Performance analysis of incremental opportunistic relaying over identically and non-identically distributed cooperative paths

Kyu Sung Hwang, Young Chai Ko, Mohamed Slim Alouini

Research output: Contribution to journalArticle

109 Citations (Scopus)


In this paper, we consider an incremental relaying protocol based on an amplify-and-forward transmission in conjunction with the best relay selection scheme over non-identically distributed relay channels. In order to satisfy the spectral efficiency and the bit error rate (BER) requirements, adaptive modulation is applied to our proposed scheme. We derive the average spectral efficiency, average BER and outage probability for the performance analysis of our proposed scheme. For a more tractable analysis, we start with an upper bound for the combined signal-to-noise ratio at the destination and provide closed-form expressions for independent non-identically distributed Rayleigh fading conditions. Our analytical-based numerical results are validated by some computer-based simulations. These results show that our proposed scheme leads to a considerable improvement in the performance of cooperative diversity systems.

Original languageEnglish
Article number4907461
Pages (from-to)1953-1961
Number of pages9
JournalIEEE Transactions on Wireless Communications
Issue number4
Publication statusPublished - 2009 Apr 1



  • Adaptive modulation
  • Amplify-and-forward
  • Cooperative diversity
  • Incremental relaying
  • Opportunistic relaying

ASJC Scopus subject areas

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

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