In this paper, we have analyzed the effects of cooperative spectrum sensing and threshold
selection over the performance of cognitive radio network (CRN) using energy detector in …

The increased interest in full-duplex communication combined with spectrum utilization
enhancements stemming from cognitive radio motivate research activities in full-duplex …

Cognitive radio (CR) is a dynamic spectrum access technology as a solution to spectrum
under-utilization problem in some licensed bands. Operating over an exceedingly wide …

One of the techniques for spectrum sensing is the energy detection of signals from primary
transmitters. However, when detecting in a certain frequency band, this technique suffers …

Cognitive Radio has been proposed as an ideal solution for identifying and utilizing the
spectral holes in the licensed RF spectrum. Due to FSO's (Free Space Optical) susceptibility …

In this paper we evaluate the sensing performance by using a MRC based blind channel
combining scheme in low SNR environment, to sense the low level primary signal in …

This paper presents a new spectrum sensing scheme using an energy detector and multiple
antennas. This scheme helps us finding the low level signals to realize a spectrum sharing …

In this paper, we first discuss multicarrier modulation (MCM) based cognitive radio (CR)
systems. A maximum likelihood ratio spectrum detection model is then presented to detect …

Fading is a signal distortion due to the heterogeneity of the communication channel,
multipath propagation of radio waves, relative motion of the transmitter and receiver …

Due to the scarcity of the frequency spectrum and to overcome the static spectrum access
problems cognitive radio has been proposed. Dynamic spectrum access and software …