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Thèses sur le sujet « Dense networks »

Auteur : Grafiati

Publié le 25 janvier 2025

Mis à jour le 31 juillet 2025

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1

Bulashenko, A. V., and I. V. Zabegaloff. "5G ultra dense networks." Thesis, Sumy State University, 2017. http://essuir.sumdu.edu.ua/handle/123456789/66962.

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The traffic demands predicted by 2030 are up to 10,000 times greater than in 2010 and end-service users will need to support 100 Mbps. One of the key developments that will provide this demand is the deployment of very dense and multi layered networks.

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Hettinger, Christopher James. "Hyperparameters for Dense Neural Networks." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7531.

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Neural networks can perform an incredible array of complex tasks, but successfully training a network is difficult because it requires us to minimize a function about which we know very little. In practice, developing a good model requires both intuition and a lot of guess-and-check. In this dissertation, we study a type of fully-connected neural network that improves on standard rectifier networks while retaining their useful properties. We then examine this type of network and its loss function from a probabilistic perspective. This analysis leads to a new rule for parameter initialization a

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Sharma, Sachin. "Integrated Backhaul Management for Ultra-Dense Network Deployment." Thesis, KTH, Kommunikationssystem, CoS, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-159447.

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Mobile data traffic is expected to increase substantially in the coming years, with data rates 1000 times higher by 2020, having media and content as the main drivers together with a plethora of new end-user services that will challenge existing networks. Concepts and visions associated with the ICT evolution like the network society, 50 billion connected devices, Industrial Internet, Tactile Internet, etc., exemplifies the range of new services that the networks will have to handle. These new services impose extreme requirement to the network like high capacity, low latency, reliability, secu

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Bansal, Tarun. "Network-Centric Mechanisms for Performance Improvement in Dense Wireless Networks." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397749798.

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Baudin, Émilie. "Raptor Codes for Super-Dense Networks." Thesis, KTH, Signalbehandling, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-140523.

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In this project, we investigate the performance of Raptor codes as candidatesfor channel coding for the wireless communication between access nodes.Very high data-rates are used, and processing uses more resources than transmission.Therefore, we need fast encoding and decoding algorithms for thechannel coding. Raptor codes have linear encoding and decoding times, andcan have very small overhead if they are properly designed. Hence, they arepossible candidates. We have implemented an encoding and decoding algorithm for Raptorcodes, as well as an environment for simulation. The system requiremen

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Peng, Jixian, and 彭继娴. "Macroscopic characteristics of dense road networks." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/195994.

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In the continuum modeling of traffic networks, a macroscopic cost-flow function (MCF) and macroscopic fundamental diagram (MFD) can be used to represent the fundamental relationships between traffic quantities such as speed, flow, and density. The MCF governs the steady-state cost-flow relationship, whereas the MFD represents the instantaneous inter-relationship between speed, flow, and density of traffic streams. This thesis explores the influence of network topologies on the MCF and MFD. The Hong Kong road system is divided into unit-sized road networks with various physical characteristics

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Cortes-Pena, Luis Miguel. "Optimizing dense wireless networks of MIMO links." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52254.

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Wireless communication systems have exploded in popularity over the past few decades. Due to their popularity, the demand for higher data rates by the users, and the high cost of wireless spectrum, wireless providers are actively seeking ways to improve the spectral efficiency of their networks. One promising technique to improve spectral efficiency is to equip the wireless devices with multiple antennas. If both the transmitter and receiver of a link are equipped with multiple antennas, they form a multiple-input multiple-output (MIMO) link. The multiple antennas at the nodes provide degrees

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Papadopoulos, Aris. "Energy-efficient routing for dense wireless sensor networks." Thesis, Imperial College London, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540663.

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Giménez, Colás Sonia. "Ultra Dense Networks Deployment for beyond 2020 Technologies." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/86204.

