Future communications are developed with new communication standards for multi access
technologies, where spectrum sharing and Non-orthogonal multiple access (NOMA) are the …

In this paper, a cooperative spectrum sharing scheme is proposed for NOMA based
cognitive radio networks comprising of primary and secondary networks. The primary …

Non-orthogonal multiple access (NOMA) is a promising technique to satisfy a host of access
demand and provide higher throughput. It enables that multiple users are multiplexed with …

With the exponential demand for frequency spectrum and the new generation of
communication systems (5G), efficient and less complex ways of using the spectrum are …

In this paper, we investigate a cognitive non-orthogonal multiple access (NOMA) network
scenario by adopting an amplify-and-forward (AF) relaying method. The end-to-end outage …

In this article, we investigate the performance of spectrum sharing inunderlay cognitive radio
(CR)-inspired nonorthogonal multiple access (NOMA) systems, at which a primary …

The wireless communication system has been facing a technological revolution due to the
shift through various generations. To fulfil the 5G and beyond 5G (B5G) networks, we need …

In this paper, a downlink scenario of a non-orthogonal multiple access (NOMA) scheme with
power constraint via spectrum sensing is considered. Such network provides improved …

Energy Efficiency (EE) is a significant problem for Cognitive Radio (CR) network. Recently,
more interest has focused on EE optimization problem in wireless-powered communication …

In a conventional cognitive radio (CR) network, only when the primary user's (PU) frequency
bands are sensed to be free, secondary users (SUs) can utilize these frequency band …