Sequential cooperative sensing for multi-channel cognitive radios

Seung Jun Kim, Georgios B. Giannakis

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

2 Scopus citations

Abstract

A sequential cooperative spectrum sensing algorithm is developed for multi-channel cognitive radio (CR) systems. Each CR quantizes the local observations to a single-bit datum per sample per channel, and relays the data sequentially to the fusion center for joint decision. The optimal trade-off between the sensing time and the sensing reliability is sought with the objective of maximizing the overall throughput of the CR system under prescribed "collision" probability constraints. A constrained dynamic programming formulation is developed and a reduced-complexity approximate solution is derived. Numerical tests verify the efficacy of cooperation and sequential processing for spectrum sensing.

Original languageEnglish (US)
Title of host publication2010 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2010 - Proceedings
Pages2950-2953
Number of pages4
DOIs
StatePublished - Nov 8 2010
Event2010 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2010 - Dallas, TX, United States
Duration: Mar 14 2010Mar 19 2010

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (Print)1520-6149

Other

Other2010 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2010
CountryUnited States
CityDallas, TX
Period3/14/103/19/10

Keywords

  • Cognitive radio
  • Sequential detection
  • Spectrum sensing

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