Modulation classification is one of the key tasks for communications systems monitoring,
management, and control for addressing technical issues, including spectrum awareness …

The future generation networks (5G) are expected to achieve high data rates, reduced
latency, increased spectral efficiency and energy efficiency of the system. Since the …

In this paper, we focus our attention on the cooperative uplink transmissions of systems
beyond the LTE-Advanced initiative. We commence a unified treatment of the principle of …

This article investigates the physical-layer security of CR networks, which are vulnerable to
various newly arising attacks targeting the weaknesses of CR communications and …

In this paper, we consider a cognitive radio network that consists of one cognitive base
station (CBS) and multiple cognitive users (CUs) in the presence of multiple eavesdroppers …

In this paper, we investigate the physical-layer security of a multi-user multi-eavesdropper
cognitive radio system, which is composed of multiple cognitive users (CUs) transmitting to a …

In this paper, we examine the physical-layer security for a spectrum sharing system
consisting of multiple source-destination pairs, which dynamically access their shared …

In this paper, we study physical layer security in an underlay cognitive radio (CR) network.
We consider the problem of secure communication between a secondary transmitter …

Cognitive radio has attracted considerable attention because of its ability to make full use of
the available spectrum resources for wireless terrestrial communication networks. In …

This paper applies the reinforcement learning in the joint relay selection and power
allocation in the secure cognitive radio (CR) relay network, where the data buffers and full …