Slotted Aloha with multi-AP diversity and APS transmit beamforming

Di Zheng, Yu Dong Yao

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Slotted Aloha is an effective random access protocol and can also be an important element of more advanced media access protocols. This paper investigates slotted Aloha in a radio environment with multiple access points. Specifically, we examine the impact of multi-access-point (multi-AP) diversity on the performance of slotted Aloha. The paper considers both omni-directional (OM) and beamforming (BF) antennas at transmission nodes. This leads to the investigation and comparison of four different network scenarios, i.e., OM with multi-AP diversity, OM without multi-AP diversity, BF with multi-AP diversity and BF without multi-AP diversity. Performance evaluations and comparisons are presented in terms of throughput and average packet delay.

Original languageEnglish
Article number119
JournalEurasip Journal on Wireless Communications and Networking
Volume2011
Issue number1
DOIs
StatePublished - 1 Dec 2011

Keywords

  • Average packet delay
  • Beamforming
  • Capture effect
  • Multi-access-point diversity
  • Rayleigh fading
  • Slotted Aloha
  • Throughput

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