLAST) architecture. Allowing for simultaneous transmission of multiple, separately encoded data streams, the V-BLAST transmit-receive scheme applies to the uplink of a multi-user communication system. A multi-antenna receiver decodes data streams successively, dealing with inter-stream interference by means of cancelling and nulling; interference from previously decoded streams is cancelled by subtraction, and remaining interference is nulled by linear equalization. The order in which the streams are decoded can have a noticeable impact on system performance. We consider the optimization of a fixed decoding order in fast Rayleigh fading, based on long-term channel-fading parameters. For a wide range of performance measures, we show that the fast-fading ordering problem can be treated as a classical linear assignment problem, allowing a solution using existing, efficient algorithms.

Place, publisher, year, edition, pages
2011. 366-370 p.
Keyword [en]
Communication systems, decision feedback equalizers, fading channels, successive interference cancellation, V-BLAST, ZF
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-60647DOI: 10.1109/SPAWC.2011.5990431ISI: 000299165600074Scopus ID: 2-s2.0-80052681544ISBN: 978-142449332-6 (print)OAI: oai:DiVA.org:kth-60647DiVA: diva2:477645
Conference
IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) JUN 26-29, 2011, San Francisco, USA
Note
QC 20120209Available from: 2012-01-13 Created: 2012-01-13 Last updated: 2012-04-04Bibliographically approved

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Ottersten, Björn

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CiteExportLink to record
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  • apa
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