Referenced Items are not available for this document.
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 auto rate 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.
Published in:
Wireless Communications, IEEE Transactions on
(Volume:7
,
Issue:
11
)
Date of Publication: November 2008
- Page(s):
- 4425 - 4431
- ISSN :
- 1536-1276
- INSPEC Accession Number:
- 10348439
- Digital Object Identifier :
- 10.1109/T-WC.2008.070655
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 02 December 2008
- Issue Date :
- November 2008
- Sponsored by :
- IEEE Communications Society
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