Today's wireless networks allocate radio resources to users based on the orthogonal
multiple access (OMA) principle. However, as the number of users increases, OMA based …

NOMA is a promising radio access technique for next-generation wireless networks. In this
article, we investigate the NOMA-based cooperative relay network. We begin with an …

This paper investigates the impact of residual transceiver hardware impairments (RTHIs) on
cooperative non-orthogonal multiple access (NOMA) networks, where generic fading …

Non-orthogonal multiple access (NOMA) scheme is emerging as a favourable multiple
access scheme for future 5G networks. Compared to orthogonal multiple access techniques …

The emerging non-orthogonal multiple access (NOMA), which enables mobile users (MUs)
to share same frequency channel simultaneously, has been considered as a spectrum …

Non-orthogonal multiple access (NOMA) is currently considered as a promising technology
for the next-generation wireless networks. In this paper, the error rate performance of NOMA …

Due to massive connectivity and increasing demands of various services and data-hungry
applications, a full-scale implementation of the fifth generation (5G) wireless systems …

We investigate a secrecy-enhancing design for cooperative downlink and uplink non-
orthogonal multiple access (NOMA) transmissions with an untrusted relay. A source uses the …

In this work, we investigate a novel covert communication system, where the legitimate
transmitter attempts to communicate with a covert user in the presence of a warden and the …

In this paper, we examine the physical layer security of a cooperative relay network where
two source-destination pairs communicate through a decode-and-forward (DF) relay in the …