The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This work addresses the Spectrum Sensing (SS) problem in Cognitive Radio (CR) context, where the CR allows SUs (Secondary Users, i.e. unlicensed users) to access PUs (Primary Users, i.e. licensed frequency bands) through dynamic spectrum access in order to reduce spectrum scarcity problem in wireless communication. We propose in this communication a new multi-antenna spectrum sensing technique of...
Software Defined Networking (SDN) has recently emerged to become one of the promising solutions for the future Internet. With the logical centralization of controllers and a global network overview, SDN brings us a chance to strengthen our network security. However, SDN also brings us a dangerous increase in potential threats. In this paper, we apply a deep learning approach for flow-based anomaly...
A new problem of optimizing a wireless mobile terminal trajectory under a given communication constraint is introduced. The mobile or vehicle has to move from a given starting point to a target point while uploading/downloading a given amount of data; this contrasts with the classical mobile communications paradigm where the communication and motion aspects are assumed to be independent. To reach...
The personal health record system allows the patients to learn more on their health indicator at any moment, but since the resources are stored in a semi-trusted cloud service provider, it is important to maintain data confidentiality while providing granular, scalable and flexible access control. For this reason, several schemes have been proposed. In this paper we propose a multi-authority attribute...
Higher order quadrature amplitude modulation (HOQAM) is one of the key technologies used in advanced mobile communication systems to achieve high data rates. However, in such systems, performance evaluation can be very complicated and time consuming due to the increase of constellation size. As a solution, a QAM scheme is seen as a combination of two pulse amplitude modulations (PAM). Nevertheless,...
In this paper, we present an alternative approach to the automated aircraft identification system. This system differs from the one proposed in the earlier literature in two ways. First, it uses a general model of the aeronautical air-ground channel which takes into account multipath propagation and Doppler shift. Second, it uses Orthogonal Frequency Division Multiplexing (OFDM) rather than single...
Thanks to several advantages offered by cloud computing, such as: reducing costs, high services scalability and flexibility. Cloud computing has become a widely adopted technology for delivering services over the Internet. However, the fear of seeing sensitive data be processed in clear has become a major barrier to cloud services adoption. Indeed, researchers have stressed a useful technique called...
Development of Next Generation and Future Networks is continuous, ongoing process. These days number of researchers are focused on development of 5G network that will provide improved future communication. Fundamental design, requests and drivers are defined and argued on daily basis expected to be finalized around 2020. In this paper we discuss future 5G network design and present novel transport...
Vehicular Ad-hoc NETwork (VANET) is a particular type of the Mobile Ad-hoc NETworks (MANET) and is developed to provide communications in a group of vehicles in range of each other and between vehicles and fixed equipments (Road Side Unit) within a communication range, usually called equipment of the road. This network is very sensible to safety problem. In this work, a new mechanism is proposed to...
The main objectives of intelligent transportation systems (ITS) are to improve vehicle occupant safety and vehicle mobility. Another objective is to provide infotainment and communication services (ICS) to vehicle occupants. To achieve those three goals, ITS must integrate several wireless networks which should work in a cooperative/competitive way to satisfy communication requirements of different...
In Internet of Things (IoT), the lifespan of Wireless Sensor Networks (WSN) has often become an issue. Sensor nodes are typically battery powered. However, high energy consumption by Radio Frequency (RF) module limits the lifespan of sensor nodes. In conventional WSN, the frequency of data transmission is normally fixed or adjusted according to requests from the gateway. In this paper, we present...
Today's the paradigm for video compression has been significant development represented by the emergence of an important number of international standards efforts of ITU-TVCEG and ISO-IEC MPEG. The main objective of the current systems (such as the standards of MPEG-X and H-E6X) is to compress the original information in order to reduce the transmission rate.
In this work we deal with the topology adapted to routing in delays tolerant networks (DTN). This topology plays a very important role in the design and implementation of routing protocols in this network deprived of any infrastructure and centralized administration with intermittent connectivity. In fact, we propose a DTN routing hierarchical topology (DRHT) that incorporates three basic concepts:...
This work addresses the problem of forwarding videos, over vehicular ad-hoc networks (VANETs), in a time-efficient manner. The problem is central for various applications due to the highly fluent wireless networks that face different challenges to existing routing approaches. This article explores a variation of a well known Geographic Routing protocol (GPSR), used in VANETs, introducing some multipath...
During the last years, both academicians and professional researchers attribute an interest to the future of cities. They conclude that the technological leap will influence the both architecture and infrastructure, which will give birth to the smart cities vision. This essay aims to provide a comprehensive understanding of the movement towards smartness by providing a study on divers smart city definitions...
Retrieving documents in response to the user's query is the most commonly text retrieval task. For our work, we have mainly focused on detecting the semantic similarity between documents in large documents collection and queries. In this paper, we investigated MapReduce as a specific framework for managing distributed processing in dataset pattern and semantic similarity measures of documents. Then...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.