Performance analysis of volume-based spectrum sensing for cognitive radio

Lei Huang, Cheng Qian, Yuhang Xiao, Q. T. Zhang

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

In this work, the volume-based method for spectrum sensing is analyzed, which is able to provide the desirable properties of constant false-alarm rate, robustness against deviation from independent and identically distributed (IID) noise and being free of noise uncertainty. By computing the first and second moments for the signal-absence and signal-presence hypotheses together with using the Gamma distribution approximation, we derive accurate analytic formulae for the false-alarm and detection probabilities for IID noise situations. This enables us to develop theoretical decision threshold as well as receiver operating characteristic. Numerical results are presented to validate our theoretical findings.

Original languageEnglish (US)
Article number6872822
Pages (from-to)317-330
Number of pages14
JournalIEEE Transactions on Wireless Communications
Volume14
Issue number1
DOIs
StatePublished - Jan 1 2015

Keywords

  • Cognitive radio
  • Gamma distribution
  • multiple antenna
  • spectrum sensing
  • volume

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