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In this letter, we consider a secrecy wireless powered communication network (WPCN), where an information source sends message to a legitimate destination with the energy harvested from a power source, while an eavesdropper intends to intercept the information. In such a secrecy WPCN, transmit power and transfer time at the power source, and spatial beam at the information source, are interrelated,...
In this paper, we address the problem of secrecy wireless information and power transfer (SWIPT) over interference channels, where an external eavesdropper is also interested in the transmitted message. Under a practical assumption that only imperfect eavesdropper channel state information (CSI) is available, our objective is to minimize the total transmit power while satisfying the constraints on...
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