Reporting order control for fast primary detection in cooperative spectrum sensing

Gosan Noh, Hano Wang, Junho Jo, Byoung Hoon Kim, Daesik Hong

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Although cooperative spectrum sensing improves sensing accuracy in cognitive radio systems, additional reporting time is required to report the local test statistics until the existence of the primary user is verified, resulting in detection delay. To reduce the reporting time, we propose controlling the reporting order of the local test statistics, so that the local test statistics are reported to the fusion center in descending order of magnitude. As a result, the global test statistic at the fusion center accumulates faster than the case without reporting order control, reducing the reporting time needed to determine when the threshold for detecting the primary user has been exceeded. To do this, we propose, based on distributed access control, a combination of order identification, which finds the order of the local test statistic, and transmission probability calculation according to the identified order. Simulation results show that the proposed reporting order control significantly reduces the reporting time for detecting the primary user.

Original languageEnglish
Article number6032117
Pages (from-to)4058-4063
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Volume60
Issue number8
DOIs
Publication statusPublished - 2011 Oct 1

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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