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Volume 40 Issue 10
Oct.  2014
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Journal of Beijing University of Aeronautics and Astronautics  > 2014  >  40(10): 1451-1456.
Liu Zhuang, Li Xi, Ji Honget al. Packet scheduling algorithm for multi-service MIMO-OFDMA downlink systems[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(10): 1451-1456. doi: 10.13700/j.bh.1001-5965.2013.0616(in Chinese)
Citation: Liu Zhuang, Li Xi, Ji Honget al. Packet scheduling algorithm for multi-service MIMO-OFDMA downlink systems[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(10): 1451-1456. doi: 10.13700/j.bh.1001-5965.2013.0616(in Chinese)
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Packet scheduling algorithm for multi-service MIMO-OFDMA downlink systems

doi: 10.13700/j.bh.1001-5965.2013.0616

  • Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

  • Received Date: 30 Oct 2013
  • Publish Date: 20 Oct 2014
    Abstract
  • A utility-based packet scheduling algorithm was proposed for downlink multiuser multiple input multiple output-orthogonal frequency division multiplexing access (MIMO-OFDMA) systems. The proposed algorithm not only considered the channel condition of physical layer, but also utilized the transmitting buffer status information and the automatic repeat-request (ARQ) feedback information to help improve the system performance. In order to satisfy the different qualities of service (QoS) of multi-service, different utility functions were designed for different traffics and then the scheduling problem was formulated into a problem of overall system utility maximization. Moreover, considered the limits of practical long term evolution (LTE), a heuristic algorithm with low computational complexity was proposed. The simulation results show that the proposed algorithm outperforms the existing algorithms in terms of the system throughput and the packet loss rate and can also guarantee the QoS demand of real-time traffic.

     

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