Performance Analysis of the IEEE 802.11 DCF with Time-Varying Channel Environments

Jae-Min LEE  Soo Hee HAN  Hong Seong PARK  Wook Hyun KWON  

IEICE TRANSACTIONS on Communications   Vol.E88-B   No.9   pp.3784-3787
Publication Date: 2005/09/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.9.3784
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
wireless channel environments,  IEEE802.11 DCF,  finite-state Markov channel,  saturation throughput,  average packet delay,  

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In this paper, a refined analytic model is presented for the IEEE 802.11 distributed coordination function (DCF) in a time-varying channel environment. In the proposed model, the channel is modelled using a finite-state Markov (FSM) chain. The saturation throughput and average packet delay are analyzed from the proposed model. It is shown using OPNETTM and UltraSANTM simulations that the proposed model accurately predicts the performance of the IEEE 802.11 DCF.