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    Mobile relays for enhanced broadband connectivity in high speed train systems

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    Type
    Article
    Authors
    Yaacoub, Elias E.
    Atat, Rachad
    Alsharoa, Ahmad M.
    Alouini, Mohamed-Slim cc
    KAUST Department
    Electrical Engineering Program
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Communication Theory Lab
    Date
    2014-09
    Permanent link to this record
    http://hdl.handle.net/10754/563729
    
    Metadata
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    Abstract
    With the introduction of wireless modems and smart phones, the passenger transport industry is witnessing a high demand to ensure not only the safety of the trains, but also to provide users with Internet access all the time inside the train. When the Mobile Terminal (MT) communicates directly with the Base Station (BS), it will experience a severe degradation in the Quality of Service due to the path loss and shadowing effects as the wireless signal is traveling through the train. In this paper, we study the performance in the case of relays placed on top of each train car. In the proposed approach, these relays communicate with the cellular BS on one hand, and with the MTs inside the train cars on the other hand, using the Long Term Evolution (LTE) cellular technology. A low complexity heuristic LTE radio resource management approach is proposed and compared to the Hungarian algorithm, both in the presence and absence of the relays. The presence of the relays is shown to lead to significant enhancements in the effective data rates of the MTs. In addition, the proposed resource management approach is shown to reach a performance close to the optimal Hungarian algorithm. © 2014 Elsevier B.V.
    Citation
    Yaacoub, E., Atat, R., Alsharoa, A., & Alouini, M.-S. (2014). Mobile relays for enhanced broadband connectivity in high speed train systems. Physical Communication, 12, 105–115. doi:10.1016/j.phycom.2014.06.001
    Publisher
    Elsevier BV
    Journal
    Physical Communication
    DOI
    10.1016/j.phycom.2014.06.001
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.phycom.2014.06.001
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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