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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Cross-Layer Resource Allocation Scheme for WLANs with Multipacket Reception

  • Xu, Lei (College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics) ;
  • Xu, Dazhuan (College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics) ;
  • Zhang, Xiaofei (College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics) ;
  • Xu, Shufang (College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics)
  • Received : 2010.05.02
  • Accepted : 2010.10.11
  • Published : 2011.04.30
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Abstract

Tailored for wireless local area networks, the present paper proposes a cross-layer resource allocation scheme for multiple-input multiple-output orthogonal frequency-division multiplexing systems. Our cross-layer resource allocation scheme consists of three stages. Firstly, the condition of sharing the subchannel by more than one user is studied. Secondly, the subchannel allocation policy which depends on the data packets' lengths and the admissible combination of users per subchannel is proposed. Finally, the bits and corresponding power are allocated to users based on a greedy algorithm and the data packets' lengths. The analysis and simulation results demonstrate that our proposed scheme not only achieves significant improvement in system throughput and average packet delay compared with conventional schemes but also has low computational complexity.

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