… User cooperation to improve spectral efficiency and utilization in an overlay CRN is also …
cooperative cognitive radio networking (CCRN) [4–6, 9]. This article introduces two cooperation …

… radio network that shares a set of channels with a primary network. Within the cognitive …
This motivates our objective of maximizing the throughput of a cognitive radio network while …

… networks is to densify the Radio Access Network (RAN) by increasing the number of small
cells and to leverage the cooperation … to mitigate interference among users and thus increase …

… and efficiency in user cooperation for spectrum sensing in cognitive radio networks. Then,
we presented two new cooperation mechanisms, including the parallel and the asynchronous …

… cooperative cognitive radio network, ie, a cognitive radio system where a Secondary user may
act as relay for messages sent by the Primary user, … of Primary user transmissions, while at …

… radio frequency (RF) design. In this paper, we provide a systematic overview on CR networking
… Assume there are 𝐾 cooperative users in the CR network and the 𝑘th (𝑘 = 1, 2, ..., 𝐾) CR …

… To cope with this problem, we propose a cognitive relay network in which distributed cognitive
users collaborate with each other so that they can share their distinct spectrum bands. By …

… Starting from such a simple, yet interesting, observation, in this article we propose to use
cooperative relay for CRNs with single-radio end users to more effectively utilize spectrum …

… Furthermore, we will review the joint design of coding, modulation, user-cooperation, and
CCR techniques, which leads to significant mutual benefits for both the PUs and CUs. …

… the use of power control, cooperation types, network … cooperation in cognitive radio [32]. In
[19], authors present the problem of spectrum sharing together with adaptive user cooperation …