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Throughput Optimization of Dynamic OFDM-FDMA Systems with Inband Signaling
2004 (English)In: Proc. of the 2nd International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks 2004 (WiOpt 2004), 2004Conference paper, Published paper (Refereed)
Abstract [en]

Dynamically assigning subcarriers to terminals in an OFDM-FDMA system optimizes various performance metrics. However, it also requires that terminals are periodically informed about their assigned subcarriers. Hence, the signaling overhead has to be taken into account for both system design and performance evaluation. We investigate two possibilities how to design an inband signaling system, with either a fixed or variable overhead per MAC frame and characterize them as linear optimization problems. We provide performance results for both schemes under a varying number of subcarriers and different terminal speeds and show that the variable scheme outperforms the fixed one for low speeds, that the performance difference vanishes as terminal speeds go up, but also that the fixed scheme is more sensitive to variations in the number of subcarriers.

Place, publisher, year, edition, pages
2004.
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-136696OAI: oai:DiVA.org:kth-136696DiVA: diva2:676692
Conference
2nd International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks 2004 (WiOpt 2004)
Note

QC 20140103

Available from: 2013-12-06 Created: 2013-12-06 Last updated: 2014-01-03Bibliographically approved

Open Access in DiVA

fulltext(173 kB)41 downloads
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Gross, James

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CiteExportLink to record
Permanent link

Direct link
Cite
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