TY - JOUR
T1 - Secure Primary Transmission Assisted by a Secondary Full-Duplex NOMA Relay
AU - Chen, Bingcai
AU - Chen, Yu
AU - Chen, Yunfei
AU - Cao, Yang
AU - Ding, Zhiguo
AU - Zhao, Nan
AU - Wang, Xianbin
N1 - Funding Information:
Manuscript received November 3, 2018; revised January 24, 2019, March 20, 2019, and May 9, 2019; accepted May 26, 2019. Date of publication June 4, 2019; date of current version July 16, 2019. The work of B. Chen was supported in part by the National Natural Science Foundation of China (NSFC) under Grants 61771089 and 61871065 and in part by the Open Research Fund of Key Laboratory of Data Security, Xinjiang Normal University under Grant XJNUSYS102018B01. The work of Z. Ding was supported in part by the UK EPSRC under Grant EP/L025272/2, in part by NSFC under Grants 61728101, 690750, and H2020-MSCA-RISE-2015. The review of this paper was coordinated by Dr. S. Majhi. (Corresponding author: Nan Zhao.) B. Chen is with the Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China, and with the School of Information Science and Technology, Qingdao University of Science and Technology, Qingdao 266000, China, and also with the School of Computer Science and Technology, Xinjiang Normal University, Urumqi 830054, China (e-mail: [email protected]).
Publisher Copyright:
© 2019 IEEE.
PY - 2019/7
Y1 - 2019/7
N2 - In this paper, secure primary transmission is proposed by using a multi-antenna secondary full-duplex non-orthogonal multiple access (NOMA) relay in cognitive radio (CR) networks. First, the primary signal is transmitted from the primary transmitter to the relay. Artificial noise is generated by using part of the antennas at the relay to disrupt eavesdropping, without affecting the primary transmission. Then, superimposed signals are transmitted from the relay to the primary receiver and secondary receivers via NOMA. The primary security is guaranteed by the modified decoding order and beamforming optimization, which is converted to convex and solved by an iterative algorithm. Simulation results are presented to show the effectiveness of the proposed scheme in guaranteeing the primary security in CR networks.
AB - In this paper, secure primary transmission is proposed by using a multi-antenna secondary full-duplex non-orthogonal multiple access (NOMA) relay in cognitive radio (CR) networks. First, the primary signal is transmitted from the primary transmitter to the relay. Artificial noise is generated by using part of the antennas at the relay to disrupt eavesdropping, without affecting the primary transmission. Then, superimposed signals are transmitted from the relay to the primary receiver and secondary receivers via NOMA. The primary security is guaranteed by the modified decoding order and beamforming optimization, which is converted to convex and solved by an iterative algorithm. Simulation results are presented to show the effectiveness of the proposed scheme in guaranteeing the primary security in CR networks.
KW - Artificial noise
KW - cognitive radio
KW - full-duplex relay
KW - non-orthogonal multiple access
KW - physical layer security
UR - http://www.scopus.com/inward/record.url?scp=85069542012&partnerID=8YFLogxK
U2 - 10.1109/TVT.2019.2919873
DO - 10.1109/TVT.2019.2919873
M3 - Article
AN - SCOPUS:85069542012
SN - 0018-9545
VL - 68
SP - 7214
EP - 7219
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 7
M1 - 8730524
ER -