Saturation throughput analysis of multi-rate IEEE 802.11 wireless networks

Der Jiunn Deng, Bin Li, Lianfen Huang, Chih Heng Ke, Yueh Min Huang

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


IEEE 802.11 protocol supports adaptive rate mechanism, which selects the transmission rate according to the condition of the wireless channel, to enhance the system performance. Thus, research of multi-rate IEEE 802.11 medium access control (MAC) performance has become one of the hot research topics. In this paper, we study the performance of multi-rate IEEE 802.11 MAC over a Gaussian channel. An accurate analytical model is presented to compute the system saturation throughput. We validate our model in both single-rate and multi-rate networks through various simulations. The results show that our model is accurate and channel error has a significant impact on system performance. In addition, our numerical results show that the performance of single-rate IEEE 802.11 DCF with basic access method is better than that with RTS/CTS mechanism in a high-rate and high-load network and vice versa. In a multi-rate network, the performance of IEEE 802.11 DCF with RTS/CTS mechanism is better than that with basic access method in a congested and error-prone wireless environment.

Original languageEnglish (US)
Pages (from-to)1102-1112
Number of pages11
JournalWireless Communications and Mobile Computing
Issue number8
StatePublished - Aug 2009

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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