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A new communication paradigm is foreseen for beyond 2020 society, due to the emergence of new broadband services and the Internet of Things era. The set of requirements imposed by these new applications is large and diverse, aiming to provide a ubiquitous broadband connectivity. Research community has been working in the last decade towards the definition of the 5G mobile wireless networks that will provide the proper mechanisms to reach these challenging requirements. In this framework, three key research directions have been identified for the improvement of capacity in 5G: the increase of t

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Wambi, Paul James. "Efficient energy management in ultra-dense wireless networks." Master's thesis, Faculty of Engineering and the Built Environment, 2019. http://hdl.handle.net/11427/30999.

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The increase in demand for more network capacity has led to the evolution of wireless networks from being largely Heterogeneous (Het-Nets) to the now existing Ultra-dense (UDNs). In UDNs, small cells are densely deployed with the goal of shortening the physical distance between the base stations (BSs) and the UEs, so as to support more user equipment (UEs) at peak times while ensuring high data rates. Compared to Het-Nets, Ultra-dense networks (UDNs) have many advantages. These include, more network capacity, higher flexibility to routine configurations, and more suitability to achieve load-ba

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11

Qiao, Jie. "Dense wavelength division multiplexing (DWDM) for optical networks." Access restricted to users with UT Austin EID, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3035169.

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12

Poirot, Valentin. "Energy-Efficient Multi-Connectivity for Ultra-Dense Networks." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65386.

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In 5G systems, two radio air interfaces, evolved LTE and New Radio (NR), will coexist. By using millimeter waves, NR will provide high throughputs, but the higher frequencies will also lead to increased losses and a worse coverage. Multi-connectivity is therefore envisioned as a way to tackle these effects by connecting to multiple base stations simultaneously, allowing users to benefit from both air interfaces’ advantages. In this thesis, we investigate how multi-connectivity can be used efficiently in ultra-dense networks, a new paradigm in which the number of access nodes exceeds the number

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Abdallah, Mohamed Mahmoud. "Beamforming algorithms for information relaying in dense wireless networks." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3424.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2006.<br>Thesis research directed by: Electrical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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Wang, Mengjiao. "Interference characteristics and Capacity in Ultra-Dense Wireless Networks." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119788.

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Because of the rapid improvement of wireless communication, the requirement for data traffic is increasing faster and faster. How to provide enough service for the increasing user amount is a problem while designing the wireless systems. Making the wireless network more density seems to be an obvious solution. But more base stations means more cost, to study if these cost is helpful for improving communication quality is the mean direction of our study. In the study, functions that describe relationships between system performance and network size are monitoring in terms of average SINR, avera

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Jafari, Amir Hossein. "Dense small cell networks for next generation wireless systems." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/20644/.

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Afolalu, Oladele Felix. "Inter-cell interference coordination in 5G ultra-dense networks." Doctoral thesis, Faculty of Engineering and the Built Environment, 2021. http://hdl.handle.net/11427/33607.

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The exponentially increasing demand for mobile broadband communications has led to the dense deployment of cellular networks with aggressive frequency reuse patterns. The future Fifth Generation (5G) networks are expected to overcome capacity and throughput challenges by adopting a multi-tier architecture where several low-power Base Stations (BSs) are deployed within the coverage area of the macro cell. Hence, Inter-Cell Interference (ICI) caused by the simultaneous usage of the same spectrum in different cells creates severe problems. ICI reduces system throughput and network capacity, and h

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Lagén, Morancho Sandra. "Coordination strategies for interference management in MIMO dense cellular networks." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/404540.

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The envisioned rapid and exponential increase of wireless data traffic demand in the next years imposes rethinking current cellular networks due to the available spectrum scarcity. In this regard, 3 main drivers are considered to increase the capacity of today's most advanced (4G) and future (5G and beyond) cellular networks: use more bandwidth (more Hz) through spectral aggregation, enhance the spectral efficiency per base station (BS) (more bits/s/Hz/BS) by using multi-antenna (i.e. MIMO) systems, and increase the density of BSs (more BSs/km2) through a dense and heterogeneous deployment. We

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Emhemed, Abdullah. "Enhancing transient performance of microgeneration-dense low voltage distribution networks." Thesis, University of Strathclyde, 2010. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=14351.

