… These problems are coupled together: relay selection determines the spectrum sharing …
of the system architecture of cognitive radio network with cooperative relay. We design the …

… cognitive radio networks under spectrum-sharing constraints is investigated. In the proposed
cognitive radio network, the secondary network … out of N relays by using an efficient relay–…

… dynamically share the spectrum that is not used by the primary licensed users. Cognitive radio
was … Meanwhile, cooperative relay technology is regarded widely as a key technology for …

… Abstract—In this paper, we propose a relay assisted spectrum sharing (RASS) scheme …
the mixed sharing strategy in cognitive radio networks. Mixed sharing is a more general sharing …

… has the capability to detect the channels present in wireless spectrum automatically so that
it … The major challenges in cognitive radio networks are relay selection and effective sharing …

… JRAPA scheme for shared-band relaying in multiuser CRSs … multiple-relay assignment in
shared-band relaying in CRSs. … problem for JRAPA in shared-band AF relaying in CRSs. 2) …

… Recently Cognitive Radio Networking has attracted a great … The users in a cognitive radio
network (CRN) are classified … as the spectrum holes, and share them with the primary users to …

… of cognitive decode-and-forward relay networks. In such a joint relaying/spectrum-sharing …
Shafi, “Capacity limits and performance analysis of cognitive radio with imperfect channel …

… typically exploits the spectrum sensing to detect spectrum holes for secondary transmissions
so that the primary and secondary users can share spectrum resources without harmful …

This paper investigates the impact of primary transmissions on the performance of a dual-hop
bidirectional cognitive radio system. The secondary users (SUs) communicate with each …