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    Some interesting properties for zero-forcing beamforming under per-antenna power constraints in rural areas

    Access Status
    Fulltext not available
    Authors
    Li, Bin
    Dam, Hai Huyen Heidi
    Cantoni, A.
    Teo, Kok Lay
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Li, B. and Dam, H.H.H. and Cantoni, A. and Teo, K.L. 2015. Some interesting properties for zero-forcing beamforming under per-antenna power constraints in rural areas. Journal of Global Optimization. 62 (4): pp. 877-886.
    Source Title
    Journal of Global Optimization
    DOI
    10.1007/s10898-014-0237-4
    ISSN
    0925-5001
    School
    Department of Mathematics and Statistics
    URI
    http://hdl.handle.net/20.500.11937/61362
    Collection
    • Curtin Research Publications
    Abstract

    Providing broadband services in the rural area is a challenging work. Multi-user multiple-input multiple-output (MU-MIMO) systems can be applied to increase spectral efficiency. One of the most commonly used method in MU-MIMO broadcast channel is zero-forcing beamforming (ZFBF) since it provides a good trade off between complexity and performance. In this paper, we consider the ZFBF under the per-antenna power constraints. Particularly, a deterministic line-of-sight modeling of the downlink channels is adopted. To reduce the computational complexity, we consider the problem in which all the equality constraints are eliminated. By examining the KKT optimality conditions and the properties of the channel, some interesting properties are revealed.

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