Volume 35 Issue 6
Jun.  2009
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Chen Shengbo, Chen Wei, Liu Xuminget al. Cross-layer approach to allow MIMO-SDMA in WLAN[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(6): 762-765. (in Chinese)
Citation: Chen Shengbo, Chen Wei, Liu Xuminget al. Cross-layer approach to allow MIMO-SDMA in WLAN[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(6): 762-765. (in Chinese)

Cross-layer approach to allow MIMO-SDMA in WLAN

  • Received Date: 20 May 2008
  • Publish Date: 30 Jun 2009
  • Multiple input multiple output (MIMO), as an important technology to enhance the physical layer capability, can achieve this target via spatial reuse. An medium access control(MAC) protocol was proposed for uplink transmissions in WLAN, where both stations and access point(AP) were equipped with multiple antennas. This protocol solves those problems existing in utilizing MIMO under current 802.11 protocol, for example, how to deploy preamble (training sequence) used for channel estimation and how to enable simultaneous data transmissions via a cross-layer approach. Furthermore, a 3-dimension discrete-time Markov model was developed to analyze the performance of the proposed WLAN scheme. The analytical results were verified by the simulations, and numerical results show that system throughput can be significantly improved by the proposed scheme compared to conventional schemes.

     

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