Gotowe bibliografie tematyczne / 802.11 Wireless communication

Gotowa bibliografia na temat „802.11 Wireless communication”

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Data publikacji: 25 maja 2024

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Artykuły w czasopismach na temat "802.11 Wireless communication"

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Feng Zhang, T. C. Todd, Dongmei Zhao i V. Kezys. "Power saving access points for IEEE 802-11 wireless network infrastructure". IEEE Transactions on Mobile Computing 5, nr 2 (luty 2006): 144–56. http://dx.doi.org/10.1109/tmc.2006.25.

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SinghYadav, Brijesh, i Parul Yadav. "Impact of New Highly Secure Scheme on Wireless Network 802. 11 Performance". International Journal of Computer Applications 51, nr 7 (30.08.2012): 31–36. http://dx.doi.org/10.5120/8056-1403.

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A.Mohamed, M., W. B. Bahget i S. S Mohamed. "A Performance Evaluation for Rate Adaptation Algorithms in IEEE 802. 11 Wireless Networks". International Journal of Computer Applications 99, nr 4 (20.08.2014): 54–59. http://dx.doi.org/10.5120/17365-7884.

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Fettouh, Abdessadeq, Najib El Kamoun i Abdelaziz El Fazziki. "Performance Analysis of Ubiquitous Wireless Connectivity in a 3G/IEEE 802. 11 Integrated Network". International Journal of Computer Applications 59, nr 10 (18.12.2012): 13–18. http://dx.doi.org/10.5120/9583-4061.

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Li, Xinran. "Review of wireless communication transmission technology". Applied and Computational Engineering 11, nr 1 (25.09.2023): 24–28. http://dx.doi.org/10.54254/2755-2721/11/20230199.

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With the advancement of modern science and technology, wireless communication technology has grown rapidly. A number of common standards for wireless data transmission have emerged, primarily for long-distance and short-range wireless communication. This paper compares several common wireless communication transmission technologies, including satellite communication, Bluetooth, WiFi, NFC, etc. Wireless communication technology has now entered the 5G stage. From the previous SMS to the current video conference, the transmission rate and transmission accuracy have been greatly improved. Wi-Fi facilities everywhere in the city, Bluetooth transmission, mobile phone NFC payment, etc. are convenient and improve people's lives. Wireless communication technology also has many applications, such as 5G technology, Internet of Things technology, and the development of artificial intelligence technology.
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Liu, Chengyin, Yi Zhang, Hao Chen, Jiande Wu i Xiangning He. "Orthogonal-Frequency Simultaneous Wireless Power and Data Transfer for High-Power Wireless EV Charging". Energies 17, nr 8 (12.04.2024): 1851. http://dx.doi.org/10.3390/en17081851.

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In a simultaneous wireless power and data transfer (SWPDT) system using common coils, achieving high-speed communication in high-power wireless charging systems is challenging due to power transfer interference on communication. Based on high-frequency data carrier-based SWPDT (HFDC-SWPDT) technology, this paper proposes an orthogonal-frequency simultaneous wireless power and data transfer (OF-SWPDT) method to minimize interference where the data carrier frequency is orthogonal to the power carrier frequency and its harmonics. In addition, a guard band is inserted between the spectra of power harmonics and data in order to further separate the power and data spectra. Thus, a high-power, high-speed SWPDT system is achieved. Finally, an 11 kW prototype with 64.125 kbps full-duplex communication is developed to validate the proposed method.
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Din, Zia Ud, i Leonhard E. Bernold. "Experimental study of signal behavior for wireless communication in construction". Construction Innovation 17, nr 4 (20.10.2017): 475–91. http://dx.doi.org/10.1108/ci-11-2016-0061.

