Academy & Industry Research Collaboration Center
In cognitive radio networks, the pertinent task of spectrum sensing at the Secondary Users (SUs) can be achieved when the SUs cooperate in order to make a final decision about the presence of a communicating Primary User (PU). In this paper, the authors study a two-hop relaying system in which SUs are grouped into D clusters. The SUs transmit a simple power function (parameterized by p) of their observation to a Fusion Centre (FC) using D orthogonal channels. The FC combines the receptions from cooperating nodes linearly.