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Adaptive MIMO systems in 2x2 uncorrelated Rayleigh fading channel
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
2007 (English)In: 2007 IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, VOLS 1-9, NEW YORK: IEEE , 2007, 1115-1119 p.Conference paper, Published paper (Refereed)
Abstract [en]

Adaptive MQAM modulation is used to maximize spectral efficiency while keeping bit error rate (BER) under a target level. The closed-form expressions of the average spectral efficiency of adaptive modulation system are derived for beamforming (BF), singular value decomposition (SVD), Space-Time Block Coding (STBC) and spatial multiplexing with zero-forcing (ZF) receiver in uncorrelated flat Rayleigh fading channel. Further, a low-complexity adaptive scheme that switches across BF and SVD in closed loop systems, STBC and ZF in open loop systems is suggested to enhance the spectral efficiency on the basis of the closed form expressions.

Place, publisher, year, edition, pages
NEW YORK: IEEE , 2007. 1115-1119 p.
Series
IEEE Wireless Communications and Networking Conference, ISSN 1525-3511
Keyword [en]
adaptive modulation, MIMO, BF, SVD, STBC, ZF
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-39373DOI: 10.1109/WCNC.2007.211ISI: 000252337102024Scopus ID: 2-s2.0-36348934958ISBN: 978-1-4244-0658-6 (print)OAI: oai:DiVA.org:kth-39373DiVA: diva2:440911
Conference
IEEE Wireless Communications and Networking Conference. Hong Kong, PEOPLES R CHINA. MAR 11-15, 2007
Available from: 2011-09-14 Created: 2011-09-09 Last updated: 2011-09-14Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • de-DE
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  • nn-NB
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  • Other locale
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Output format
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  • asciidoc
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