Soft cooperative spectrum sensing performance under imperfect and non identical reporting channels

Mahdi Ben Ghorbel, Haewoon Nam, Mohamed-Slim Alouini

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Cooperation among cognitive radio users improves the spectrum sensing performance by combining local decisions measured over independent sensing channels, allowing reduction of miss-detection and false alarm probabilities. While most of the works in cooperative spectrum sensing techniques assume perfect channels between the cooperating users, this paper studies the effect of imperfect channels when local users report their sensed information to the fusion center. Cooperative detection and false-alarm probabilities are derived for a general scheme of imperfect reporting channels under non necessarily identical sensing and reporting channels. Numerical simulations show that imperfect reporting channels should be considered to optimize the cooperative sensing in terms of consumed energy and probability of error.
Original languageEnglish (US)
Pages (from-to)227-230
Number of pages4
JournalIEEE Communications Letters
Volume19
Issue number2
DOIs
StatePublished - Feb 2015

ASJC Scopus subject areas

  • Modeling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

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