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Zheng, Hui. "Performance analysis of indoor wireless communications in dense cellular networks." Thesis, University of Sheffield, 2019. http://etheses.whiterose.ac.uk/22997/.

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The current decades have witnessed the explosive increase of traffic-data demand. It is predicted that indoor wireless communications will be one of the fastest growing markets, since the vast majority (over 80%) of data demand occurs in indoors. Facing such a huge data demand, the dense deployment of small cells (SCs) in indoor environments is boosted, which brings breakthroughs of throughput for in-building communications. However, the densification of indoor small-cell (SC) networks also poses new challenges, such as complex propagating environments, severe blockage effects and short link d

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Al, Mawla Carole. "Enhancing routing protocols in dense nanonetworks." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCD033.

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Avec le développement rapide des nanoréseaux électromagnétiques denses, il existe un besoin urgent des protocoles de routage spécialisés capables de relever les défis uniques de ces environnements ultra-denses. Les dispositifs à l’échelle nanométrique offrent une bande passante élevée et sont confrontés à des complexités de communication importantes.Cette thèse aborde le manque de protocoles de routage viables pour les nanoréseaux denses en développant et en évaluant un nouvel algorithme spécifiquement conçu pour ce contexte. Une contribution clé est l’introduction du mécanisme EIDA (Equitable

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Akanbi, Oladeji Bamidele. "Bi-directional Dense Wavelength Division Multiplexed Systems for Broadband Access Networks." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/13964.

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Dense wavelength division multiplexing (DWDM) is becoming the technology of choice for meeting the increasing bandwidth demands in optical networks. DWDM has been used to increase the capacity of long-haul optical transport systems. Efforts are being made to move DWDM into the broadband access network serving residential and business subscribers. First, a new centralized DWDM PON scheme is demonstrated for bi-directional upstream and downstream transmissions. The proposed DWDM PON scheme is implemented using optical carrier suppression and separation (OCSS) technology to generate a wavelengt

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22

Dräxler, Martin [Verfasser]. "Resource allocation and scheduling in dense mobile access networks / Martin Dräxler." Paderborn : Universitätsbibliothek, 2015. http://d-nb.info/1072683490/34.

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Zhang, Jue. "Coordinated Multipoint Schemes with Suitable Cooperation Thresholds for Ultra Dense Networks." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-179050.

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Both data traffic and number of subscriptions have enormously increased inmobile network in recent years. Moreover, there will be an even faster growthin the future. A promising way to satisfy a significantly increasing demand infuture radio access network is by using so called Ultra Dense Networks (UDNs)which deploy a large number of base stations compared to the number of activeusers.Radio spectrum is a finite resource and therefore has to be shared by multipleusers. This sharing of radio spectrum inevitably causes interference betweenthe users. In this study, the interference management per

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Moghtasad-Azar, Khosro. "Surface deformation analysis of GPS dense networks based on intrinsic approach." [S.l. : s.n.], 2007. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-29769.

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Saeidian, Sara. "Deep Reinforcement Learning for Downlink Power Control in Dense 5G Networks." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-265675.

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This thesis examines the problem of downlink power allocation in dense 5Gnetworks, and attempts to develop a data-driven solution by employing deepreinforcement learning. We train and test multiple reinforcement learningagents using the deep Q-networks (DQN) algorithm, and the so-called Rainbowextensions of DQN. The performance of each agent is tested on 5G UrbanMacro simulation scenarios, and is benchmarked against a fixed power allocationapproach. Our test results show that the DQN models are successful atimproving data rates at cell-edge, while generalizing well to previously unseensimulati

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Mawlawi, Baher. "Random access for dense networks : Design and Analysis of Multiband CSMA/CA." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0112/document.

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Les protocoles de communications à accès aléatoires sont des candidats prometteurs pour les futurs systèmes de communications sans fil dédiés aux applications machine à machine (M2M). Ces méthodes d’accès sont généralement basées sur des techniques d'accès aléatoires mettant en œuvre des concepts simples de sondage de canal et de report de la transmission pour réduire les collisions, tout en évitant l'utilisation d'ordonnanceurs complexes. Parmi les différents protocoles, Carrier sense multiple access/collision avoidance with a Request-To-Send/Clear-To-Send (CSMA/CA-RTS/CTS) est un protocole q

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Yang, Yanpeng. "A study on the deployment and cooperative operation of ultra-dense networks." Licentiate thesis, KTH, Radio Systems Laboratory (RS Lab), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199892.

