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    Secure Multiple-Antenna Block-Fading Wiretap Channels with Limited CSI Feedback

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    Type
    Article
    Authors
    Hyadi, Amal cc
    Rezki, Zouheir cc
    Alouini, Mohamed-Slim cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Date
    2017-07-18
    Online Publication Date
    2017-07-18
    Print Publication Date
    2017-10
    Permanent link to this record
    http://hdl.handle.net/10754/625262
    
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    Abstract
    In this paper, we investigate the ergodic secrecy capacity of a block-fading wiretap channel with limited channel knowledge at the transmitter. We consider that the legitimate receiver, the eavesdropper and the transmitter are equipped with multiple antennas and that the receiving nodes are aware of their respective channel matrices. The transmitter, on the other hand, is only provided by a B-bit feedback of the main channel state information. The feedback bits are sent by the legitimate receiver, at the beginning of each fading block, over an error-free public link with limited capacity. The statistics of the main and the eavesdropper channel state information are known at all nodes. Assuming an average transmit power constraint, we establish upper and lower bounds on the ergodic secrecy capacity. Then, we present a framework to design the optimal codebooks for feedback and transmission. In addition, we show that the proposed lower and upper bounds coincide asymptotically as the capacity of the feedback link becomes large, i.e. $B \rightarrow \infty$ ; hence, fully characterizing the ergodic secrecy capacity in this case. Besides, we analyze the asymptotic behavior of the presented secrecy rates, at high Signal-to-Noise Ratio (SNR), and evaluate the gap between the bounds.
    Citation
    Hyadi A, Rezki Z, Alouini M-S (2017) Secure Multiple-Antenna Block-Fading Wiretap Channels with Limited CSI Feedback. IEEE Transactions on Wireless Communications: 1–1. Available: http://dx.doi.org/10.1109/TWC.2017.2727043.
    Sponsors
    The research reported in this publication was supported by CRG 2 grant from the Office of Sponsored Research at King Abdullah University of Science and Technology (KAUST).
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Transactions on Wireless Communications
    DOI
    10.1109/TWC.2017.2727043
    Additional Links
    http://ieeexplore.ieee.org/document/7983457/
    ae974a485f413a2113503eed53cd6c53
    10.1109/TWC.2017.2727043
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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