Adrian Popescu

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— Cognitive Radio Networks (CRNs) are emerging as a solution to increase the spectrum utilization by using unused or less used spectrum in radio environments. The basic idea is to allow unlicensed users access to licensed spectrum, under the condition that the interference perceived by the licensed users is minimal. New communication and networking(More)
WiMAX is introduced by the Institute of Electrical and Electronic Engineers (IEEE) which is standard designated 802.16d-2004 (used in fixed wireless applications) and 802.16e-2005 (mobile wireless) to provide a worldwide interoperability for microwave access. At present, telecommunication industries are highly concerned with the wireless transmission of(More)
The paper reports on recent developments and challenges in reliable multicast communication, with special focus on reliable multicast communication at the application layer. The foundation of reliable multicast communication is given by several components, which are multicast communication, congestion control and error control. Our paper is providing a(More)
This paper describes the system used by the LIPN team in the Semantic Textual Similarity task at SemEval 2013. It uses a support vector regression model, combining different text similarity measures that constitute the features. These measures include simple distances like Levenshtein edit distance, cosine , Named Entities overlap and more complex distances(More)
This paper reports on a measurement and modeling study of session and message characteristics of BitTorrent traffic. BitTorrent is a peer-to-peer (P2P) replication and distribution system developed as an alternative to the classical client-server model to reduce the load on content servers and networks. Results are reported on measurement, modeling and(More)
In this paper we propose an unsupervised approach for acquiring domain related conceptual hierarchies from open-domain text. Super Sense Tagging (SST) is used to extract up-level terms and Wikipedia categories and WordNet are employed to construct the rest of taxonomic hierarchy. The result is a complete top-bottom taxon-omy for every formal context. We(More)
—CONVINcE is a CELTIC-PLUS project dedicated to minimizing the power consumption in IP-based video distribution networks, from the headend to the terminal. The entire video distribution chain is considered in the project, covering a wide range of entities involved in this process. Examples of these entities are headend, edge cloud, Content Distribution(More)
The research study determines OPNET simulation to evaluate the MANET routing protocols i.e. AODV, DSR, GRP and OLSR performance for HTTP and FTP base application traffic. Results from the simulation result helps to measure the performance matrix i.e. packet delivery fraction, normalized routing load, throughput and end to end delay. Scalar values are(More)