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The traffic volume in wireless communication has grown dramatically in the last decade and is predicted to keep increasing in the future. In this thesis, we focus on the densification dimension for capacity improvement, which has been proved to be the most effective in the past. The current gain of network densification mainly comes from cell splitting, thereby serving more user equipments (UEs) simultaneously. This trend will decelerate as base station (BS) density gets closer to or even surpass UE density which forms an ultra-dense network (UDN). Thus, it is crucial to understand the behavio

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Jamil, Imad. "Improving spatial reuse in future dense high efficiency Wireless Local Area Networks." Thesis, Rennes, INSA, 2015. http://www.theses.fr/2015ISAR0033/document.

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Malgré leur réussite remarquable, les premières versions des normes de réseaux locaux sans fil IEEE 802.11, IEEE 802. 11 a/b/g WLAN, sont caractérisées par une efficacité spectrale faible qui est devenue insuffisante pour satisfaire la croissance explosive de la demande de capacité et de couverture. Grâce aux progrès considérables dans le domaine des communications sans fil et l'utilisation de la bande de fréquence autour de 5 gigahertz le standard IEEE 802.11n et plus récemment 1'IEEE 802.11ac ont amélioré les débits offerts par la couche physique. Cela été possible grâce principalement à l'i

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Celik, Haris. "On the Performance of Dynamic TDD in Ultra-Dense Wireless Access Networks." Licentiate thesis, KTH, Radio Systems Laboratory (RS Lab), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214775.

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The appetite for wireless high-data rate services is expected to continue for many years to come and drive the need for more capacity. Ultra-dense networks (UDNs) represent a paradigm shift where each base station (BS) serves only a few user equipments (UEs). By most accounts, most of the traffic will be generated indoor and operate in time-division duplex (TDD). This thesis considers dynamic TDD which has shown to perform well indoor for fluctuating traffic where the shorter communication range enables similar transmit powers to be used in uplink and downlink, but also generates potentially m

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SANTAROMITA, Giuseppe. "Exploiting physical layer flexibility for high-capacity and ultra-dense wireless networks." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/395494.

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Bencin, Heidi L. "Challenges of Conserving a Wide-ranging Carnivore in Areas with Dense Road Networks." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1543861790637513.

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Akl, Ahmed. "Design and evaluation of wireless dense networks : application to in-flight entertainment systems." Toulouse 3, 2011. http://thesesups.ups-tlse.fr/1352/.

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Le réseau sans fil est l'un des domaines de réseautage les plus prometteurs avec des caractéristiques uniques qui peuvent fournir la connectivité dans les situations où il est difficile d'utiliser un réseau filaire, ou lorsque la mobilité des nœuds est nécessaire. Cependant, le milieu de travail impose généralement diverses contraintes, où les appareils sans fil font face à différents défis lors du partage des moyens de communication. De plus, le problème s'aggrave avec l'augmentation du nombre de nœuds. Différentes solutions ont été introduites pour faire face aux réseaux très denses. D'autre

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Merwaday, Arvind. "Stochastic Geometry Based Analysis of Capacity, Mobility and Energy Efficiency for Dense Heterogeneous Networks." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2480.

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In recent years, the increase in the population of mobile users and the advances in computational capabilities of mobile devices have led to an exponentially increasing traffic load on the wireless networks. This trend is foreseen to continue in the future due to the emerging applications such as cellular Internet of things (IoT) and machine type communications (MTC). Since the spectrum resources are limited, the only promising way to keep pace with the future demand is through aggressive spatial reuse of the available spectrum which can be realized in the networks through dense deployment of

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Saber, Khamooshi. "Impact of Three-Dimensional Indoor Environment on the Performance of Ultra-Dense Wireless Networks." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-153773.

