Moez Esseghir

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In the last decade, cognitive radio technology received a lot of consideration for spectrum optimization. This issue creates huge opportunities for interesting research and development in a wide range of applications. This paper presents a state of the art on cognitive radio researches especially works using multi-agent systems. We propose among others a(More)
Dynamic spectrum sharing is a promising technique to optimize the spectrum utilization. It allows the cognitive radio (CR) nodes to access the available spectrum dynamically, without being restricted to static usage. In this paper, we propose multiagent system (MAS) based solutions to achieve licensed and unlicensed dynamic spectrum sharing. Firstly, we(More)
Vehicular networking has significant potential to enable diverse applications associated with traffic safety, traffic efficiency and infotainment. In this paper, we address the issue of congestion in Vehicular Ad Hoc Networks (VANETs). In VANETs, the periodic beacon broadcast may consume a large part of the available bandwidth, which may lead to severely(More)
Wireless mobile ad hoc networks (MANETs) have emerged as a key technology for next-generation wireless networking. Because of their advantages over other wireless networks, MANETs are undergoing rapid progress and inspiring numerous applications. However, many technical issues are still facing the deployment of this technology, and one of the most(More)
Recent static spectrum allocations have created an opportunity to develop novel solutions that can efficiently share the available spectrum both in licensed and unlicensed bands. Considering the relative rarity of solutions for unlicensed spectrum access, in this paper, we propose a scheme, where the cognitive radio (CR) devices (equipped with agents)(More)
We formulate and study a multi-user multi-armed bandit (MAB) problem for opportunistic spectrum access (OSA) that exploits the temporal-spatial reuse of PU channels so that SUs who do not interfere with each other can make use of the same PU channel. We propose a three-stage distributed channel allocation policy for OSA, where SUs collaboratively find an(More)
Gradual request for radio frequencies makes the traditional static spectrum allocation unable to cover all users' needs in terms of spectrum resources. Accordingly, it is extremely necessary to introduce dynamic and more efficient spectrum assignment approaches. Cognitive radio was conceived as an innovative technology to enhance spectrum utilization by(More)