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Analytical model of proportional fair scheduling in interference-limited OFDMA/LTE networks
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0001-6682-6559
2013 (English)In: 2013 IEEE 78th Vehicular Technology Conference (VTC Fall), IEEE , 2013, 6692106- p.Conference paper (Refereed)
Abstract [en]

Various system tasks like interference coordination, handover decisions, admission control etc. in upcoming cellular networks require precise mid-term (spanning over a few seconds) performance models. Due to channel-dependent scheduling at the base station, these performance models are not simple to obtain. Furthermore, upcoming cellular systems will be interference-limited, hence, the way interference is modeled is crucial for the accuracy. In this paper we present an analytical model for the SINR distribution of the scheduled subcarriers of an OFDMA system with proportional fair scheduling. The model takes the precise SINR distribution into account. We furthermore refine our model with respect to uniform modulation and coding, as applied in LTE networks. The derived models are validated by means of simulations. In additon, we show that our models are approximate estimators for the performance of rate-based proportional fair scheduling, while they outperform some simpler prediction models from related work significantly.

Place, publisher, year, edition, pages
IEEE , 2013. 6692106- p.
, IEEE Vehicular Technology Conference Proceedings, ISSN 1550-2252
Keyword [en]
Cellular network, Cellular system, Handover decision, Interference co-ordination, Modulation and coding, Performance Model, Prediction model, Proportional fair scheduling
National Category
Communication Systems Telecommunications
URN: urn:nbn:se:kth:diva-136882DOI: 10.1109/VTCFall.2013.6692106ISI: 000330585400086ScopusID: 2-s2.0-84893319781ISBN: 978-146736187-3OAI: diva2:677450
2013 IEEE 78th Vehicular Technology Conference, VTC Fall 2013; Las Vegas, NV; United States; 2 September 2013 through 5 September 2013

QC 20140102

Available from: 2013-12-09 Created: 2013-12-09 Last updated: 2014-03-20Bibliographically approved

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