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A QoS-aware proportional fair scheduler for opportunistic OFDM
KTH, Superseded Departments, Signals, Sensors and Systems.
KTH, Superseded Departments, Signals, Sensors and Systems.
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0003-2298-6774
2004 (English)In: VTC2004-FALL, Los Angeles, CA, 2004, Vol. 60, no 1, p. 558-562Conference paper, Published paper (Refereed)
Abstract [en]

OFDM is an attractive technique to implement multiuser diversity for the downlink. This paper deals with the problem of combining the increased cell throughput of multiuser diversity schemes with a fair distribution of resources among the users. A proportional fair scheduler for opportunistic OFDM is proposed. Its key features are that it can accomodate several quality-of-service (QoS) classes, that it has a tunable fairness level, and that it can be integrated with an opportunistic beamformer to increase system fairness. Simulation results show that the cell throughput of the opportustic scheme approaches that of a more complex smart antenna scheme for many users. For a densely populated system, the proposed scheme shows a graceful QoS degradation, possibly leading to a high average user satisfaction. The fairness parameter effectively tunes the scheduler between high cell throughput and high fairness.

Place, publisher, year, edition, pages
Los Angeles, CA, 2004. Vol. 60, no 1, p. 558-562
Keyword [en]
Code division multiple access, Computer simulation, Feeding, Mathematical models, Quality of service, Signal to noise ratio, Downlink, Multiuser diversity, Proportional fair (PF), Transmit antenna, Orthogonal frequency division multiplexing
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-35676DOI: 10.1109/VETECF.2004.1400069ISI: 000227931900118Scopus ID: 2-s2.0-17144382101OAI: oai:DiVA.org:kth-35676DiVA, id: diva2:429190
Conference
60th IEEE Vehicular Technology Conference Los Angeles, CA, SEP 26-29, 2004
Note
QC 20110704Available from: 2011-07-04 Created: 2011-07-04 Last updated: 2012-06-07Bibliographically approved

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CiteExportLink to record
Permanent link

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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