In cognitive radio (CR) networks, hard fusion is widely applied for cooperative energy
spectrum sensing, since it requires only one bit to transmit the decision results between …

Spectrum sensing is one of the most important tasks of each cognitive radio network.
Cooperation among secondary users, by increasing the sensing accuracy can improve the …

Cooperative energy spectrum sensing has been widely applied in cognitive radio (CR)
networks. In this paper, two cooperative sensing algorithms based on the received signals' …

Cooperative spectrum sensing is an efficient solution to deal with the effects of fading
components on detection performance in cognitive radio networks. Data fusion is one of the …

In this paper, we study the cognitive radio networks where the primary users transmit data
with multiple power levels. A cooperative sensing algorithm with soft combination based on …

In cognitive radios, there exist two kinds of detection errors: missed-detection errors and
false-alarm errors. These errors severely degrade sensing performance. In this paper, we …

This paper proposes new method to optimize the overall performance in hard cooperative
spectrum sensing in cognitive radio (CR) networks. Two optimization strategies are …

Sensing in cognitive radio (CR) protects the primary user (PU) from bad interference.
Therefore, it is assumed to be a requirement. However, sensing has two main challenges; …

Cooperation among different cognitive radios is used to enhance the sensing performance
by exploiting the multiuser diversity. Soft and Hard decision fusion schemes are usually …

In cognitive radio network (CRN), traditional energy detection algorithm has a bad detection
performance in fading and shadowing environment. So cooperative spectrum sensing …