TY - JOUR
T1 - Secrecy Analysis of Ambient Backscatter NOMA Systems under I/Q Imbalance
AU - Li, Xingwang
AU - Zhao, Mengle
AU - Liu, Yuanwei
AU - Li, Lihua
AU - Ding, Zhiguo
AU - Nallanathan, Arumugam
N1 - Funding Information:
Manuscript received March 4, 2020; revised June 12, 2020 and June 26, 2020; accepted June 28, 2020. Date of publication July 2, 2020; date of current version October 22, 2020. This work was supported in part by the Henan Scientific and Technological Research Project under Grants 182102210307 and 202102210122, in part by the Fundamental Research Funds for the Universities of Henan Province under Grant NSFRF180309, in part by the Outstanding Youth Science Foundation of Henan Polytechnic University under Grant J2019-4, in part by the Key Scientific Research Projects of Colleges and Universities in Henan Province under Grant 20A510007, and in party by the NSFC of China under Grant 61601414. The review of this article was coordinated by Prof. Khoa Le. (Corresponding author: Xingwang Li.) Xingwang Li and Mengle Zhao are with the School of Physics and Electronic Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China (e-mail: [email protected]; [email protected]).
Funding Information:
This work was supported in part by the Henan Scientific and Technological Research Project under Grants 182102210307 and 202102210122, in part by the Fundamental Research Funds for the Universities of Henan Province underGrant NSFRF180309, in part by theOutstandingYouth Science Foundation of Henan Polytechnic University under Grant J2019-4, in part by the Key Scientific Research Projects of Colleges and Universities in Henan Province under Grant 20A510007, and in party by the NSFC of China under Grant 61601414.
Publisher Copyright:
© 1967-2012 IEEE.
PY - 2020/10
Y1 - 2020/10
N2 - In this correspondence, we investigate the reliability and the security of the ambient backscatter (AmBC) non-orthogonal multiple access (NOMA) systems, where the source aims to communicate with two NOMA users in the presence of an eavesdropper. To be practical, we assume that all nodes and backscatter device (BD) suffer from in-phase and quadrature-phase imbalance (IQI). More specifically, some analytical expressions for the outage probability (OP) and the intercept probability (IP) are derived. In order to obtain more insights, the asymptotic behaviors for the OP in the high signal-to-noise ratio (SNR) regime are explored, and corresponding diversity orders are derived. Numerical results show that: 1) Although IQI reduces the reliability, it can enhance the security; 2) Compared with the orthogonal multiple access (OMA) systems, the considered AmBC NOMA systems can obtain better reliability when the SNR is lower; 3) There are error floors for the OP in the high SNR regime due to the reflection coefficient $\beta$; 4) There exists a trade-off between reliability and security.
AB - In this correspondence, we investigate the reliability and the security of the ambient backscatter (AmBC) non-orthogonal multiple access (NOMA) systems, where the source aims to communicate with two NOMA users in the presence of an eavesdropper. To be practical, we assume that all nodes and backscatter device (BD) suffer from in-phase and quadrature-phase imbalance (IQI). More specifically, some analytical expressions for the outage probability (OP) and the intercept probability (IP) are derived. In order to obtain more insights, the asymptotic behaviors for the OP in the high signal-to-noise ratio (SNR) regime are explored, and corresponding diversity orders are derived. Numerical results show that: 1) Although IQI reduces the reliability, it can enhance the security; 2) Compared with the orthogonal multiple access (OMA) systems, the considered AmBC NOMA systems can obtain better reliability when the SNR is lower; 3) There are error floors for the OP in the high SNR regime due to the reflection coefficient $\beta$; 4) There exists a trade-off between reliability and security.
KW - Ambient backscatter communication
KW - in-phase and quadrature-phase imbalance
KW - non-orthogonal multiple access
KW - physical layer security
UR - http://www.scopus.com/inward/record.url?scp=85092642775&partnerID=8YFLogxK
U2 - 10.1109/TVT.2020.3006478
DO - 10.1109/TVT.2020.3006478
M3 - Article
AN - SCOPUS:85092642775
SN - 0018-9545
VL - 69
SP - 12286
EP - 12290
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 10
M1 - 9131891
ER -