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    Dual-hop amplify-and-forward cooperative relaying in the presence of Tx and Rx in-phase and quadrature-phase imbalance

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    Type
    Article
    Authors
    Qi, Jian
    Alouini, Mohamed-Slim cc
    Aissa, Sonia
    KAUST Department
    Communication Theory Lab
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Electrical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2014-02-13
    Permanent link to this record
    http://hdl.handle.net/10754/575592
    
    Metadata
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    Abstract
    In this study, dual-hop channel state information-assisted amplify-and-forward (AF) cooperative systems in the presence of in-phase and quadrature-phase (I/Q) imbalance, which refers to the mismatch between components in the I and Q branches, are investigated. First, the authors analyse the performance of the considered AF cooperative protocol without compensation for the I/Q imbalance as the benchmark. Then, a compensation algorithm for the I/Q imbalance is proposed, which makes use of the received signals at the destination, from the source and the relay nodes, together with their conjugations to detect the transmitted signal. Moreover, the authors study the considered AF cooperative system implemented with the opportunistic relay selection and the proposed compensation mechanism for the I/Q imbalance. The performance of the AF cooperative system under study is evaluated in terms of average symbol error probability, which is derived by considering transmission in a Rayleigh fading environment. Numerical results are provided and show that the proposed compensation algorithm can efficiently mitigate the effect of the I/Q imbalance. On the other hand, it is observed that the AF cooperative system with opportunistic relay selection acquires a performance gain beyond that without relay selection.
    Citation
    Qi, J., Alouini, M.-S., & Aissa, S. (2014). Dual-hop amplify-and-forward cooperative relaying in the presence of Tx and Rx in-phase and quadrature-phase imbalance. IET Communications, 8(3), 287–298. doi:10.1049/iet-com.2013.0287
    Publisher
    Institution of Engineering and Technology (IET)
    Journal
    IET Communications
    DOI
    10.1049/iet-com.2013.0287
    ae974a485f413a2113503eed53cd6c53
    10.1049/iet-com.2013.0287
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Electrical and Computer Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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