Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/7330
Title: Proportional Fair Scheduling Algorithm in OFDMA-Based Wireless Systems with QoS Constraints
Authors: Girici, Tolga
Zhu, Chenxi
Agre, Jonathan R.
Ephremides, Anthony
Keywords: Heterogeneous traffic
IEEE 802.16
orthogonal frequency division multiple access (OFDMA)
quality of service (QoS)
proportional fairness
resource allocation
WiMax
Issue Date: 2010
Publisher: Korean Inst Communications Sciences (K I C S)
Abstract: In this work we consider the problem of downlink resource allocation for proportional fairness of long term received rates of data users and quality of service for real time sessions in an OFDMA-based wireless system. The base station allocates available power and subchannels to individual users based on long term average received rates, quality of service (QoS) based rate constraints and channel conditions. We formulate and solve a joint bandwidth and power optimization problem, solving which provides a performance improvement with respect to existing resource allocation algorithms. We propose schemes for flat as well as frequency selective fading cases. Numerical evaluation results show that the proposed method provides better QoS to voice and video sessions while providing more and fair rates to data users in comparison with existing schemes.
URI: https://doi.org/10.1109/JCN.2010.6388432
https://hdl.handle.net/20.500.11851/7330
ISSN: 1229-2370
1976-5541
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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