scholarly journals Multilevel modulated chaos MIMO transmission scheme with physical layer security

2014 ◽  
Vol 5 (2) ◽  
pp. 140-156 ◽  
Author(s):  
Eiji Okamoto ◽  
Yuma Inaba
Keyword(s):  
Physical Layer Security ◽  
Physical Layer ◽  
Transmission Scheme ◽  
Mimo Transmission

scholarly journals Physical layer security transmission scheme based on artificial noise in cooperative SWIPT NOMA system

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Yong Jin ◽  
Zhentao Hu ◽  
Dongdong Xie ◽  
Guodong Wu ◽  
Lin Zhou
Keyword(s):  
Interference Cancellation ◽  
Physical Layer Security ◽  
High Energy ◽  
Physical Layer ◽  
Base Station ◽  
Artificial Noise ◽  
Transmitted Power ◽  
Transmission Scheme ◽  
Convex Problem ◽  
Security Problem

AbstractAiming at high energy consumption and information security problem in the simultaneous wireless information and power transfer (SWIPT) multi-user wiretap network, we propose a user-aided cooperative non-orthogonal multiple access (NOMA) physical layer security transmission scheme to minimize base station (BS) transmitted power in this paper. In this scheme, the user near from BS is adopted as a friendly relay to improve performance of user far from BS. An energy harvesting (EH) technology-based SWIPT is employed at the near user to collect energy which can be used at cooperative stage. Since eavesdropper in the downlink of NOMA system may use successive interference cancellation (SIC) technology to obtain the secrecy information of receiver, to tackle this problem, artificial noise (AN) is used at the BS to enhance security performance of secrecy information. Moreover, semidefinite relaxation (SDR) method and successive convex approximation (SCA) technique are combined to solve the above non-convex problem. Simulation results show that in comparison with other methods, our method can effectively reduce the transmitted power of the BS on the constraints of a certain level of the secrecy rates of two users.

scholarly journals Improving Physical Layer Security of Cooperative NOMA System with Wireless-Powered Full-Duplex Relaying

Information ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 279
Author(s):  
Yuan Ren ◽  
Yixuan Tan ◽  
Meruyert Makhanbet ◽  
Xuewei Zhang
Keyword(s):  
Physical Layer Security ◽  
Multiple Access ◽  
Physical Layer ◽  
Cooperative Transmission ◽  
Full Duplex ◽  
Artificial Noise ◽  
Transmission Scheme ◽  
Self Energy ◽  
Wireless Energy Harvesting ◽  
Secure Transmission

Non-orthogonal multiple access (NOMA) and wireless energy harvesting are two promising technologies for improving spectral efficiency and energy efficiency, respectively. In this paper, we study the physical layer security of a wireless-powered full-duplex (FD) relay-aided cooperative NOMA system. In particular, the source is wiretapped by an eavesdropper, and the FD relay assists the transmission from the source to a near user and a far user with self-energy recycling. To enhance the security performance of the system, we propose an artificial noise (AN)-aided cooperative transmission scheme, in which the relay emits a jamming signal to confuse the eavesdropper while receiving the signal from the source. For the proposed scheme, the ergodic secrecy sum rate (ESSR) is derived to characterize the secrecy performance and a lower bound of ESSR is obtained. Finally, numerical results verify the accuracy of the theoretical analysis of the proposed AN-aided secure transmission scheme. The superiority of the proposed scheme is also demonstrated since this scheme can achieve better secrecy performance, compared to the conventional cooperative NOMA scheme.

Physical Layer Security Transmission Scheme Based on Artificial Noise in Cooperative SWIPT NOMA System

2020 ◽  
Author(s):  
Yong Jin ◽  
Zhentao Hu ◽  
Dongdong Xie ◽  
Guodong Wu ◽  
Lin Zhou
Keyword(s):  
Interference Cancellation ◽  
Physical Layer Security ◽  
Multiple Access ◽  
Physical Layer ◽  
Base Station ◽  
Artificial Noise ◽  
Transmission Scheme ◽  
Transmit Power ◽  
Security Scheme ◽  
Convex Problem

Abstract Physical layer security of non-orthogonal multiple access (NOMA) system which uses simultaneous wireless information and power transfer (SWIPT) technique is deeply dicussed in this paper. Generally, eavesdropper in the downlink of NOMA system may use successive interference cancellation technology (SIC) to obtain the secrecy information of receiver. To tackle this problem, we propose a physical layer security scheme to minimize the transmit power of the base station (BS) while the secrecy rates of receivers are guaranteed. Moreover, semidefinite relaxation (SDR) method and successive convex approximation (SCA) technique are combined to solve above non-convex problem. Simulation results show that in comparison with other methods, our method can effectively reduce the transmit power of the BS.

Sign in / Sign up

Export Citation Format

Share Document