Abstract—This paper presents an 802.11b Distributed coordinated function (DCF) approach that specifically concentrates on the multi-rate WLAN. In this approach we assume a saturated condition where every node in the network have a packet to transmit at any time and also a clear channel condition in which there is no hidden terminal in the network. This saturation throughput and delay are used to analyze the DCF. This work shows that in a slowly changing channel a smaller Sm and larger Fm for the ARF protocols needs to be set and used for better network performance.
Index Terms—IEEE 802.11b, DCF, multi-rate WLAN, CSMA/CA, ARF
The Author is with the Department of Electronics and Computer Engineering, Nnamdi Azikiwe University Awka, Anambra State, Nigeria (E-mail: vicugoo@yahoo.com ,obynola@yahoo.com, austinazu@yahoo.com, hontheo@yahoo.com)
Cite: Idigo V. E., Oguejiofor O. S., Azubogu A. C. O., Alumona T. L., and Ifeagwu E. N., "Modelling and Empirical Analysis of IEEE 802.11b Distributed Coordination Function (DCF) In a Multi-Rate Wireless LAN," International Journal of Computer Theory and Engineering vol. 3, no. 5, pp. 656-661, 2011.
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