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With rapidly increasing traffic demand, it is expected that ultra-dense wireless access networks are deployed in many buildings in a near future. Performance evaluation of in-building ultra-dens networks is thus of profound importance. Buildings consist of walls and floors in three-dimensional environments, and the walls and floors attenuate the radio propagation. However, previous studies on the performance evaluation of wireless networks have mainly focused on open areas with an assumption of two-dimensional environments. In this thesis, we investigate the effects of walls and floors on the

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El, Sahn Ziad. "Smooth upgrade of existing ftth access networks: sac-ocdma and dense SS-WDM solutions." Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/27275/27275.pdf.

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Elsahn, Ziad A. "Smooth upgrade of existing FTTH access networks : SAC-OCDMA and dense SS-WDM solutions." Doctoral thesis, Université Laval, 2010. http://hdl.handle.net/20.500.11794/22330.

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Fernando, Baminahennadige Rasitha Dilanjana Xavier. "Low Power, Dense Circuit Architectures and System Designs for Neural Networks using Emerging Memristors." University of Dayton / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1625595485590874.

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Moghtasad-Azar, Khosro. "Surface deformation analysis of dense GPS networks based on intrinsic geometry : deterministic and stochastic aspects." kostenfrei, 2007. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-33534.

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INCERTI, GABRIELE. "All optical 2R regeneration systems for broadband agile dense wavelength division multiplexing transparent optical networks." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2010. http://hdl.handle.net/2108/1422.

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Recentemente è stata notata una crescita dei servizi multimediali richiesti dagli utenti finali; in tal modo numerose soluzioni sono state implementate per garantire elevati bit rate e qualità del servizio necessari per questo tipo di applicazioni. Le reti completamente ottiche sono state stese in molte nazioni (Giappone, Corea, Cina) per fornire servizi a banda larga fino a casa dell'utente. Conseguentemente, sono richiesti dispositivi in grado di operare nel dominio ottico in modo tale da evitare il noto “collo di bottiglia” derivante dalle conversioni di formato O/E/O (ottico/elettrico/ott

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Silva, Allende Alonso Ariel. "Design and Optimization of Wireless Networks for Large Populations." Phd thesis, Supélec, 2010. http://tel.archives-ouvertes.fr/tel-00808021.

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The growing number of wireless devices and wireless systems present many challenges on the design and operation of these networks. We focus on massively dense ad hoc networks and cellular systems. We use the continuum modeling approach, useful for the initial phase of deployment and to analyze broad-scale regional studies of the network. We study the routing problem in massively dense ad hoc networks, and similar to the work of Nash, and Wardrop, we define two principles of network optimization: user- and system-optimization. We show that the optimality conditions of an appropriately construct

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Khan, Komal Saif Ullah. "Cooperative Content Caching for 5G and Beyond Mobile Wireless Networks." Thesis, The University of Sydney, 2020. https://hdl.handle.net/2123/22970.

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: The increased interest in traffic-intensive applications such as High Definition (HD) video, augmented reality, and 3-D visualization is expected to result in higher network traffic. Such higher-fold traffic growth requires a significant paradigm shift in implementing upcoming 5G technology so that the user requests can be accommodated at the core network without causing a bottleneck. Emerging mobile content caching techniques can efficiently relieve overloaded network by caching popular content at intermediate nodes and user devices. Its efficacy, however, lies in the intelligent caching of

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Nikzad, Dehaji Mohammad. "Structural Improvements of Convolutional Neural Networks." Thesis, Griffith University, 2021. http://hdl.handle.net/10072/410448.

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Over the last decade, deep learning has demonstrated outstanding performance in almost every application domain. Among different types of deep frameworks, convolutional neural networks (CNNs), inspired by the biological process of the visual system, can learn to extract discriminative features from raw inputs without any prior manipulation. However, efficient information circulation and the ability to explore effective new features are still two key and challenging factors for a successful deep neural network. In this thesis, we aim at presenting novel structural improvements of the CNN framew

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Jarrar, Majed. "Radio Over Fibre Passive Optical Network Integration for The Smart Grid." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32779.

