Throughput analysis of IEEE 802.11 multirate WLANs with collision aware rate adaptation algorithm

Authors:
Dhanasekaran Senthilkumar;A. Krishnan
Affiliations:
Department of Electronics and Communication Engineering, K. S. Rangasamy College of Technology, Tamilnadu, India 637215;Department of Electronics and Communication Engineering, K. S. Rangasamy College of Technology, Tamilnadu, India 637215
Venue:
International Journal of Automation and Computing
Year:
2010

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Abstract

This paper presents a mathematical model that analyzes the throughput of the IEEE 802.11b distributed coordination function (DCF) with the collision aware rate adaptation (CARA) algorithm. IEEE 802.11 WLANs provide multiple transmission rates to improve system throughput by adapting the transmission rate to the current channel conditions. The system throughput is determined by some stations using low transmission rates due to bad channel conditions. CARA algorithm does not disturb the existing IEEE 802.11b formats and it can be easily incorporated into the commercial wireless local area networks (WLAN) devices. Finally, we verify our findings with simulation.