TY - JOUR
T1 - Secure 5G Wireless Communications: A Joint Relay Selection and Wireless Power Transfer Approach
AU - Nguyen, Nam-Phong
AU - Duong, Trung Q.
AU - Ngo, Hien Quoc
AU - Hadzi-Velkov, Zoran
AU - Shu, Lei
PY - 2016/7/21
Y1 - 2016/7/21
N2 - In this paper, we investigate the secrecy performance of an energy harvesting relay system,
where a legitimate source communicates with a legitimate destination via the assistance of multiple trusted
relays. In the considered system, the source and relays deploy the time-switching-based radio frequency
energy harvesting technique to harvest energy from a multi-antenna beacon. Different antenna selection and
relay selection schemes are applied to enhance the security of the system. Specifically, two relay selection
schemes based on the partial and full knowledge of channel state information, i.e., optimal relay selection
and partial relay selection, and two antenna selection schemes for harvesting energy at source and relays,
i.e., maximizing energy harvesting channel for the source and maximizing energy harvesting channel for the
selected relay, are proposed. The exact and asymptotic expressions of secrecy outage probability in these
schemes are derived. We demonstrate that applying relay selection approaches in the considered energy
harvesting system can enhance the security performance. In particular, optimal relay selection scheme
outperforms partial relay selection scheme and achieves full secrecy diversity order, regardless of energy
harvesting scenarios.
AB - In this paper, we investigate the secrecy performance of an energy harvesting relay system,
where a legitimate source communicates with a legitimate destination via the assistance of multiple trusted
relays. In the considered system, the source and relays deploy the time-switching-based radio frequency
energy harvesting technique to harvest energy from a multi-antenna beacon. Different antenna selection and
relay selection schemes are applied to enhance the security of the system. Specifically, two relay selection
schemes based on the partial and full knowledge of channel state information, i.e., optimal relay selection
and partial relay selection, and two antenna selection schemes for harvesting energy at source and relays,
i.e., maximizing energy harvesting channel for the source and maximizing energy harvesting channel for the
selected relay, are proposed. The exact and asymptotic expressions of secrecy outage probability in these
schemes are derived. We demonstrate that applying relay selection approaches in the considered energy
harvesting system can enhance the security performance. In particular, optimal relay selection scheme
outperforms partial relay selection scheme and achieves full secrecy diversity order, regardless of energy
harvesting scenarios.
U2 - 10.1109/ACCESS.2016.2582719
DO - 10.1109/ACCESS.2016.2582719
M3 - Article
VL - 4
SP - 3349
EP - 3359
JO - IEEE Access
JF - IEEE Access
SN - 2169-3536
ER -