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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2008, Vol. 9 Issue (10): 1309-1317    DOI: 10.1631/jzus.A0720128
Electrical & Electronic Engineering     
Performance analysis of IEEE 802.11 DCF networks
Krzysztof SZCZYPIORSKI, Józef LUBACZ
Institute of Telecommunications, Warsaw University of Technology, Nowowiejska 15/19, Warsaw 00-665, Poland
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Abstract  This paper presents an analytical saturation throughput model of IEEE 802.11 DCF (distributed coordination function) with basic access in ad hoc mode. The model takes into account freezing of the backoff timer when a station senses busy channel. It is shown that taking into account this feature of DCF is important in modeling saturation throughput by yielding more accurate and realistic results than models known from literature. The proposed analytical model also takes into account the effect of transmission errors. All essential features of the proposed analytical approach are illustrated with numerical results. The presentation of the model is proceeded by an overview of approaches to IEEE 802.11 network performance evaluation presented in the literature.

Key words： IEEE 802.11      Distributed coordination function (DCF)      CSMA/CA      Modeling     
Received: 21 December 2007     
CLC:  TN92  
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Krzysztof SZCZYPIORSKI
Józef LUBACZ
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Krzysztof SZCZYPIORSKI, Józef LUBACZ. Performance analysis of IEEE 802.11 DCF networks. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2008, 9(10): 1309-1317.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0720128     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2008/V9/I10/1309

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