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    Cross-layer designed adaptive modulation algorithm with packet combining and truncated ARQ over MIMO Nakagami fading channels

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    Type
    Article
    Authors
    Aniba, Ghassane
    Aissa, Sonia
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2011-04
    Permanent link to this record
    http://hdl.handle.net/10754/561745
    
    Metadata
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    Abstract
    This paper presents an optimal adaptive modulation (AM) algorithm designed using a cross-layer approach which combines truncated automatic repeat request (ARQ) protocol and packet combining. Transmissions are performed over multiple-input multiple-output (MIMO) Nakagami fading channels, and retransmitted packets are not necessarily modulated using the same modulation format as in the initial transmission. Compared to traditional approach, cross-layer design based on the coupling across the physical and link layers, has proven to yield better performance in wireless communications. However, there is a lack for the performance analysis and evaluation of such design when the ARQ protocol is used in conjunction with packet combining. Indeed, previous works addressed the link layer performance of AM with truncated ARQ but without packet combining. In addition, previously proposed AM algorithms are not optimal and can provide poor performance when packet combining is implemented. Herein, we first show that the packet loss rate (PLR) resulting from the combining of packets modulated with different constellations can be well approximated by an exponential function. This model is then used in the design of an optimal AM algorithm for systems employing packet combining, truncated ARQ and MIMO antenna configurations, considering transmission over Nakagami fading channels. Numerical results are provided for operation with or without packet combining, and show the enhanced performance and efficiency of the proposed algorithm in comparison with existing ones. © 2011 IEEE.
    Citation
    Aniba, G., & Aissa, S. (2011). Cross-Layer Designed Adaptive Modulation Algorithm with Packet Combining and Truncated ARQ over MIMO Nakagami Fading Channels. IEEE Transactions on Wireless Communications, 10(4), 1026–1031. doi:10.1109/twc.2011.030311.100487
    Sponsors
    This work was supported by a Discovery Grant from the Natural Sciences and Engineering Research Council (NSERC) of Canada.
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Transactions on Wireless Communications
    DOI
    10.1109/TWC.2011.030311.100487
    ae974a485f413a2113503eed53cd6c53
    10.1109/TWC.2011.030311.100487
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division

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