On the energy detection of unknown signals over fading channels

Fadel F. Digham*, Mohamed Slim Alouini, Marvin K. Simon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1569 Scopus citations


This letter addresses the problem of energy detection of an unknown signal over a multipath channel. It starts with the no-diversity case, and presents some alternative closed-form expressions for the probability of detection to those recently reported in the literature. Detection capability is boosted by implementing both square-law combining and square-law selection diversity schemes.

Original languageEnglish (US)
Pages (from-to)21-24
Number of pages4
JournalIEEE Transactions on Communications
Issue number1
StatePublished - Jan 2007
Externally publishedYes


  • Diversity schemes
  • Energy detection
  • Fading channels
  • Low-power applications
  • Square-law detector
  • Unknown signal detection

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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