University of Oulu

D. P. Moya Osorio, E. E. Benítez Olivo, H. Alves, J. C. S. Santos Filho and M. Latva-aho, "An Adaptive Transmission Scheme for Amplify-and-Forward Relaying Networks," in IEEE Transactions on Communications, vol. 65, no. 1, pp. 66-78, Jan. 2017. doi: 10.1109/TCOMM.2016.2616136 URL:

An adaptive transmission scheme for amplify-and-forward relaying networks

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Author: Moya Osorio, Diana Pamela1; Benítez Olivo, Edgar Eduardo2; Alves, Hirley3;
Organizations: 1Department of Electrical Engineering, Center of Exact Sciences and Technology, Federal University of São Carlos, São Carlos, Brazil
2São Paulo State University (UNESP), São João da Boa Vista, Brazil
3Department of Communications Engineering, University of Oulu, Oulu, Finland
4Department of Communications, School of Electrical and Computer Engineering, University of Campinas, Campinas, Brazil
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.4 MB)
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Language: English
Published: IEEE, 2016
Publish Date: 2017-01-30


In this paper, an adaptive scheme for amplify-and-forward relaying networks is proposed, which selects a certain transmission mode for each communication process. Depending on the instantaneous channel conditions, one of the following modes is selected: direct transmission with no cooperation, cooperative transmission with half-duplex relaying and maximal-ratio combining at the destination, or cooperative transmission with full-duplex relaying and maximal-ratio combining at the destination. A three-node network is considered, containing a single-antenna source, a two-antenna relay that is able to implement full-duplex communication, and a single-antenna destination. Energy normalization per block is assumed, so that in those modes using cooperation, the system’s transmission power is shared between source and relay. The performance analysis is provided in terms of outage probability and energy efficiency. We derive a tight approximate expression in closed form for the outage probability and an approximate expression in integral form for the mean energy consumption. The results show that our scheme outperforms all of transmission modes separately in terms of outage probability, while being more energy efficient than the cooperative transmission modes. In addition, the asymptotic analysis proves that the proposed scheme achieves full diversity order equal to 2, thus outperforming those schemes with direct transmission or full-duplex cooperation only.
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Series: IEEE transactions on communications
ISSN: 0090-6778
ISSN-E: 1558-0857
ISSN-L: 0090-6778
Volume: 65
Issue: 1
Pages: 66 - 78
DOI: 10.1109/TCOMM.2016.2616136
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported in part by the Brazilian Ministry of Educa- tion (CAPES), the Finnish Centre for International Mobility (CIMO), and the Tekes and Academy of Finland (AKA).
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