Performance analysis of two-way amplify and forward relaying with adaptive modulation over multiple relay network

Kyu Sung Hwang, Young Chai Ko, Mohamed Slim Alouini

    Research output: Contribution to journalArticlepeer-review

    35 Citations (Scopus)

    Abstract

    In this letter, we propose two-way amplify-and-forward relaying in conjunction with adaptive modulation in order to improve spectral efficiency of relayed communication systems while monitoring the required error performance. We also consider a multiple relay network where only the best relay node is utilized so that the diversity order increases while maintaining a low complexity of implementation as the number of relays increases. Based on the best relay selection criterion, we offer an upper bound on the signal-to-noise ratio to keep the performance analysis tractable. Our numerical examples show that the proposed system offers a considerable gain in spectral efficiency while satisfying the error rate requirements.

    Original languageEnglish
    Article number5648746
    Pages (from-to)402-406
    Number of pages5
    JournalIEEE Transactions on Communications
    Volume59
    Issue number2
    DOIs
    Publication statusPublished - 2011 Feb

    Bibliographical note

    Funding Information:
    This work was supported in part by the IT R&D program of MKE/IITA [2008-F-006-01, Wireless Local Area Communication Systems on Tera Hertz Band] and in part by the Qatar National Research Fund, QNRF (An initiative Qatar Foundation). Digital Object Identifier 10.1109/TCOMM.2010.111710.090617

    Keywords

    • Two-way relaying
    • amplify-and-forward relaying
    • best relay selection and adaptive modulation

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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