Research Units: المرسلات الحديثة
السجلات المعروضة 181 -- 200 من 5212
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Bandwidth and power allocation for two-way relaying in overlay cognitive radio systems
( IEEE , 2014 , Conference Paper)In this paper, the problem of both bandwidth and power allocation for two-way multiple relay systems in overlay cognitive radio (CR) setup is investigated. In the CR overlay mode, primary users (PUs) cooperate with cognitive ... -
On the use of device-to-device communications for QoS and data rate enhancement in LTE public safety networks
( IEEE , 2014 , Conference Paper)In this paper, device-to-device (D2D) communications are investigated in the framework of LTE public safety networks. A clustering approach to enhance the performance of public safety D2D networks is proposed. In each ... -
Multi-operator collaboration for green cellular networks under roaming price consideration
( IEEE , 2014 , Conference Paper)This paper investigates the collaboration between multiple mobile operators to optimize the energy efficiency of cellular networks. Our framework studies the case of LTE-Advanced networks deployed in the same area and ... -
Optimized green operation of LTE networks in the presence of multiple electricity providers
( IEEE , 2012 , Conference Paper)Energy efficiency aspects in cellular networks can significantly contribute to the reduction of greenhouse gas emissions and help to save the environment. The base station (BS) sleeping strategy has become a well-known ... -
Interference mitigation in femtocell networks with joint channel sensing and resource allocation
( IEEE , 2015 , Conference Paper)Joint channel sensing and resource allocation in femtocell networks is investigated. An approach consisting of using jointly a sensing module in addition to a normal femto module performing resource allocation simultaneously ... -
Exploiting multiple wireless interfaces in smartphones for traffic offloading
( IEEE , 2013 , Conference Paper)Smartphones are evolving at a fast rate in terms of their computational, storage, and communications capabilities. A high-end smartphone is equipped with multiple wireless interfaces with varying bit rates, energy consumption ... -
Heterogeneous LTE/802.11a mobile relays for data rate enhancement and energy-efficiency in high speed trains
( IEEE , 2012 , Conference Paper)Performance enhancements of cellular networks for passengers in high speed railway systems are investigated. Relays placed on top of each train car are proposed. These relays communicate with the cellular base station (BS) ... -
A game theoretic framework for energy efficient deployment and operation of heterogeneous LTE networks
( IEEE , 2013 , Conference Paper)In this paper, a game theoretical framework for energy efficient operation of heterogeneous LTE cellular networks is proposed. Within this framework, two game theoretic concepts are studied and analyzed. The first approach ... -
Transmit Power Minimization and Base Station Planning for High-Speed Trains with Multiple Moving Relays in OFDMA Systems
( IEEE , 2017 , Conference Paper)A high-speed railway system equipped with moving relay stations placed on the middle of the ceiling of each train wagon is investigated. The users inside the train are served in two hops via orthogonal frequency-division ... -
On the capacity and spatial fairness trade-off in planning sectorization and frequency reuse
( IEEE , 2013 , Conference Paper)The intrinsic trade-off between the capacity and Quality of Service (QoS) has long been subject of investigation in the design of MAC layer scheduling, power and call admission control mechanisms. However, from prospective ... -
Optimized LTE Cell Planning with Varying Spatial and Temporal User Densities
( IEEE , 2016 , Conference Paper)Base station (BS) deployment in cellular networks is one of the fundamental problems in network design. This paper proposes a novel method for the cell planning problem for fourth-generation (4G) cellular networks using ... -
A game theoretical approach for cooperative environmentally friendly cellular networks powered by the smart grid
( IEEE , 2014 , Conference Paper)This paper investigates the collaboration between multiple mobile operators to optimize the energy efficiency of cellular networks, maximize their profits or achieve or tradeoff between both objectives. Mobile operators ... -
Green Virtualization for Multiple Collaborative Cellular Operators
( IEEE , 2017 , Conference Paper)This paper proposes and investigates a green virtualization framework for infrastructure sharing among multiple cellular operators whose networks are powered by a combination of conventional and renewable sources of energy. ... -
A generic simulation-based dimensioning approach for planning heterogeneous LTE cellular networks
( IEEE , 2014 , Conference Paper)This paper presents a generic approach for dimensioning LTE/LTE-A cellular networks. Dimensioning is the first step of cellular network planning that determines the approximate number of base stations (BSs) needed to cover ... -
A mathematical modeling approach and a novel solution for sector azimuth angle planning
( IEEE , 2014 , Conference Paper)State of the art planning tools rely on intricate simulation models and metaheuristic approaches to determine the optimal azimuth angle of each sector in a system. The process is highly time consuming and the quality of ... -
Achieving green LTE-A HetNets with D2D traffic offload and renewable energy powered small cell BSS
( IEEE , 2014 , Conference Paper)Energy aware coordination between mobile devices and the cellular network infrastructure is studied. The objective is to rely on both device-to-device (D2D) communications and any small cell base stations (BSs) that can ... -
LTE radio network planning with HetNets: BS placement optimization using simulated annealing
( IEEE , 2014 , Conference Paper)In this paper, the optimization of base station (BS) deployment is investigated. After determining an approximate number of required BSs to cover an area of interest, the positions of these BSs are determined using the ... -
Green operation of LTE-A femtocell networks benefiting from centralized control
( IEEE , 2015 , Conference Paper)Green operation of a specific category of femtocell networks, where a central controller can control the network within the premises of a campus or building, is investigated. An energy efficient approach for switching off ... -
Empirical evaluation of acoustical signals for leakage detection in underground plastic pipes
( IEEE , 2014 , Conference Paper)In this paper, an empirical evaluation of acoustical signals for leakage detection and quantification in underground plastic pipes for main water distribution networks is presented. Several experiments have been carried ... -
Optimized smart grid energy procurement for LTE networks using evolutionary algorithms
( IEEE , 2014 , Article)Energy efficiency aspects in cellular networks can contribute significantly to reducing worldwide greenhouse gas emissions. The base station (BS) sleeping strategy has become a well-known technique to achieve energy savings ...