Journal
IEEE COMMUNICATIONS LETTERS
Volume 15, Issue 5, Pages 524-526Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2011.031411.102497
Keywords
IEEE 802.11; link adaptation; Markov chain; multiple access control; CSMA/CA; performance modeling
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Funding
- UK Engineering and Physical Sciences Research Council (EPSRC) [EP/1010157/1]
- Engineering and Physical Sciences Research Council [EP/I010157/1] Funding Source: researchfish
- EPSRC [EP/I010157/1] Funding Source: UKRI
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In this paper we investigate rate adaptation algorithm SampleRate, which spends a fixed time on bit-rates other than the currently measured best bit-rate. A simple but effective analytic model is proposed to study the steady-state behavior of the algorithm. Impacts of link condition, channel congestion and multi-rate retry on the algorithm performance are modeled. Simulations validate the model. It is also observed there is still a large performance gap between SampleRate and optimal scheme in case of high frame collision probability.
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