TY - GEN
T1 - Optimal power allocation to increase secure energy efficiency in a two-way relay network
AU - Yao, Rugui
AU - Mekkawy, Tamer
AU - Xu, Fei
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/2
Y1 - 2017/7/2
N2 - In this paper, a cooperative secure transmission in a two-way relay network is investigated. Due to untrusted relay, physical layer security is adopted to secure the user's messages from relay interruption. Considering the secure sum rate and power consumption for the network, we formulate an optimal power allocation (OPA) problem for the transmission to maximize the secure energy efficiency (EE). To lower the complexity of the optimization solution, an approximation based on Taylor expansion is introduced to achieve near optimal secure EE with acceptable errors. Finally, the numerical results are presented to validate the correctness and efficiency of the proposed algorithm and solution. The relative error of secure EE is not greater than 6% in the worst case, and about 1% in most cases, which is acceptable.
AB - In this paper, a cooperative secure transmission in a two-way relay network is investigated. Due to untrusted relay, physical layer security is adopted to secure the user's messages from relay interruption. Considering the secure sum rate and power consumption for the network, we formulate an optimal power allocation (OPA) problem for the transmission to maximize the secure energy efficiency (EE). To lower the complexity of the optimization solution, an approximation based on Taylor expansion is introduced to achieve near optimal secure EE with acceptable errors. Finally, the numerical results are presented to validate the correctness and efficiency of the proposed algorithm and solution. The relative error of secure EE is not greater than 6% in the worst case, and about 1% in most cases, which is acceptable.
KW - Optimal power allocation
KW - Secure energy efficiency
KW - Two-way relay network
KW - Untrusted relay
UR - http://www.scopus.com/inward/record.url?scp=85045283144&partnerID=8YFLogxK
U2 - 10.1109/VTCFall.2017.8288198
DO - 10.1109/VTCFall.2017.8288198
M3 - 会议稿件
AN - SCOPUS:85045283144
T3 - IEEE Vehicular Technology Conference
SP - 1
EP - 5
BT - 2017 IEEE 86th Vehicular Technology Conference, VTC Fall 2017 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 86th IEEE Vehicular Technology Conference, VTC Fall 2017
Y2 - 24 September 2017 through 27 September 2017
ER -
