… Cognitive radio is an efficient and attractive technique to improve the utilisation efficiency of
… is one of the representative cognitive radio networks. In the underlay scenario, the cognitive (…

… and relay selection did not include [17]. In [18], the resource … in NOMA-based cognitive
wireless networks was considered … relaying instead of a dedicated relaying for simple network …

… In contrast to the studies in [5]-[7], this paper proposes a joint relay selection and power …
networks. In our system model, both the relay which is selected from a set of available relaying …

… For the use of multiple relays in the secondary network, we … For these two power allocation
constraints and relay selection … with best-relay selection in cognitive radio networks,” IEEE …

… proposes a partial relay-based … partial relay selection techniques [17], the term “partial
relay” in our scheme refers to that one SU spends part of its detection period acting as the relay …

… energy-aware centralized relay selection scheme that takes into account the relay selection,
… Specifically, the CR system is formulated as a partially observable Markov decision process …

… partial relay selection protocol. It was shown in [10]-[13] that the outdated channel coefficient
hij which cognitive … scheme with best-relay selection in cognitive radio networks,” IEEE Trans…

… Abstract In recent years, cooperative diversity and cognitive radio have received consid…
partial relay selection in the first-hop transmission, with the relay nodes pertaining to the selected …

… , considering both cognitive radio and non-cognitive scenarios, a partial relay … relay selection
scheme is a special case of our proposed scheme. The destination employs the selection …

… SR, we select a NOMA relay for the SR, which offers the spatial diversity gain to the SR. For
the relay selection, we utilize a partial channel state information between the candidate relay-…