Abstract
In this paper, we investigate the secrecy throughput for a full-duplex wireless powered communication network. A multi-antenna base station (BS) transmits energy towards nodes all the time and each node harvests energy prior to its transmission time slot. Nodes sequentially transmit their confidential information to the BS in presence of other nodes which are considered as potential eavesdroppers. We derive the secrecy rate and formulate the sum secrecy throughput optimization of all nodes. The optimization variables are the time slot duration and the BS beamforming during different transmission phases. The problem is non-convex and non-trivial. We propose a suboptimal approach in which the BS focuses its beamforming to blind the potential eavesdroppers (other nodes) during the information transmission phase, with which we then obtain the optimum beamforming in each time slot and its duration. We compare our algorithm with uniform time slot and uniform beamforming in different settings and demonstrate its superior performance.
| Original language | English |
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| Title of host publication | 2019 IEEE International Conference on Communications, ICC 2019 - Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781538680889 |
| DOIs | |
| Publication status | Published - May 2019 |
| Externally published | Yes |
| Event | 2019 IEEE International Conference on Communications, ICC 2019 - Shanghai, China Duration: May 20 2019 → May 24 2019 |
Publication series
| Name | IEEE International Conference on Communications |
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| Volume | 2019-May |
| ISSN (Print) | 1550-3607 |
Conference
| Conference | 2019 IEEE International Conference on Communications, ICC 2019 |
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| Country/Territory | China |
| City | Shanghai |
| Period | 5/20/19 → 5/24/19 |
Bibliographical note
Publisher Copyright:© 2019 IEEE.
ASJC Scopus Subject Areas
- Computer Networks and Communications
- Electrical and Electronic Engineering