Stable throughput of cognitive radios with relaying capability

Osvaldo Simeone, Yeheskel Bar-Ness, Umberto Spagnolini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A cognitive interference channel consists of two single-user links, one licensed to use the spectral resource (primary) and one unlicensed (secondary or cognitive). According to the cognitive radio principle, the activity of the secondary link should not interfere with the performance of the primary. The cognitive transmitter is allowed to access the channel only when sensed idle. In this paper, the advantages of having the cognitive transmitter acting as a "transparent relay" for the packets of the primary are investigated in terms of stable throughput (packets/slot). The analysis accounts for random packet arrivals, sensing errors due to fading at the secondary link, and power allocation at the secondary transmitter based on long-term measurements.

Original languageEnglish (US)
Title of host publication44th Annual Allerton Conference on Communication, Control, and Computing 2006
PublisherUniversity of Illinois at Urbana-Champaign, Coordinated Science Laboratory and Department of Computer and Electrical Engineering
Pages623-628
Number of pages6
Volume2
ISBN (Electronic)9781604237924
StatePublished - Jan 1 2006
Event44th Annual Allerton Conference on Communication, Control, and Computing 2006 - Monticello, United States
Duration: Sep 27 2006Sep 29 2006

Other

Other44th Annual Allerton Conference on Communication, Control, and Computing 2006
CountryUnited States
CityMonticello
Period9/27/069/29/06

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Computer Networks and Communications

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