In the uplink cognitive radio-inspired nonorthogonal multiple access (CR-NOMA) systems,
the successive interference cancellation (SIC), and power control (PC) schemes were …

This paper investigates physical layer security (PLS) in cognitive radio inspired non-
orthogonal multiple access (CR-NOMA) networks with multiple primary and secondary …

This letter studies the secure transmission issue of non-orthogonal multiple access (NOMA)
based cognitive radio networks (CRNs) with imperfect channel state information (CSI) …

Cognitive radio inspired non-orthogonal multiple access (CR-NOMA) networks are a
research focus in the wireless communication field. The secure communication of wireless …

An underlay cognitive radio network (CRN) with non-orthogonal multiple access (NOMA) is
a promising multiple access scheme to solve the problem of scarce spectrum. This novel …

In this article, we investigate physical layer security (PLS) in non-orthogonal multiple access-
enabled (NOMA-enabled) underlay cognitive radio networks (CRNs) with outdated channel …

Cognitive radio network (CRN) and non-orthogonal multiple-access (NOMA) play the crucial
roles in the fifth generation wireless communication systems. However, the physical-layer …

This study investigates the secrecy outage performance of a single‐input multiple‐output
underlay cognitive radio network (CRN) with outdated channel state information (CSI). The …

Reconfigurable intelligent surface (RIS) has been regarded as a promising technology since
it has ability to create the favorable channel conditions. This paper investigates the secure …

Cooperative communication that integrates cognitive radio and non-orthogonal multiple
access is recognized as an emerging technology for fifth-generation and beyond wireless …