… and partial channel state information, respectively. The author derives exact closed-form
expressions for both relay selection … provided by the relay selection in cognitive radio networks. …

… spectrum demand for emerging wireless communication services. Fortunately, it has
been shown that this issue can be effectively resolved with the aid of cognitive radio (CR) …

… Sequential decision making in cognitive radio networks has been studied in many works.
In [… sharing in cognitive radio network. We consider a cognitive radio network composed of …

… The derivation of the exact closed-form outage probability expression at \(S_d\) for the
opportunistic relay selection in cognitive radio networks with PU’s interference and direct channel …

… Abstract—In this paper, we consider an underlay multipleinput-multiple-output (MIMO)
cognitive radio network (CRN) including a pair of primary nodes, a couple of secondary nodes, …

… destination is selected; the Nth best-relay selection method is … a partial relay selection
scheme where the selected relay is … relay selection schemes, the proactive relay selection is …

… Abstract—This paper investigates joint relay selection (RS) and power allocation (PA) in
cognitive radio (CR) systems, in which relay nodes operate in amplify-and-forward (AF) mode. …

… control at relays. In this paper, our main objective is the problem of optimal relays selection
to the SUs in a cognitive radio network with discrete power levels working under AF mode. …

… In summary, the previous works in [14–20] only investigated the outage performance of
the relay selection in cognitive radio networks under simplified operation conditions such as …

… The performance analysis for the partial relay selection scheme accounting … cognitive radio
networks was studied in [6]–[8] but these works did not mention the issue of the relay selection…