Multiuser two-way relaying for interference limited systems

Min Chen, Aylin Yener

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

    55 Scopus citations


    We investigate multiuser two-way relaying strategies for interference limited systems where multiple pairs of users exchange information with their partners via an intermediate relay node in a two-phase communication scenario. To take advantage of the bidirectional communication structure, we propose that each pair of users share a common spreading signature instead of using distinct signatures as in a traditional CDMA setting. We design the jointly demodulate-and-XOR forward (JD-XOR-F) relaying scheme and derive the decision rule which enables the relay to generate the XORed symbol upon reception of the superposition of user symbols. When the relay has limited computational capability, amplify-and-forward relaying can be applied instead. We evaluate the BER performance for the proposed relaying schemes and show that they significantly outperform the traditional "one-way" CDMA systems.

    Original languageEnglish (US)
    Title of host publicationICC 2008 - IEEE International Conference on Communications, Proceedings
    Number of pages5
    StatePublished - 2008
    EventIEEE International Conference on Communications, ICC 2008 - Beijing, China
    Duration: May 19 2008May 23 2008

    Publication series

    NameIEEE International Conference on Communications
    ISSN (Print)0536-1486


    OtherIEEE International Conference on Communications, ICC 2008

    All Science Journal Classification (ASJC) codes

    • Computer Networks and Communications
    • Electrical and Electronic Engineering


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