In this paper, we develop an optimization framework for the symbiotic operation of a
multiuser cognitive radio network (CRN) consisting of a non-orthogonal multiple access …

Cognitive radio and backscatter communication (BackCom) have been viewed as two
promising technologies for the future green Internet of Things (IoT). The combination of …

This paper investigates reconfigurable intelligent surface (RIS)-aided cognitive non-
orthogonal multiple access (NOMA) systems, where an RIS is deployed to serve two users …

In this paper, we present a hybrid ambient backscatter communication (ABC) assisted
framework for radio frequency (RF) powered cognitive radio networks (CRNs). In these …

To enhance the backscatter-links with double fading effect in non-orthogonal multiple
access assisted backscatter communication (NOMABC), a new reconfigurable intelligent …

Ambient backscatter communications (AmBC) have introduced a revolutionary approach to
wireless communication that utilizes ambient radio frequency (RF) signals in contrast to self …

In this letter, we consider a multi-user cognitive backscatter network. Backscatter devices
(BDs) not only share the spectrum with the primary user, but also harvest energy from and …

As a revolutionary technology, reconfigurable intelligent surface (RIS) is favored by
numerous industrialists and engineers, which can intelligently adjust the wireless …

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 …

The growing demanding data rate requirements of future wireless networks have raised
enormous concerns on energy consumption. Researchers conduct their study of green …