Slotted Aloha for cognitive radio users and its tagged user analysis

Sanqing Hu, Yu Dong Yao, Asrar U. Sheikh

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Scopus citations

Abstract

Cognitive radio (CR) is a promising dynamic spectrum access technique to improve the utilization of the licensed spectrum. In this paper, we investigate the medium access control (MAC) protocol for CR networks and propose a cognitive MAC using slotted Aloha to enable CR users to access spectrum holes in a licensed frequency band. In order to avoid the high computational complexities of traditional Markovian analysis, we investigate the tagged user analysis (TUA) based on queuing theories in CR scenarios and use TUA to analyze the proposed cognitive MAC performance. The theoretical derivations based on TUA are presented and computer simulations are performed to evaluate the CR network performance as well as TUA accuracy. The network throughput, packet blocking probability, queue length, packet waiting time and response time are evaluated.

Original languageEnglish
Title of host publication2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012
Pages1-5
Number of pages5
DOIs
StatePublished - 2012
Event2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012 - Kaohsiung, Taiwan, Province of China
Duration: 19 Apr 201221 Apr 2012

Publication series

Name2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012

Conference

Conference2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012
Country/TerritoryTaiwan, Province of China
CityKaohsiung
Period19/04/1221/04/12

Keywords

  • cognitive radio
  • medium access control
  • queuing theory
  • slotted Aloha
  • tagged user analysis

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