Cognitive relaying and opportunistic spectrum sensing in unlicensed multiple access channels

Jonathan Gambini, Osvaldo Simeone, Umberto Spagnolini

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

12 Scopus citations

Abstract

In this paper, a cognitive multiple access channel with one primary node and M secondary nodes is considered, and the impact of the following techniques on the stability region of the system is investigated: (i) relaying by the secondary nodes of the primary traffic (cognitive relaying); (ii) opportunistic spectrum sensing at the secondary nodes. Specifically, inner bounds on the stability region of the system for the case of M = 2 secondary nodes are derived by assuming cognitive relaying and both simultaneous and opportunistic spectrum sensing at the secondary nodes. The analysis is carried out by defining convenient systems which statistically dominate the original ones (dominant systems). Numerical results provide insight into the performance advantages of the different strategies in terms of stability region.

Original languageEnglish (US)
Title of host publication2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications - Proceedings, ISSSTA2008
Pages371-375
Number of pages5
DOIs
StatePublished - Dec 25 2008
Event2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA2008 - Bologna, Italy
Duration: Aug 25 2008Aug 28 2008

Publication series

NameIEEE International Symposium on Spread Spectrum Techniques and Applications

Other

Other2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA2008
CountryItaly
CityBologna
Period8/25/088/28/08

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Applied Mathematics

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