It is a challenge for automatic modulation recognition (AMR) methods for radiation source
signals to work in environments with low signal-to-noise ratios (SNRs). This paper proposes …

Background: The spectrum scarcity plays a vital role in wireless communications. We are in
the situation to use it through an efficient methodology. Objective: To identify the holes in the …

Cognitive radios have been proposed for opportunistic users to make use of the frequency
bands allocated to licensed users. For this to be possible, spectrum sensing should be …

This paper, energy detection using a bootstrap approach describe a proposal for spectrum
sensing. The proposed model is applied in the case of small sample size and to deal with …

Energy detection based cognitive radio has gained remarkable attention. This is because of
its simple implementation and it does not involve any prior knowledge of the detecting …

MR. A. AMROUCHE Professeura USTHB/FGE Président MR. A. HAMZA Professeura
USTHB/FGE Directeur de these MR. A. GASSOUM Professeura USD. BLIDA Examinateur …

Spectrum sensing applications cover wide variety, such as efficient utilization of frequency
spectrum, and in medical applications. The conventional architecture used by all the …

Cognitive radio CR is proposed to solve the problem of spectral scarcity by allowing
opportunistic spectrum access. The main challenge for cognitive radio is spectrum sensing …