An investigation of cooperative slotted aloha with the capture effect

Di Zheng, Yao Zhao, Yu Dong Yao

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

It has been shown that cooperative transmissions improve the throughput of slotted ALOHA. However, the impact of the capture effect on cooperative slotted ALOHA, which has practical significance for radio channels with fading, shadowing and the near-far effect, remains unknown. This paper proposes and analyzes a random access protocol which incorporates cooperative transmissions and the capture effect in slotted ALOHA. Numerical results illustrate that this scheme improves the throughput by 56% in Rayleigh fading channels when the capture ratio is 3 dB as compared to cooperative slotted ALOHA without the capture effect.

Original languageEnglish
Article number6746776
Pages (from-to)572-575
Number of pages4
JournalIEEE Communications Letters
Volume18
Issue number4
DOIs
StatePublished - Apr 2014

Keywords

  • Slotted ALOHA
  • capture effect
  • cooperative transmissions

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