Due to the shortcomings of the standard bat algorithm (BA) for multi-parameter optimization,
an improved bat algorithm is proposed. The benchmark function test shows that the …

Adopting full-duplex (FD) technique in the underlay cognitive radio network (CRN), the
secondary user can sense the activity of the primary user (PU) and transmit data …

With the extensive application of modulation classification in the field of wireless
communication, various methods of modulation classification have been proposed to …

This letter analyzes the outage performance of the cooperative underlay NOMA-based
cognitive radio (CR) network with the proposed channel-dependent interference threshold …

Nowadays, security becomes one of the utmost important issues in designing mobile
communication networks, especially for non-orthogonal multiple access (NOMA), in which …

This article considers non‐orthogonal multiple access (NOMA) enabled full‐duplex (FD)
underlay cognitive relay networks (ie, NOMA‐FDCRNs) with partial relay selection scheme …

Proper relay selection (RS) plays a key role for improving the reliability of wireless networks,
especially in the presence of jamming attacks and/or interferers. In this work, we consider …

In this paper, the performance of a multicarrier underlay cognitive radio system is analyzed
considering that the successive interference cancellation (SIC) method is used for detection …

This paper investigates the physical layer security (PLS) of non-orthogonal multiple access
(NOMA)-enabled overlay cognitive radio networks (NOMA-OCRNs), considering multiple …

This paper presents a non-orthogonal multiple access (NOMA)-based spectrum sharing
scheme with imperfect successive interference cancellation (i-SIC), where the secondary …