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During the last three decades, the significant increase in electricity demand, and its consequences, has appeared as a serious concern for the utility companies, but no major changes have been applied to the conventional power grid infrastructure. Recently, researchers have identified efficient control and power distribution mechanisms as the immediate challenges for conventional power grids. The next step for conventional power grid towards the Smart Grid is to provide energy efficiency management along with higher reliability via smart services, in which the application of Information and Co

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Maamoun, Khaled M. "Deploying Monitoring Trails for Fault Localization in All-optical Networks and Radio-over-Fiber Passive Optical Networks." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23195.

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Fault localization is the process of realizing the true source of a failure from a set of collected failure notifications. Isolating failure recovery within the network optical domain is necessary to resolve alarm storm problems. The introduction of the monitoring trail (m-trail) has been proven to deliver better performance by employing monitoring resources in a form of optical trails - a monitoring framework that generalizes all the previously reported counterparts. In this dissertation, the m-trail design is explored and a focus is given to the analysis on using m-trails with established li

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Kuai, Wenming. "Neural networks constructed using families of dense subsets of L[subscript]2(R) functions and their capabilities in efficient and flexible training." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/29587.

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Vu, K. (Kien). "Integrated access-backhaul for 5G wireless networks." Doctoral thesis, Oulun yliopisto, 2019. http://urn.fi/urn:isbn:9789526222431.

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Abstract With the unprecedented growth in mobile data traffic and network densification, the emerging fifth-generation (5G) wireless network warrants a paradigm shift with respect to system design and technological enablers. In this regard, the prime motivation of this thesis is to propose an integrated access-backhaul (IAB) framework to dynamically schedule users, while efficiently providing a wireless backhaul to dense small cells and mitigating interference. In addition, joint resource allocation and interference mitigation solutions are proposed for two-hop and multi-hop self-backhauled mi

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Pawlowski, Filip igor. "High-performance dense tensor and sparse matrix kernels for machine learning." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEN081.

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Dans cette thèse, nous développons des algorithmes à haute performance pour certains calculs impliquant des tenseurs denses et des matrices éparses. Nous abordons les opérations du noyau qui sont utiles pour les tâches d'apprentissage de la machine, telles que l'inférence avec les réseaux neuronaux profonds. Nous développons des structures de données et des techniques pour réduire l'utilisation de la mémoire, pour améliorer la localisation des données et donc pour améliorer la réutilisation du cache des opérations du noyau. Nous concevons des algorithmes parallèles à mémoire séquentielle et à

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Yassin, Mohamad. "Inter-cell interference coordination in wireless networks." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S106/document.

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Grâce aux avancées technologiques dans le domaine des réseaux cellulaires et des équipements mobiles, le nombre d'applications multimédia à haut débit dans les réseaux mobiles ne cesse d'augmenter. On prévoit que le trafic de données dans les réseaux mobiles en 2017 sera 13 fois plus important que celui en 2012. Pour satisfaire aux besoins des équipements mobiles, de nouvelles approches pour la gestion des ressources radio et des puissances de transmission sont requises.Dans le cadre de cette thèse, on s'intéresse à proposer des solutions pour remédier aux problèmes des interférences intercell

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Sariyuce, Ahmet Erdem. "Fast Algorithms for Large-Scale Network Analytics." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429825578.

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Subtil, João Miguel Borges. "Efficient Communication in Dense Networks." Master's thesis, 2017. http://hdl.handle.net/10316/83270.

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Dissertação de Mestrado em Engenharia Informática apresentada à Faculdade de Ciências e Tecnologia<br>Nos últimos anos o número de redes de Internet das Coisas tem aumentado. Para suportar redes de 5ª Geração (5G) redes altamente densas de larga escala vão ter de ser implementadas. Essas redes vão conter um número enorme de sensores a pilhas, detectando evento e reenviando mensagens em topologias dinâmicas (estrela, malha, ad-hoc) Estas redes altamente densas podem levar um nó a esgotar os seu recursos rapidamente. Portanto essas redes terão de ser tão eficientes quanto possível para opera

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