Theoretic analysis of IEEE 802.11 rate adaptation algorithm SampleRate

Jianhua He, Wenyang Guan, Lin Bai, Kai Chen

    Research output: Contribution to journalArticlepeer-review


    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.
    Original languageEnglish
    Pages (from-to)524-526
    Number of pages3
    JournalIEEE Communications Letters
    Issue number5
    Early online date24 Mar 2011
    Publication statusPublished - May 2011


    • CSMA/CA
    • IEEE 802.11
    • Markov chain
    • link adaptation
    • multiple access control
    • performance modeling


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