Due to the inefficient use of the licensed frequency spectrum, a significant portion of the
spectrum is left unutilized. This has led to the emerging of the Cognitive Radio (CR) as new …

The improper utilization of frequency spectrum can be overcome by oppurtunistically using
the bands allocated to the licensed primary users. Cognitive radio networks can be …

A cognitive radio should be able to detect unused spectrum band and to change its
transmission parameters in order to transmit within these free bands. To achieve this …

Cognitive Radio is an enabling technology for accessing the unused spectrum. It may need
to work in blind scenarios where it is unaware of the received signal parameters. In real-time …

This paper proposes a novel method to improve the performance and reduce the
implementation design complexity of the angular domain cyclostationary feature detection …

The most challenging problem in Cognitive radio is the detection of unused frequency bands
and exploit them opportunistically for spectrum access. Cognitive radios must be able to …

Cognitive Radio is an advanced enabling technology for efficient utilization of vacant
spectrum due to its ability to sense the spectrum environment. Various detection methods …

The key issue in cognitive radio is to design a reliable spectrum sensing method that is able
to detect the signal in the target channel as well as to recognize its type. In this paper …

One of the key challenges for state of the art radio systems is enabling efficient utilisation of
the Radio Frequency (RF) spectrum. Licensed frequency bands are often under-utilised in …

Cognitive radio system is a context-aware technology in communications. Spectrum
awareness is an important function in the design of cognitive radio systems. It senses the …