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    Protocol Design and Performance Analysis of Multiuser Mixed RF and Hybrid FSO/RF Relaying With Buffers

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    Type
    Article
    Authors
    Al-Eryani, Yasser F. cc
    Salhab, Anas cc
    Zummo, Salam A.
    Alouini, Mohamed-Slim cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    KAUST Grant Number
    KAUST004
    Date
    2018-03-08
    Online Publication Date
    2018-03-08
    Print Publication Date
    2018-04-01
    Permanent link to this record
    http://hdl.handle.net/10754/627860
    
    Metadata
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    Abstract
    In this paper, a multiuser mixed radio frequency (RF) and hybrid free-space optical (FSO)/RF system is considered, where multiple mobile users transmit their data to an intermediate decode-and-forward relay node through RF links using a virtual multiple-input multipleoutput (MIMO) system, and the relay node forwards the multiplexed data of all users through a FSO link that is supported by a RF MIMO backup system to the destination. The relay node is equipped with a buffer in the physical layer for temporal storage of the users' data until the best channel conditions at the relay-destination link aremet. For this communication setup, we first propose a transmission protocol that achieves a multiplexing gain through a virtual MIMO system. After that, we derive closed-form expressions for the end-to-end outage probability, asymptotic outage probability, average symbol error rate, and the ergodic capacity when considering the delay-tolerant (finite buffer size) scenario. The results show that buffering in the physical layer provides a significant enhancement to the system performance (outage, error rate, and ergodic capacity). It is also found that pointing error and severe weather turbulence conditions become more tolerable with the existence of the relay's buffer and RF backup link (in the second hop). In addition, the proposed virtual MIMO scheme shows a significant performance enhancement at a high number of receiving antennas, which introduces potential lowcomplexity diversity gain-based massive MIMO schemes.
    Citation
    Al-Eryani YF, Salhab AM, Zummo SA, Alouini M-S (2018) Protocol Design and Performance Analysis of Multiuser Mixed RF and Hybrid FSO/RF Relaying With Buffers. Journal of Optical Communications and Networking 10: 309. Available: http://dx.doi.org/10.1364/JOCN.10.000309.
    Sponsors
    This work was funded by the National Plan for Science, Technology, and Innovation (Maarifah)-King Abdulaziz City for Science and Technology through the Science and Technology Unit at King Fahd University of Petroleum and Minerals (KFUPM), KSA, under grant number 15-ELE4157-04. The work was also supported by the Deanship of Scientific Research in KFUPM through grant number KAUST004. The authors would like also to acknowledge the KFUPM-KAUST research initiative that resulted from this research work.
    Publisher
    The Optical Society
    Journal
    Journal of Optical Communications and Networking
    DOI
    10.1364/JOCN.10.000309
    Additional Links
    https://www.osapublishing.org/jocn/abstract.cfm?uri=jocn-10-4-309
    ae974a485f413a2113503eed53cd6c53
    10.1364/JOCN.10.000309
    Scopus Count
    Collections
    Articles; Electrical Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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