Average SNR and ergodic capacity analysis for opportunistic df relaying with outage over rayleigh fading channels

Sungeun Lee, Myeongsu Han, Daesik Hong

Research output: Contribution to journalArticle

53 Citations (Scopus)


In the paper, we deal with a single-selection opportunistic relaying with the decode-and-forward (DF) protocol over Rayleigh fading channels. The exact end-to-end average signalto- noise ratios (SNR) and ergodic capacities of both proactive and reactive opportunistic relaying are derived as a closed-form for arbitrary link SNR. In addition, the effective ergodic capacity satisfying the minimum required data rate without outage is also identified for both relaying schemes. The analysis results are used to demonstrate which relaying scheme outperforms the other for given system parameters.

Original languageEnglish
Article number5089956
Pages (from-to)2807-2812
Number of pages6
JournalIEEE Transactions on Wireless Communications
Issue number6
Publication statusPublished - 2009 Jun 1


All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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