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Volume 30 Issue 8
Jan.  2011
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Zheng Pei-chao, Jia Shao-jun, Song Han-tao. A QoS Guaranteed Packet Scheduling Algorithm for OFDMA Systems[J]. Journal of Electronics & Information Technology, 2008, 30(8): 1779-1782. doi: 10.3724/SP.J.1146.2007.01493
Citation: Zheng Pei-chao, Jia Shao-jun, Song Han-tao. A QoS Guaranteed Packet Scheduling Algorithm for OFDMA Systems[J]. Journal of Electronics & Information Technology, 2008, 30(8): 1779-1782. doi: 10.3724/SP.J.1146.2007.01493

A QoS Guaranteed Packet Scheduling Algorithm for OFDMA Systems

doi: 10.3724/SP.J.1146.2007.01493
  • Received Date: 2007-09-18
  • Rev Recd Date: 2008-01-25
  • Publish Date: 2008-08-19
  • In Orthogonal Frequency Division Multiple Access (OFDMA) systems, utilizing Proportional Fair (PF) algorithm can enhance system capacity, fairness, and performance. PF algorithm is extended, and a quality of service guaranteed packet scheduling algorithm is proposed for OFDMA systems. Users with high data rate requirements but in poor instantaneous channel state may be allocated excessive subcarriers. To prevent that situation, the algorithm uses dynamic weight factor. In a scheduling process, the weight factors of remaining subcarriers update as a subcarrier is allocated. Simulation results show that the proposed algorithm has a better performance in maintaining fairness than PF algorithm for real time services.
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  • 刘俊琳, 邓单, 朱近康, 邱玲. 一种基于频域相关实现OFDM时频同步的方法[J].电子与信息学报.2006, 28(8):1354-1359浏览[2]Li Guo-qing and Liu Hui. Downlink radio resource allocationfor multi-cell OFDMA system[J]. IEEE Trans. on WirelessCommunications, 2006, 5(12): 3451-3459.[3]Choi Jung Min, Lee Hyojin, Chung Hyun Kyu, and Lee JaeHong. Sounding method for proportional fair scheduling inofdma/fdd uplink[C]. IEEE Vehicular Technology Conference,2007 IEEE 65th Vehicular Technology Conference- VTC2007-Spring, Piscataway, NJ, USA, Apr. 22-25, 2007: 2732-2735.[4]Hwang Sungho and Cho Ho-shin. A novel channel allocationand scheduling algorithm in OFDMA system[C]. IEEEVehicular Technology Conference, 2006 IEEE 64th VehicularTechnology Conference, VTC-2006 Fall, Montreal, QC,Canada, Sep. 25-28, 2006: 1078-1082.[5]Mustafa E, Sinem C, and Pravin V. QoS aware adaptiveresource allocation techniques for Fair scheduling in OFDMAbased broadband wireless access systems[J].IEEE Trans. onBroadcasting.2003, 49(4):362-370[6]Suh Changho, Park Seunghoon, and Cho Youngkwon.Efficient algorithm for proportional fairness scheduling inmulticast OFDM systems[C][J].2005 IEEE 61st VehicularTechnology Conference ..VTC 2005-Spring Stockholm:Paving the Path for a Wireless Future, Dallas, Texas, USA,Sep. 25-2.2005, 61:1880-1884[7]Morris P D and Athaudage C R N. Fairness based resourceallocation for multi-user MIMO-OFDM systems[C]. IEEEVehicular Technology Conference, V1, 2006 IEEE 63rdVehicular Technology Conference, VTC 2006-Spring-Proceedings, Melbourne, Australia, May 7-10, 2006, 1:314-318.[8]Patrick S, Sarah K W, Leonard J C J, and Bjorn O.Opportunistic beamforming and scheduling for OFDMAsystems[J].IEEE Trans. on Communications.2007, 55(5):941-952[9]He Zhi-qiang, Xu Wen-jun, Niu Kai, and Wu Wei-ling.Proportional fairness in OFDMA systems: Upper, lowerbounds and reassignment algorithm[C]. World WirelessCongress, Proceedings - 8th World Wireless Congress, WWC2007, San Francisco, CA, United States, May 21-23, 2007:190-193.[10]薛金银, 焦秉立. 一种基于最小误码率的OFDM 自适应比特及功率分配算法[J].电子与信息学报.2006, 28(7):1279-1281浏览[11]Zhang Ying-jun and Letaief Khaled Ben. Multiuser adaptivesubcarrier-and-bit allocation with adaptive cell selection forofdm systems[J].IEEE Trans. on Wireless Communications.2004, 3(5):1566-1575
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