Interference management for multiuser two-way relaying

Min Chen, Aylin Yener

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

    34 Scopus citations

    Abstract

    We consider a multiuser two-way relay network where multiple pairs of users communicate with their pre-assigned partners, using a common intermediate relay node, in a twophase communication scenario. In this system, a pair of partners transmit to the relay sharing a common spreading signature in the first phase, and the relay broadcasts an estimate of the XORed symbol for each user pair in the second phase employing the relaying scheme termed jointly demodulate-and-XOR forward (JD-XOR-F) in [1]. We investigate the joint power control and receiver optimization problem for this multiuser twoway relay system with JD-XOR-F relaying. We show that the total power optimization problem decouples into two subproblems, one for each phase. We construct the distributed power control and receiver updates in each phase which converge to the corresponding unique optimum. Simulation results are presented to demonstrate the significant power savings of the multiuser twoway relay system with the proposed iterative power control and receiver optimization algorithms, as compared to the designs with a "one-way" communication perspective.

    Original languageEnglish (US)
    Title of host publicationCISS 2008, The 42nd Annual Conference on Information Sciences and Systems
    Pages246-251
    Number of pages6
    DOIs
    StatePublished - Sep 22 2008
    EventCISS 2008, 42nd Annual Conference on Information Sciences and Systems - Princeton, NJ, United States
    Duration: Mar 19 2008Mar 21 2008

    Publication series

    NameCISS 2008, The 42nd Annual Conference on Information Sciences and Systems

    Other

    OtherCISS 2008, 42nd Annual Conference on Information Sciences and Systems
    CountryUnited States
    CityPrinceton, NJ
    Period3/19/083/21/08

    All Science Journal Classification (ASJC) codes

    • Computer Science Applications
    • Information Systems
    • Control and Systems Engineering

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