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.
In this paper, a new control methodology is proposed for a class of nonlinear control systems. The proposed methodology combines the advantages of both gain scheduling technique and fuzzy control technique to obtain an advanced tracking control structure. This methodology is applicable for tracking a special case of second order nonlinear systems that represented in a general form similar to many...
Electric Vehicle (EV) has come into attention within automotive industry over the years. The feature of EV that uses electric as primary source provides benefits to customers. As electrical system is the major appeal of an EV, the present study focuses on the charging system where it involves DC-DC converter for high voltage charger. The phase-shifted-full bridge and LLC are used in high power application...
This book constitutes the refereed proceedings of the 7th Asia Information Retrieval Societies Conference AIRS 2011, held in Dubai, United Arab Emirates, in December 2011. The 31 revised full papers and 25 revised poster papers presented were carefully reviewed and selected from 132 submissions. All current aspects of information retrieval - in theory and practice - are addressed; the papers are organized...
Acquiring more spectral resources is a key enabler for the envisioned high data rates of next generation mobile networks. Licensed-assisted access (LAA) to the vast and free-of-charge unlicensed spectrum has been therefore receiving tremendous interest, especially with the advancements in small cells and carrier aggregation. We propose a novel 5G MAC solution for fair and efficient coexistence with...
The date palm - one of the oldest domesticated fruit crops - is the tree most adapted to growing in desert areas. It has always been looked upon as a key source of stability, survival and evolution of the oasis agro-system as it constitutes the basic features of the ecological pyramid in desert regions. Tunisian date palm germplasm is characterised by high genetic diversity, with more than 250 varieties...
Power line maintenance plays a vital role in line performance and equipment utilization. This paper presents an improved mathematical model to optimize the application of multi-criteria decision making (MCDM) in power line maintenance. The model used in this work is formulated to attain an optimal utility of power lines through the applications of MCDM. In this study, a MCDM by the means of an Analytical...
This paper describes the ability of the extension of the Zero Voltage Switching range of the series resonant converter, through the analysis of dependency on the soft switching technique. The proposed method was explained and simulated to extend the ZVS region by using MATLAB-SIMULINK software. The results were then compared with those of typical series resonant converter using the same parameters,...
Cooperation among network nodes at one side and terminal nodes on the other side are the two main enablers of radio access virtualization to establish scalable and dynamically adjustable data pipes to the users in the 5G mobile networks. User cooperation requires careful design to address cooperation incentive, battery life, user discovery, security and privacy. Dummy user, a network-aware terminal,...
A virtualized radio access network (VRAN) is envisaged in next generation wireless networks. Therein, users experience a seamless ubiquitous service without cell-specific signaling through transparent grouping of densely deployed transmit points (TPs) and helping UEs. Aiming at reducing the Carbon footprint as well as the operational expenditure while maintaining users' QoS, we propose an energy/cost-aware...
In this paper, we introduce a virtualized device-centric radio access architecture for future fifth-generation (5G) mobile networks. Radio access networks (RAN)s have traditionally relied on Voronoi tessellations of cells, created by a careful deployment of access nodes, to enable spatial frequency reuse over those cells. With the trend firmly set to decouple the control- and user-planes for next-generation...
Transmission expansion planning has become a complicated process in the recent era. The fast growth of the transmission networks and the deregulation has introduced more factors to be considered in transmission expansion planning to the transmission network planners. The main goal of this process is to locate the additional transmission lines that must be added to meet the forecasted load in the system...
Virtual radio access (VRA) technology wherein groups of cooperative transmit points (TPs) form virtual TPs (VTPs) to serve user equipments (UEs) continue to be a thriving subject of research in future generations of wireless networks. In this paper, we propose a technique that uses UE-centric metrics to provide multiple partitions of a wireless network into VTP sets. Our technique guarantees that...
Location-based Services (LBS) are one of the longest-standing value-added services in the mobile communications industry. The location of a user is the fundamental factor shaping such services and is usually computed solely in terms of the physical location relying on Reverse Geocoding APIs. It does not take into consideration the semantics of the location, but rather only the geographic spatial information,...
This paper proposes a comparative study between the performance of sine-triangle, third harmonic injection and space vector modulation schemes in terms of conducted (common and differential mode) EMI generated by two-level three-phase voltage source inverters. For this purpose, an experimental setup has been built to measure in time domain the conducted disturbances propagated back into the DC source...
This work proposes a method based on a mixed integer nonlinear non-convex programming model to solve the multistage transmission expansion planning (TEP). A meta-heuristic algorithm by the means of differential evolution algorithm (DEA) is employed as an optimization tool. An AC load flow model is used in solving the multistage TEP problem, The proposed technique is tested on the Colombian 93 bus...
Next generation Location-based Services (LBSs) are coined by a proactive user-interaction as well as a cross referencing target relationship. In a proactive user-interaction, a service continuously keeps track of a user's locations and performs arbitrary actions upon entry or exit of a certain region. A cross-referencing target relationship implies that the LBS user and the target are not identical,...
Since video services are expected to constitute a major portion of the mobile downlink traffic, it is important to consider end users' perceptual quality of experience (QoE) for video traffic in the system design and performance evaluation of next generation mobile networks. We present a novel QoE-aware scheduling scheme for buffered video on demand (VoD). Therein, rebuffering is the critical attribute...
Conventional positioning approaches for Location-based Services (LBS) such as those provided by Google and Apple, are solely driven by geometric spatial data. Especially in proactive LBS scenarios, in which users are notified as soon as they reach a certain area, locations are mostly defined by geofences and do not incorporate any further information from the semantics of the location, such as the...
Positioning, being one of the main factors shaping services that deliver information to users based on their location, has experienced huge advancements over the past years. Today, the combination of device-centric positioning approaches, such as GPS, and device-assisted approaches, such as Cell-Id and WiFi positioning technologies, has proved to be very popular among mobile platforms. Nevertheless,...
Various standardization activities leading to 4G and beyond networks have considered the synergy of OFDMA and multihop relaying thus giving way for the fixed relay station (FRS)-based radio access network. As such, the next-generation networks will comprise a plethora of performance enhancing devices among which is the plug-and-play nomadic relay station (NRS). It is essential for such dense and inevitably...
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.