Performance analysis of wireless MAC protocols with rayleigh fading, log-normal shadowing and capture effects

Jae Hyun Kim, Jong Kyu Lee, Sung Ho Cho

Research output: Contribution to journalArticle

Abstract

The channel throughput and packet delay of wireless medium access control (MAC) protocols with Rayleigh fading, shadowing and capture effect are analyzed. We consider CSMA/CA protocols as the wireless MAC protocols, since CSMA/CA protocols are based on the standard for wireless Local Area Networks (LANs) IEEE 802. 11. We analyze the channel throughput and packet delay for three types of CSMA/CA protocols; Basic CSMA/CA, Stop-and-Wait CSMA/CA and 4-Way Handshake CSMA/CA. We calculate the capture probability of an Access Point (AP) in a channel with Rayleigh fading, shadowing, and near-far effects, and we derive the throughput and packet delay for the various protocols. We have found that the performance of CSMA/CA in a radio channel model is 50 percent less than in an error free channel model in low traffic load, while the throughput and packet delay of CSMA/CA in a radio channel model show better performance than in an error free channel model in high traffic load. We also found that the 4Way Handshake CSMA/CA protocol is superior to the other CSMA/CA protocols in high traffic load.

Original languageEnglish
Pages (from-to)73-81
Number of pages9
JournalIEICE Transactions on Communications
VolumeE81-B
Issue number1
Publication statusPublished - 1998 Jan 1

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Keywords

  • CSMA/CA
  • Capture effect
  • Mac protocol
  • Rayleigh fading
  • Wireless lan

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