Log-average-SNR ratio and cooperative spectrum sensing

Dian Wu Yue, Chung Ming Lau, Qian Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


In this paper, we analyze the spectrum-sensing performance of a cooperative cognitive radio (CR) network consisting of a number of CR nodes and a fusion center (FC). We introduce the «log-average-SNR ratio» that relates the average SNR of the CRnode- FC link and that of the primary-user-CR-node link. Assuming that the FC utilizes theK-out-of-N rule as its decision rule, we derive exact expressions for the sensing gain and the coding gain - parameters used to characterize the CR network performance at the high SNR region. Based on these results, we determine ways to optimize the performance of the CR network.
Original languageEnglish
Article number7575797
Pages (from-to)311-319
Number of pages9
JournalJournal of Communications and Networks
Issue number3
Publication statusPublished - 1 Jun 2016


  • Coding gain
  • cognitive radio (CR)
  • log-average-SNRratio
  • missing-detection probability
  • sensing gain
  • spectrum sensing

ASJC Scopus subject areas

  • Information Systems
  • Computer Networks and Communications


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