Spectrum sensing is one of the key technologies in the field of cognitive radio, which has
been widely studied. Among all the sensing methods, energy detection is the most popular …

Cognitive Heterogeneous Network (CHN) is a network that provides heterogeneous
services on a cognitive radio basis. The existence of such heterogeneous services …

Traditional spectrum sensing requires complex prior information from primary user (PU), and
consumes a lot of energy and time in the sensing process. In order to improve the efficiency …

In traditional half duplex cognitive radio networks, secondary users can only sense the
spectrum or transmit at a given time. This kind of half duplex network limits the throughput of …

Spectrum-sensing algorithms are one of the effective solutions to the problem of the
underwater spectrum resource constraint. However, because the underwater acoustic …

In this paper, we propose a weak signal detection method based on spatial spectrum-long
short-term memory (LSTM) neural network to address the problem that the traditional blind …

With wireless communication's rapid expansion, the accessible spectrum is becoming
increasingly congested since the spectrum is a scarce resource and cannot be divided into …

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

Overviewing the past the past period of 20 years, it is evident that in certain geographical
regions, the spectrum, lay unutilized whereas other areas face spectrum crunch. To boost …

The primary notion of cognitive radio (CR) focuses on a sensing technique, that is a
significant operation in the process of discovering free holes in the licensed and unlicensed …