… underlay cognitive radio system in the presence of primary user interference. Particularly, we
consider a secondary multi-relay network … for the secondary multi-relay network and further …

… multi-relay cooperative underlay cognitive radio networks in the presence of multiple primary
transmitters and multiple primary receivers. Based on the adopted power control scheme, …

… outage probability of the underlay cognitive multisource multirelay cooperative network [18][…
paper proposes a system model of multisource multi-relay secondary network that needs to …

… Network description We consider an underlay cognitive radio network that consists of a
single … The primary network consists of a transmitter (Tx), and a receiver (Rx). In addition, co-…

… Multi-Relay Cognitive Networks: For a network with multiple candidate … In this paper,
for a CRCC AF-relay-based system with underlay cognitive mode, we formulate the problem …

… in underlay RCRNs has … schemes of multiple relay selection for underlay RCRNs; one
based on ABC optimization and the second based on FRBS. The goal of both proposed schemes …

… Compared to [32] or [33] wherein the secrecy performance for underlay CRNs with single
or … three different relay selection schemes in the underlay cognitive radio systems experiencing …

… scarcity problem of wireless resources [1], [2]. Also known as underlay cognitive radio, such
a … SYSTEM MODEL We consider the underlay setting depicted in Fig. 1, where a secondary …

… radio spectrum by 5G-and-B5G wireless systems. It is a usual practice in underlay cognitive
radio … complexity while maintaining full diversity gain of multi-relay networks, relay selection …

… On the other hand, cognitive radio paradigm has recently … Thus, a higher efficiency is
expected for a wireless network … Since the spectrum sharing scheme is underlay, the interference …