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    Multi-hop Relaying: An End-to-End Delay Analysis

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    relay_channel.pdf
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    Type
    Article
    Authors
    Chaaban, Anas cc
    Sezgin, Aydin
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Date
    2015-12-01
    Online Publication Date
    2015-12-01
    Print Publication Date
    2016-04
    Permanent link to this record
    http://hdl.handle.net/10754/583126
    
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    Abstract
    The impact of multi-hopping schemes on the communication latency in a relay channel is studied. The main aim is to characterize conditions under which such schemes decrease the communication latency given a reliability requirement. Both decode-forward (DF) and amplify-forward (AF) with block coding are considered, and are compared with the point-to-point (P2P) scheme which ignores the relay. Latency expressions for the three schemes are derived, and conditions under which DF and AF reduce latency are obtained for high signal-to-noise ratio (SNR). Interestingly, these conditions are more strict when compared to the conditions under which the same multi-hopping schemes achieve higher long-term (information-theoretic) rates than P2P. It turns out that the relation between the sourcedestination SNR and the harmonic mean of the SNR’s of the channels to and from the relay dictates whether multi-hopping reduces latency or not.
    Citation
    Multi-hop Relaying: An End-to-End Delay Analysis 2015:1 IEEE Transactions on Wireless Communications
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Transactions on Wireless Communications
    DOI
    10.1109/TWC.2015.2504528
    Additional Links
    http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7342977
    ae974a485f413a2113503eed53cd6c53
    10.1109/TWC.2015.2504528
    Scopus Count
    Collections
    Articles; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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