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The application of rate adaptation with finite alphabet in MIMO-OFDM
KTH, School of Information and Communication Technology (ICT), Electronic, Computer and Software Systems, ECS.
KTH, School of Information and Communication Technology (ICT), Electronic, Computer and Software Systems, ECS. IEEE, Sweden .
2005 (English)Conference paper, Published paper (Refereed)
Abstract [en]

To maximize the spectral efficiency of MIMOOFDM under a certain target Bit Error Rate (BER) in an environment where alphabet is discrete and upper bounded, it is necessary to apply adaptive power control and rate adaptation to always find the maximal alphabet size it can support. Although water filling (WF) can achieve the capacity of MIMO fading channel theoretically, it is not a preferable power allocation strategy in practice when alphabet is finite. To get higher spectral efficiency, a modified power control based on water filling can be utilized. In this paper we will compare these bit-, power-loading algorithms in the scenario where instantaneous Channel State Information (CSI) is known to the transmitter. Besides, the Space-Time Block Coding (STBC) with rate adaptation is implemented and it turns out that STBC can even achieve higher spectral efficiency in some cases.

Place, publisher, year, edition, pages
2005. p. 946-949
Series
2005 Fifth International Conference on Information, Communications and Signal Processing ; Volume 2005
Keywords [en]
Power loading algorithms, Rate adaptation, Water filling (WF), Bit error rate, Channel state information, Communication channels (information theory), Fading channels, Finite automata, Orthogonal frequency division multiplexing
National Category
Signal Processing Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-157094Scopus ID: 2-s2.0-34147191018ISBN: 0780392833 (print)ISBN: 9780780392830 (print)OAI: oai:DiVA.org:kth-157094DiVA, id: diva2:771680
Conference
2005 Fifth International Conference on Information, Communications and Signal Processing; Bangkok; Thailand; 6 December 2005 through 9 December 2005
Note

QC 20141215

Available from: 2014-12-15 Created: 2014-12-05 Last updated: 2014-12-15Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • 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