Mengle Zhao

TL;DR: In this paper, the authors considered an ambient backscatter NOMA system in the presence of a malicious eavesdropper and derived the analytical expressions for the outage probability and the intercept probability.

TL;DR: In this paper, 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, were investigated.

TL;DR: The reliability of the considered NOMA system is high under ideal conditions, but the security is low, and an artificial noise scheme is proposed where the radio frequency source acts as a jammer that transmits interference signals to the legitimate receivers and eavesdropper.

TL;DR: Numerical results show that although IQI reduces the reliability, it can enhance the security, and the considered AmBC NOMA systems can obtain better reliability when the SNR is lower.

TL;DR: This paper investigates the reliability and security of cooperative dual-hop non-orthogonal multiple access for internet-of-thing (IoT) networks, in which the transceivers consider a detrimental factor of in-phase and quadrature-phase imbalance (IQI).