Spectrum sensing is a key function of cognitive radio to prevent the harmful interference with
licensed users and identify the available spectrum for improving the spectrum's utilization …

ldquoSpectrum holesrdquo represent the potential opportunities for noninterfering (safe) use
of spectrum and can be considered as multidimensional regions within frequency, time, and …

Cooperative spectrum sensing has been shown to be able to greatly improve the sensing
performance in cognitive radio networks. However, if cognitive users belong to different …

Spectrum sensing for cognitive radio allows a secondary user to detect spectrum 'holes' and
to opportunistically exploit this space for unlicensed communication. Blind spectrum sensing …

We study the distributed spectrum sensing in cognitive radio networks. Existing distributed
consensus-based fusion algorithms only ensure equal gain combining of local …

In cooperative spectrum sensing, information from several cognitive radios (CRs) is used for
detecting the primary user. To reduce sensing overhead and total energy consumption, it is …

Given an image region of pixels, second order statistics can be used to construct a
descriptor for object representation. One example is the covariance matrix descriptor, which …

In cognitive radio networks, spectrum sensing is a fundamental function for detecting the
presence of primary users in licensed frequency bands. Due to multipath fading and …

The main challenge for a cognitive radio is to detect the existence of primary users reliably in
order to minimise the interference to licensed communications. Hence, spectrum sensing is …

Biometrics-based personal authentication systems are becoming popular with increased
demand on security. A biometrics is expected to have significant amount of discriminatory …