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    Asymptotic Analysis of RZF Over Double Scattering Channels With MMSE Estimation

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    Type
    Article
    Authors
    Nadeem, Qurrat-Ul-Ain cc
    Kammoun, Abla cc
    Debbah, Mérouane
    Alouini, Mohamed-Slim cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering
    Electrical Engineering Program
    Date
    2019-03-19
    Permanent link to this record
    http://hdl.handle.net/10754/655911
    
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    Abstract
    This paper studies the ergodic rate performance of regularized zero-forcing (RZF) precoding in the downlink of a multi-user multiple-input single-output (MISO) system, where the channel between the base station (BS) and each user is modeled by the double scattering model. This non-Gaussian channel model is a function of both the antenna correlation and the structure of scattering in the propagation environment. This paper makes the preliminary contribution of deriving the minimum-mean-square-error (MMSE) channel estimate for this model. Then under the assumption that the users are divided into groups of common correlation matrices, this paper derives deterministic approximations of the signal-to-interference-plus-noise ratio (SINR) and the ergodic rate, which are almost surely tight in the limit that the number of BS antennas, the number of users, and the number of scatterers in each group grow infinitely large. The derived results are expressed in a closed-form for the special case of multi-keyhole channels. The simulation results confirm the close match provided by the asymptotic analysis for moderate system dimensions. We show that the maximum number of users that can be supported simultaneously, while realizing large-scale MIMO gains, is equal to the number of scatterers.
    Citation
    Nadeem, Q.-U.-A., Kammoun, A., Debbah, M., & Alouini, M.-S. (2019). Asymptotic Analysis of RZF Over Double Scattering Channels With MMSE Estimation. IEEE Transactions on Wireless Communications, 18(5), 2509–2526. doi:10.1109/twc.2019.2904495
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Transactions on Wireless Communications
    DOI
    10.1109/TWC.2019.2904495
    arXiv
    1904.12197
    Additional Links
    https://ieeexplore.ieee.org/document/8671514/
    https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8671514
    http://arxiv.org/pdf/1904.12197
    ae974a485f413a2113503eed53cd6c53
    10.1109/TWC.2019.2904495
    Scopus Count
    Collections
    Articles; Electrical Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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