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    On the outage capacity of the block fading channel at low-power regime

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    Type
    Conference Paper
    Authors
    Rezki, Zouheir cc
    Alouini, Mohamed-Slim cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Communication Theory Lab
    Date
    2014-06
    Permanent link to this record
    http://hdl.handle.net/10754/564931
    
    Metadata
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    Abstract
    Outage performance of the M-block fading with additive white Gaussian noise (BF-AWGN) is investigated at low-power regime. We consider delay-constrained constant-rate communications with perfect channel state information (CSI) at both the transmitter and the receiver (CSI-TR), under a short-term power constraint. We show that selection diversity that allocates all the power to the strongest block is asymptotically optimal. Then, we provide a simple characterization of the outage probability in the regime of interest. We quantify the reward due to CSI-TR over the constant-rate constant-power scheme and show that this reward increases with the delay constraint. For instance, for Rayleigh fading, we find that a power gain up to 4.3 dB is achievable. © 2014 IEEE.
    Publisher
    Institute of Electrical & Electronics Engineers (IEEE)
    Journal
    2014 IEEE International Symposium on Information Theory
    Conference/Event name
    2014 IEEE International Symposium on Information Theory, ISIT 2014
    ISBN
    9781479951864
    ISSN
    21578095
    DOI
    10.1109/ISIT.2014.6875363
    ae974a485f413a2113503eed53cd6c53
    10.1109/ISIT.2014.6875363
    Scopus Count
    Collections
    Conference Papers; Electrical Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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