TY - JOUR
T1 - Security Analysis of Multi-Antenna NOMA Networks Under I/Q Imbalance
AU - Li, Xingwang
AU - Zhao, Mengle
AU - Zhang, Changsen
AU - Khan, Wali Ullah
AU - Wu, Jun
AU - Rabie, Khaled M.
AU - Kharel, Rupak
N1 - Funding Information:
Funding: This work was supported in part by the Henan Scientific and Technological Research Project under Grant 182102210307, in part by the Doctoral Scientific Funds of Henan Polytechnic University under Grant B2017-55, 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 Higher Education Institutions in Henan Province Grant 20A510007, and in part by the National Natural Science Foundation of China Grant 61601414 and 61801435).
Publisher Copyright:
© 2019 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2019/11/11
Y1 - 2019/11/11
N2 - This paper investigates the reliability and security performance of the downlink non-orthogonal multiple access (NOMA) networks over Nakagami-m fading channels, where the base station (BS) aims to communicate with multi-antenna NOMA users in the presence of a multi-antenna eavesdropper. To be more practical, a detrimental factor at both transmitter and receiver is considered, namely in-phase and quadrature-phase imbalance (IQI). To further improve the reliability and security of the considered networks, the selection combining (SC) algorithm at the receiver is taken into account. More specifically, the exact analytical expressions for the outage probability (OP) and the intercept probability (IP) are derived in closed-form. To obtain a better understanding of the influence for the IQI parameters on the system performance, the asymptotic behaviors for the outage probabilities (OPs) in the high signal-to-noise ratio (SNR) region are analyzed. Based on the asymptotic results, the diversity order of the considered system are obtained and discussed. The numerical results are presented to verify the validity of the theoretical analysis.
AB - This paper investigates the reliability and security performance of the downlink non-orthogonal multiple access (NOMA) networks over Nakagami-m fading channels, where the base station (BS) aims to communicate with multi-antenna NOMA users in the presence of a multi-antenna eavesdropper. To be more practical, a detrimental factor at both transmitter and receiver is considered, namely in-phase and quadrature-phase imbalance (IQI). To further improve the reliability and security of the considered networks, the selection combining (SC) algorithm at the receiver is taken into account. More specifically, the exact analytical expressions for the outage probability (OP) and the intercept probability (IP) are derived in closed-form. To obtain a better understanding of the influence for the IQI parameters on the system performance, the asymptotic behaviors for the outage probabilities (OPs) in the high signal-to-noise ratio (SNR) region are analyzed. Based on the asymptotic results, the diversity order of the considered system are obtained and discussed. The numerical results are presented to verify the validity of the theoretical analysis.
KW - In-phase and quadrature-phase imbalance
KW - Non-orthogonal multiple access
KW - Physical layer security
KW - Selection combining
UR - http://www.scopus.com/inward/record.url?scp=85074721028&partnerID=8YFLogxK
U2 - 10.3390/electronics8111327
DO - 10.3390/electronics8111327
M3 - Article
AN - SCOPUS:85074721028
VL - 8
JO - Electronics (Switzerland)
JF - Electronics (Switzerland)
SN - 0039-0895
IS - 11
M1 - 1327
ER -