Cognitive radio is widely expected to be the next Big Bang in wireless communications.
Spectrum sensing, that is, detecting the presence of the primary users in a licensed …

Recently, spectrum sensing has been intensively studied as a key technology in realizing
the cognitive radio. There have been advances in the performance of spectrum sensing …

A new approach to spectrum sensing in cognitive radio systems based on the Kolmogorov-
Smirnov (KS) test is proposed. The KS test is a non-parametric method to measure the …

Spectrum sensing is the basic and essential mechanisms of Cognitive Radio (CR) to find the
unused spectrum. This paper presents an overview of CR architecture, discusses the …

The spectrum sensing problem has gained new aspects with cognitive radio and
opportunistic spectrum access concepts. It is one of the most challenging issues in cognitive …

Spectrum sensing is a fundamental component in a cognitive radio. In this paper, we
propose new sensing methods based on the eigenvalues of the covariance matrix of signals …

One of the most important challenges in cognitive radio is how to measure or sense the
existence of a signal transmission in a specific channel, that is, how to conduct spectrum …

Spectrum sensing is one of the enabling functionalities for cognitive radio systems to
operate in the spectrum white space. To protect the primary incumbent users from …

Cognitive radios are indispensable to shift paradigm from conventional exclusive spectrum
assignment to dynamic spectrum access. They can boost up spectrum utilization …

Cognitive radios sense the radio spectrum in order to find unused frequency bands and use
them in an agile manner. Transmission by the primary user must be detected reliably even in …