Cognitive radio (CR) is regarded as the key technology of the 6th-Generation (6G) wireless
network. Because 6G CR networks are anticipated to offer worldwide coverage, increase …

Cognitive radio (CR) is becoming an increasingly significant component of Internet-of-
Things technologies because it overcomes the challenge of spectrum resource scarcity for …

Physical-layer security (PLS) for an underlay cognitive radio network (CRN)-based
simultaneous wireless information and power transfer (SWIPT) over cascaded κ-µ fading …

In this paper, the radio frequency energy harvesting (EH) and security issues in Internet of
Things (IoT) sensor networks with multiple untrusted relays are considered. In particular, the …

In this article, we propose a secrecy-aware energy-efficient scheme for a two-tier
heterogeneous network (HetNet), consisting of a sub-6 GHz macrocell and multiple …

Cognitive radio (CR) as a key technology of solving the problem of low spectrum utilization
has attracted wide attention in recent years. However, due to the open nature of the radio …

Cognitive radio (CR), non-orthogonal multiple access (NOMA), and full-duplex (FD)
communications have been considered key technologies for providing spectrum utilization …

In this paper, a novel wireless energy harvesting cooperative jammer (EH-CJ)-aided
transmission scheme, which can enhance the security for cooperative cognitive radio …

In this paper, physical-layer security (PLS) of an underlay cognitive radio network (CRN)
operating over cascaded Rayleigh fading channels is examined. In this scenario, a …

In this paper, we investigate secure communications in energy harvesting enabled
cooperative cognitive radio networks (CCRNs). In such CCRNs, a pair of primary users …