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    Transceiver optimization for af MIMO relay systems with wireless powered relay nodes

    Access Status
    Fulltext not available
    Authors
    Li, Bin
    Rong, Yue
    Date
    2018
    Type
    Conference Paper
    
    Metadata
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    Citation
    Li, B. and Rong, Y. 2018. Transceiver optimization for af MIMO relay systems with wireless powered relay nodes, pp. 1-6.
    Source Title
    2017 23rd Asia-Pacific Conference on Communications: Bridging the Metropolitan and the Remote, APCC 2017
    DOI
    10.23919/APCC.2017.8304062
    ISBN
    9781740523905
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP140102131
    URI
    http://hdl.handle.net/20.500.11937/73023
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 University of Western Australia. In this paper, we study a two-hop amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay system, where 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. We apply the time switching (TS) protocol between wireless information and energy transfer. As a novel contribution of this paper, we propose a more general energy consumption constraint at the source node during the information and energy transfer, which includes the constant power constraints used in existing works as special cases. We study the joint optimization of the source precoding matrices, the relay amplifying matrix, and the TS factor to maximize the source-destination mutual information (MI). The optimal structure of the source and relay matrices is derived, which reduces the original transceiver optimization problem to a simpler power allocation problem. Numerical simulations show that the proposed algorithm yield higher system MI and better rate-energy tradeoff than an existing approach.

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