Optimal relay selection for decode-and-forward opportunistic relaying

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

In this paper, we consider the optimal relay selection policy for decode-and-forward opportunistic relaying systems under the assumption that the channel gain of the source-destination link is good-enough to produce some improvement in the end-to-end performance over the relay channels. The optimal relay selection policy shows that the conventional relay selection policy that appeared in the literature is suboptimal. We derive the exact expression for the end-to-end outage probability over Rayleigh fading channels. In addition, we look into the asymptotic high signal-to-noise ratio (SNR) regime, and characterize the diversity order and coding gain. Our findings reveal that the new optimal relay selection policy outperforms the suboptimal relay selection policy via coding gain while both policies have the same diversity order. We provide simulation results to verify the validity of our theoretical analysis.

Original languageEnglish
Title of host publication2013 1st International Conference on Communications, Signal Processing and Their Applications, ICCSPA 2013
DOIs
Publication statusPublished - 2013
Event2013 1st International Conference on Communications, Signal Processing and Their Applications, ICCSPA 2013 - Sharjah, United Arab Emirates
Duration: 12 Feb 201314 Feb 2013

Other

Other2013 1st International Conference on Communications, Signal Processing and Their Applications, ICCSPA 2013
CountryUnited Arab Emirates
CitySharjah
Period12/2/1314/2/13

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Keywords

  • decode-and-forward
  • Opportunistic relaying
  • outage probability
  • relay selection

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing

Cite this

Shaqfeh, M., Al-Qahtani, F., & Alnuweiri, H. (2013). Optimal relay selection for decode-and-forward opportunistic relaying. In 2013 1st International Conference on Communications, Signal Processing and Their Applications, ICCSPA 2013 [6487295] https://doi.org/10.1109/ICCSPA.2013.6487295