Secure Beamforming for Simultaneous Wireless Information and Power Transfer in Wireless-Powered Full-Duplex Relay Networks
- Resource Type
- Conference
- Authors
- Li, Taoshen; Chen, Peipei; Wang, Zhe; Xiao, Nan
- Source
- 2019 14th International Conference on Computer Science & Education (ICCSE) Computer Science & Education (ICCSE), 2019 14th International Conference on. :360-365 Aug, 2019
- Subject
- Computing and Processing
Engineering Profession
Robotics and Control Systems
Relay networks (telecommunications)
Array signal processing
Wireless communication
Communication system security
Optimization
Receivers
energy harvesting
simultaneous wireless information and power transfer (SWIPT)
physical-layer (PHY) security
full-duplex relay
- Language
- ISSN
- 2473-9464
In this paper, we study secure beamforming for simultaneous wireless information and power transfer (SWIPT) in wireless-powered full-duplex (FD) relay networks. The relay assists transmission of confidential information, while simultaneously harvesting the energy with power switching scheme by the radio-frequency (RF) signals. We propose a joint amplify-and-forward beamforming (AB) and energy signal (AB-ES) with the receiver power splitting strategy (PS) scheme to maximize the secrecy rate under harvesting energy constraints. Since these constraints make the optimization problems become non-convex and hard to tackle. We propose a two-level optimization problem to solve this problem. The out part can be solved via the one-Dimensional search, and the inner part can be solved by semidefinite relaxation (SDR) technique. Simulation results show that the proposed scheme outperforms other schemes.