Khandaker, MRA;
Wong, K-K;
(2015)
Robust Secrecy Beamforming With Energy-Harvesting Eavesdroppers.
IEEE Wireless Communications Letters
, 4
(1)
10 - 13.
10.1109/LWC.2014.2358586.
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Abstract
This letter considers simultaneous wireless information and power transfer (SWIPT) in multiple-input-single-output downlink systems in which a multiantenna transmitter sends a secret message to a single-antenna information receiver (IR) with multiple single-antenna energy receivers (ERs). We aim to maximize the harvested energy by the ERs while maintaining the signal-to-interference-and-noise ratio (SINR) threshold at the IR and keeping the message secure from possible eavesdropping by the ERs by suppressing their SINRs. Both scenarios of perfect and imperfect channel state information at the transmitter are studied. Using semidefinite relaxation techniques, we show that there always exists a rank-one optimal solution for the IR, i.e., transmit beamforming is optimal for the IR.
| Type: | Article |
|---|---|
| Title: | Robust Secrecy Beamforming With Energy-Harvesting Eavesdroppers |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/LWC.2014.2358586 |
| Publisher version: | http://dx.doi.org/10.1109/LWC.2014.2358586 |
| Additional information: | This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/ |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1457721 |
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