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    On Delay-limited Average Rate of HARQ-based Predictor Antenna Systems

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    Type
    Preprint
    Authors
    Guo, Hao
    Makki, Behrooz
    Alouini, Mohamed-Slim cc
    Svensson, Tommy
    KAUST Department
    Communication Theory Lab
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Date
    2020-04-03
    Permanent link to this record
    http://hdl.handle.net/10754/662523
    
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    Abstract
    Predictor antenna (PA) system is referred to as a system with two sets of antennas on the roof of a vehicle, where the PAs positioned in the front of the vehicle are used to predict the channel state observed by the receive antennas (RAs) that are aligned behind the PAs. In this work, we study the effect of spatial mismatch on the accuracy of channel state information estimation, and analyze the delay-constrained average rate of hybrid automatic repeat request (HARQ)-based PA systems. We consider variable-length incremental redundancy (INR) HARQ protocols, and derive a closed-form expression for the maximum average rate subject to a maximum delay constraint. Also, we study the effect of different parameters such as the vehicle speed, the antenna distance and the rate allocation on the system performance. The results indicate that, compared to the open-loop case, the delay-limited average rate is considerably improved with the proposed PA and HARQ-based scheme.
    Publisher
    arXiv
    arXiv
    2004.01423
    Additional Links
    https://arxiv.org/pdf/2004.01423
    Collections
    Preprints; Electrical Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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