In this paper, we investigate beamforming design for cooperative secure transmission in
cognitive two-way relay networks, where the cognitive transmitter (CT) with multiple …

In this, we propose a generalized partial relay selection (PRS) protocol to enhance the
secrecy performance for cooperative cognitive radio networks (CRNs) in terms of the …

In this letter, we consider an underlay cognitive radio network in which a secondary
transmitter (ST) communicates with a secondary destination (SD) with the aid of multiple …

In this paper, we consider a cooperative multi-hop secured transmission protocol to underlay
cognitive radio networks. In the proposed protocol, a secondary source attempts to transmit …

In this paper, we study the secure beamforming design for a cognitive radio network (CRN),
where a primary transmitter-receiver pair coexists with an untrusted secondary transmitter …

This paper studies cooperative secure transmission in wireless relay networks, where a
source sends a confidential message to a legitimate destination through a set of amplify-and …

In this paper, we propose physical layer security for cooperative cognitive radio networks
(CCRNs) with relay selection in the presence of multiple primary users and multiple …

This letter proposes several relay selection policies for secure communication in cognitive
decode-and-forward relay networks, where a pair of cognitive relays is opportunistically …

In this letter, we analyze the physical layer secrecy performance of a two-hop cooperative
cognitive underlay relay network with a decode and forward relay and a passive …

In this paper, we propose a cooperative approach to improve the security of both primary
and secondary systems in cognitive radio multicast communications. During their access to …