Spectrum sensing is the primary task of cognitive radio technology. How to monitor the radio
signal in space real-timely and efficiently is a hotspot and difficult point of the research about …

The technical innovation in wireless application increases the demand for wireless band day
by day. It burdens the unlicensed spectrum band. On other hand the licensed spectrum …

Cognitive radio is considered as a promising approach to improve the utilization efficiency of
radio spectrum resources. One of the key technologies of cognitive radio is spectrum …

Spectrum sensing is a key step in cognitive radio communication systems. The probability of
detection and probability of false-alarm are two crucial performance parameters in spectrum …

The exponential growth of wireless data traffic required a promising technology which can
exploit the underutilization of spectrum. CR can enhance the overall spectrum efficiency by …

Spectrum sensing enables cognitive radio systems to detect unused portions of the radio
spectrum and then use them while avoiding interferences to the primary users. Energy …

For a cognitive radio, its primary task is to find unutilized portion of the spectrum more
precisely for successful implementation of dynamic spectrum sensing. In this paper, first a …

In mobile communication, spectrum can be sensed by using cognitive radio technology. It
can be determined in both primary and secondary forms. The main challenges used for …

With the increase in utilization of portable devices and ever-growing demand for greater
data rates in wireless transmission, an increasing demand for spectrum channels was …

Cognitive radio is an intelligent radio wireless communication technology in order to
increase the spectrum efficiency. In this paper one of the most important cognitive radio task …