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Development of a low complexity QoE aware scheduling algorithm for OFDMA networks
2009 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

OFDMA is one of the most promising technologies to support the high speed wireless services. It is a multiple access scheme of current and near future terrestrial and satellite wireless technologies which is used in satellite communication or remote control for space robots or flights for cooperative work. A good resource scheduling scheme for OFDMA can overcome the packet losses due to varying nature of channel fading. In the IEEE 802.16 standards, the scheduling is left unspecified. However, it has significant impact on system performance and QoS. In this master thesis, we developed the low complexity frequency selective scheduler aware of the current instantaneous speech quality in terms of R-Score particularly combining different metrics like current channel quality and urgency of the packets in scheduling decision for OFDMA system. The schedulers are simulated by using Matlab and the performance of the different schedulers is compared in different overload scenarios ranging from light to severe. The simulative performance evaluation is performed at the example of VoIP transmissions over the IEEE 802.16 band AMC mode.

Place, publisher, year, edition, pages
Keyword [en]
Technology, OFDMA, scheduler, QoE, IEEE 802.16, WiMAX, R-Score, scheduling, Algorithm, Frequency-selective Scheduling, Band AMC
Keyword [sv]
URN: urn:nbn:se:ltu:diva-55956ISRN: LTU-PB-EX--09/004--SELocal ID: cbffdb17-76b1-402a-81a2-e00ff771ec86OAI: diva2:1029342
Subject / course
Student thesis, at least 30 credits
Educational program
Space Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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