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Secrecy throughput maximization for full-duplex wireless powered IOT networks under fairness constraints
, Article IEEE Internet of Things Journal ; Volume 6, Issue 4 , 2019 , Pages 6964-6976 ; 23274662 (ISSN) ; Sun, S ; Kang, X ; Guan, Y. L ; Pakravan, M. R ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2019
Abstract
In this paper, we study the secrecy throughput of a full-duplex wireless powered communication network (WPCN) for Internet of Things (IoT). The WPCN consists of a full-duplex multiantenna base station (BS) and a number of sensor nodes. The BS transmits energy all the time, and each node harvests energy prior to its transmission time slot. The nodes sequentially transmit their confidential information to the BS, and the other nodes are considered as potential eavesdroppers. We first aim to optimize the sum secrecy throughput of the nodes. The optimization variables are the duration of the time slots and the BS beamforming vectors in different time slots. The optimization problem is shown to...