GLRT based cooperative spectrum sensing with location information

Ning Han, Hongbin Li, Jun Fang

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

Abstract

In this paper, we address the problem of cooperatively detecting a primary user with unknown transmit power among multiple cognitive radio (CR) users with their location information available at the CR base station. A generalized likelihood ratio test (GLRT) is developed at the CR base station to first estimate the transmit power of the primary user and then detect the primary user signal. The maximum likelihood (ML) estimate of the unknown transmit power is discussed in details in order to provide guidelines for the design of the cooperative detector. Performance verification of the ML estimate of the unknown transmit power is provided. Meanwhile, asymptotic performance analysis for the proposed GLRT is also presented. Simulation results show that the proposed detector exhibits better performance than conventional techniques in terms of detection probability with limited observations.

Original languageEnglish
Title of host publicationConference Record of the 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
Pages496-500
Number of pages5
DOIs
StatePublished - 2010
Event44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010 - Pacific Grove, CA, United States
Duration: 7 Nov 201010 Nov 2010

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393

Conference

Conference44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
Country/TerritoryUnited States
CityPacific Grove, CA
Period7/11/1010/11/10

Keywords

  • Cognitive radio
  • cooperative spectrum sensing
  • generalized likelihood ratio test
  • maximum likelihood estimate

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