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Cross-layer packet scheduling for downlink multiuser OFDM systems

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Abstract

This paper proposes a channel and queue aware fair (CQAF) packet scheduling scheme for the downlink packet transmission in multiuser orthogonal frequency division multiplexing (OFDM) systems. By making use of the information on the channel conditions and the queue lengths, the proposed CQAF packet scheduling scheme efficiently allocates the subcarriers, transmission power and modulation level to users under the constraints of total transmission power, the number of subcarriers, bit-error-rate (BER) requirement and generalized processor sharing (GPS)-based fairness requirement. The numerical results show that the proposed CQAF packet scheduling scheme can reduce the transmission delay and queue length significantly while maximizing system throughput and maintaining fairness among users.

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Authors and Affiliations

  1. Department of Electronic Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    JunBo Wang

  2. National Mobile Communications Research Laboratory, Southeast University, Nanjing, 210096, China

    HuaMin Chen, Ming Chen & JiangZhou Wang

Authors
  1. JunBo Wang
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  2. HuaMin Chen
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  3. Ming Chen
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  4. JiangZhou Wang
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Corresponding author

Correspondence to JunBo Wang.

Additional information

Supported by the National High-Tech Research & Development Program of China (Grant Nos. 2007AA01Z207, 2007AA01Z268), Program for New Century Excellent Talents in University, Research Fund of National Mobile Communications Research Laboratory, Southeast University (Grant No. 2008A06), the Open Research Fund of National Mobile Communications Research Laboratory, Southeast University and the startup fund of Nanjing University of Aeronautics and Astronautics, and the Open Research Fund of State Key Laboratory of Advance Optical Cmmunication Systems and Networks (Grant No. 2008SH06)

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Wang, J., Chen, H., Chen, M. et al. Cross-layer packet scheduling for downlink multiuser OFDM systems. Sci. China Ser. F-Inf. Sci. 52, 2369–2377 (2009). https://doi.org/10.1007/s11432-009-0219-1

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  • DOI: https://doi.org/10.1007/s11432-009-0219-1

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