Outage Performance of Decode-and-Forward in Two-Way Relaying with Outdated CSI

Amal Hyadi, Mustapha Benjillali, Mohamed-Slim Alouini

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


In this paper, we analyze the outage behavior of decode-and-forward relaying in the context of selective two-way cooperative systems. First, a new relay selection metric is proposed to take into consideration both transmission rates and instantaneous link conditions between cooperating nodes. Afterwards, the outage probability of the proposed system is derived for Nakagami-m fading channels in the case when perfect channel state information is available and then extended to the more realistic scenario where the available channel state information (CSI) is outdated due to fast fading. New expressions for the outage probability are obtained, and the impact of imperfect CSI on the performance is evaluated. Illustrative numerical results, Monte Carlo simulations, and comparisons with similar approaches are presented to assess the accuracy of our analytical derivations and confirm the performance gain of the proposed scheme.
Original languageEnglish (US)
Pages (from-to)5940-5947
Number of pages8
JournalIEEE Transactions on Vehicular Technology
Issue number12
StatePublished - Jan 7 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The work of M.-S. Alouini was supported by the Qatar National Research Fund (a member of Qatar Foundation) under NPRP Grant
NPRP 5-250-2-087.


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