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    AF MIMO Relay Systems with Wireless Powered Relay Node and Direct Link

    Access Status
    Fulltext not available
    Authors
    Li, B.
    Rong, Yue
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Li, B. and Rong, Y. 2018. AF MIMO Relay Systems with Wireless Powered Relay Node and Direct Link. IEEE Transactions on Communications. 66 (4): pp. 1508 - 1519.
    Source Title
    IEEE Transactions on Communications
    DOI
    10.1109/TCOMM.2017.2788006
    ISSN
    0090-6778
    School
    Department of Mathematics and Statistics
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP140102131
    URI
    http://hdl.handle.net/20.500.11937/62127
    Collection
    • Curtin Research Publications
    Abstract

    IEEE A two-hop amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay system with direct link is considered in this paper. The relay node has no self-power supply and relies on harvesting the radio frequency energy transferred from the source node to forward information from source to destination. In particular, we consider the time switching (TS) protocol between wireless information and energy transfer. We study the joint optimization of the source and relay precoding matrices and the TS factor to maximize the achievable source-destination rate when a single data stream is transmitted from the source node. The optimal structure of the source and relay precoding matrices is derived, which reduces the original problem to a simpler optimization problem. The simplified problem is then solved efficiently by a two-step method. Numerical simulations show that the proposed algorithm yields a higher rate and better rate-energy tradeoff than suboptimal approaches.

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