Improved achievable rates for the Gaussian interference relay channel

Ye Tian, Aylin Yener

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

    6 Scopus citations

    Abstract

    We consider the Gaussian interference channel with an intermediate relay. The known achievable schemes for this channel are based on decode-and-forward (DF) relaying, whose performance depends on the signal-to-noise (SNR) ratio of the received signal at the relay. Consequently, when the source-torelay (S - R) links are weak, the resulting achievable rates have room for improvement. In this work, we design achievable schemes that provide this improvement. First, we consider compress-and-forward (CF) relaying to overcome the weakness of the DF schemes. Second, we consider employing structured codes and observe that when the signal strength from the direct link is subject to severe attenuation, using nested lattice codes yields higher rates than both the DF and CF schemes. Numerical results are presented to demonstrate the performance of different achievable schemes with the Potent Relay Outerbound derived in our previous work.

    Original languageEnglish (US)
    Title of host publication2010 IEEE International Conference on Communications, ICC 2010
    DOIs
    StatePublished - Aug 13 2010
    Event2010 IEEE International Conference on Communications, ICC 2010 - Cape Town, South Africa
    Duration: May 23 2010May 27 2010

    Publication series

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

    Other

    Other2010 IEEE International Conference on Communications, ICC 2010
    Country/TerritorySouth Africa
    CityCape Town
    Period5/23/105/27/10

    All Science Journal Classification (ASJC) codes

    • Computer Networks and Communications
    • Electrical and Electronic Engineering

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