IDEAS home Printed from https://ideas.repec.org/a/ids/ijscom/v3y2017i1p1-12.html
   My bibliography  Save this article

MIMO wireless power transfer based on magnetic beamforming

Author

Listed:
  • Wenhao Qiao
  • Zhigang Wen

Abstract

Wireless power transfer (WPT) promises to provide sufficient power for multiple users. However, majority of prior works focused on systems with single transmitter or receiver. In this paper, we base our MIMO wireless power transfer MIMO-WPT) system with N transmitters and two receivers on magnetic beamforming which is similar to that in a MIMO system of wireless communication. From the perspective of signal processing and practical application, we formulate an optimisation problem to minimise total power consumed by all transmitters, subject to the minimum power required by both receivers. Furthermore, we demonstrate that the semi-definite relaxation (SDR) of such a quadratically constrained quadratic programming (QCQP) problem is tight, thus can be solved by standard interior-point algorithm. Simulation results show that compared with the uncoordinated baseline scheme of identical current allocation, our MIMO-WPT system has boost power efficiency prominently. In the end, we consider a more general model with N transmitters and M receivers, and the characteristic of the optimal solution is deduced.

Suggested Citation

  • Wenhao Qiao & Zhigang Wen, 2017. "MIMO wireless power transfer based on magnetic beamforming," International Journal of Service and Computing Oriented Manufacturing, Inderscience Enterprises Ltd, vol. 3(1), pages 1-12.
    • Handle: RePEc:ids:ijscom:v:3:y:2017:i:1:p:1-12
    as

    Download full text from publisher

    File URL: http://www.inderscience.com/link.php?id=87941
    Download Restriction: Access to full text is restricted to subscribers.
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ids:ijscom:v:3:y:2017:i:1:p:1-12. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sarah Parker (email available below). General contact details of provider: http://www.inderscience.com/browse/index.php?journalID=376 .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.