Cognitive radio technology allows the unlicensed users to utilize spectrum by sensing it
reliably. The main obstacles in this sensing are fading and shadowing effects which are …

To find spectrum opportunities for secondary (unlicensed) users, cognitive radio Spectrum
detection is essential. This research paper proposed an advance spectrum sensing …

Cognitive Radio (CR) emerging approach which solves issues like spectrum scarcity and
underutilization is resolved putting into effect the innovative ideas. FCC has announced a …

Cognitive radio has become an effective technology to solve the underutilisation problem of
the spectrum. In recent times, spectrum sensing has been intensively studied as a key …

Cognitive Radio has become an effective solution for the scarcity and the inefficient use of
the spectrum. The performance of the cognitive radio (CR) system depends however on how …

Detection is compromised when a cognitive radio (CR) user experiences deep shadowing
or fading effects. In order to detect the primary user (PU) more accurately, we allow the CR …

In this paper we have analyzed performance of relay based Cognitive Radio (CR) networks.
Later on we present a scheme for cooperative spectrum sensing known as Detect-Amplify …

Spectrum sensing is a vital phase in Cognitive Radio (CR) to identify the unutilized spectrum
for improving the spectrum utilization. Cooperative sensing is being used for spectrum …

In cognitive radio networks, secondary users are allowed to access the under-utilized
spectrum and opportunistically transmit whenever no primary signals are detected. So these …

Spectrum sensing is the key component of cognitive radio technology. However, detection is
compromised when a user experiences shadowing or fading effects. Thus, cooperative …