On throughput performance of channel inequality in IEEE 802.11 WLANs
Journal
IEEE Transactions on Wireless Communications
Journal Volume
7
Journal Issue
11
Pages
4425-4431
Date Issued
2008
Author(s)
Abstract
In this paper we investigate the throughput performance of IEEE 802.11 Distributed Coordination Function (DCF) in the presence of physical-layer (PHY) inequality, i.e. varied channel conditions and/or unequal data rates determined by the Link Adaptation (LA) scheme. We present a theoretical model for DCF protocol with the LA scheme of AutoRate Fallback (ARF). The analysis results show that the system throughput of DCF-based WLANs is determined by the lowest data rate used with stations; throughput sharing among stations depends on the variation of link qualities rather than the difference of data rates. The simulation results validate the accuracy of our analytical model. © 2008 IEEE.
Subjects
DCF; IEEE 802.11 WLAN; Performance analysis
Other Subjects
Analysis results; Analytical models; Channel conditions; Data rates; DCF; IEEE 802.11; Ieee 802.11 distributed coordination functions; IEEE 802.11 WLAN; Link adaptations; Link qualities; Performance analysis; Simulation results; System throughputs; Theoretical models; Throughput performances; Dispersion compensation; Local area networks; Standards; Throughput; Wireless local area networks (WLAN)
Type
journal article
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