TY - GEN
T1 - Securing NOMA by an Active RIS
T2 - 2023 IEEE/CIC International Conference on Communications in China, ICCC 2023
AU - Ji, Mengyi
AU - Chen, Jian
AU - Lv, Lu
AU - Ye, Yinghui
AU - Luo, Hao
AU - Ding, Zhiguo
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - This paper proposes a new active reconfigurable intelligent surface (A-RIS) assisted joint reflection and jamming (JRJ) scheme to enhance the physical layer security of non-orthogonal multiple access, provide higher degrees of freedom, and overcome the effect of double fading. Specifically, the elements on the A-RIS are exploited for simultaneous signal reflection and jamming generation. The transmit beamforming, amplification factor, working mode, and phase shift of each A-RIS element are jointly optimized to maximize the system sum rate by considering imperfect channel state information of an eavesdropper. A penalty based alternating optimization algorithm is then devised to solve the above resource allocation problem. Numerical results are provided to demonstrate the security advantage of the proposed JRJ scheme over the existing baselines.
AB - This paper proposes a new active reconfigurable intelligent surface (A-RIS) assisted joint reflection and jamming (JRJ) scheme to enhance the physical layer security of non-orthogonal multiple access, provide higher degrees of freedom, and overcome the effect of double fading. Specifically, the elements on the A-RIS are exploited for simultaneous signal reflection and jamming generation. The transmit beamforming, amplification factor, working mode, and phase shift of each A-RIS element are jointly optimized to maximize the system sum rate by considering imperfect channel state information of an eavesdropper. A penalty based alternating optimization algorithm is then devised to solve the above resource allocation problem. Numerical results are provided to demonstrate the security advantage of the proposed JRJ scheme over the existing baselines.
UR - http://www.scopus.com/inward/record.url?scp=85173048647&partnerID=8YFLogxK
U2 - 10.1109/ICCC57788.2023.10233354
DO - 10.1109/ICCC57788.2023.10233354
M3 - Conference contribution
AN - SCOPUS:85173048647
T3 - 2023 IEEE/CIC International Conference on Communications in China, ICCC 2023
BT - 2023 IEEE/CIC International Conference on Communications in China, ICCC 2023
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 10 August 2023 through 12 August 2023
ER -