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Purpose The purpose of this study is to understand the effects of building components of a growing concrete structure and different building materials such as glass and steel on Wi-Fi signals propagation in a construction site. Wireless local area networks are considered effective tools to link the islands-of-communication in construction. Still, designing a Wi-Fi network that can grow with a new construction requires that one understands the performance of propagation of electromagnetic signals transmitted at 2.4 GHz. Design/methodology/approach This paper reviews the theoretical behavior of electromagnetic signals when signal attenuation is caused by various construction materials changing their strengths, directions and possibly leading to total absorption. The authors used a typical building layout to conduct experimental work to measure the effect of common building features and communication technologies on signal strengths. Findings The measured data not only confirmed the theory-based predictions but also demonstrated the complexity of predicting signal propagation when obstructions inhibit the line-of-sight “travel” of electromagnetic signals. Originality/value Different to other papers, the experiments were conducted outside a concrete building mimicking the situation where the transmitter is set up at the site office.
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Angalaeswari, T., i M. Logeswari. "Machine Learning Techniques for 5g And Beyond". Data Analytics and Artificial Intelligence 3, nr 2 (1.02.2023): 54–58. http://dx.doi.org/10.46632/daai/3/2/11.

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In today's world, wireless communication systems are extremely important for applications related to entertainment, business, commerce, health and safety. These systems continue to advance from generation to generation and at this time, fifth generation (5G) wireless networks are being deployed globally the globe. Beyond 5G wireless systems, which will represent the sixth generation (6G) of the evolution, are already being discussed in academia and industry. The application of artificial intelligence (AI) and machine learning (ML) to such wireless networks will be one of the primary and essential elements of 6G systems. According to our present understanding of wireless technologies up to 5G, every component and building block of a wireless system, such as the physical, network, and application layers, will involve one or more of them.
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Ahmadi, Zahra, Mehdi Salkhordeh Haghighi i Zohreh Validi. "A Novel Approach For Energy Optimization In Distributed Databases in Wireless Network Applications". Journal of Research in Science, Engineering and Technology 8, nr 2 (29.09.2020): 7–11. http://dx.doi.org/10.24200/jrset.vol8iss2pp7-11.

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Energy consumption is a significant factor in wireless networks with battery-powered nodes and transceivers as a dominant energy consumer .Also mutual exclusion is a fundamental problem in distributed systems.“Mutual exclusion” allows only one process at a time to access the shared resource and the others have to be locked and wait for their turns.. Retaining mutual exclusion, is proposed as a solution to guarantee the correctness of read/written information from/in the shared resource or critical sections (CS).Wireless Network is an unstable network formed dynamically by a connection of wireless mobile nodes without the use of an existing network substructure. Since energy consumption during communication is a major depletion parameter the number of communication must be reduced as much as possible to achieve extended battery life. Since battery technology does not grow as rapidly as CPU or memory does so there is a strong need for the presence of protocols which are as energy efficient as effective.In this paper we present a new fully distributed token–based mutual-exclusion algorithm for clustered Mobile ad-hoc network with message count reduction purpose which eventuates to power optimization. Therefore we use Raymond's algorithm (which is well-known in stepping down message complexity) within the clusters and perpetual Mobility of token (that is so efficient in high load network such as Manet's) between the clusters.
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Khalid Nghaimesh, Abeer, i Ali Khalid Jassim. "TRIPLE-BAND CIRCULAR PATCH MICROSTRIP ANTENNA FOR WIRELESS COMMUNICATION". Journal of Engineering and Sustainable Development 28, nr 1 (1.01.2024): 64–74. http://dx.doi.org/10.31272/jeasd.28.1.5.

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In this article, a triple-band patch antenna using a circular patch microstrip antenna is constructed with a low-profile patch antenna using a 1.5 mm thick FR4 substrate (εr= 4.3). As mobile devices like smartphones and laptops become more common, the usage of tiny, triple-band antennas has also become more common. The objective of this research is to design a circular patch antenna with a 3–11 GHz dipole-like radiation pattern, which may be used for industrial, scientific, and medical reasons. For the suggested triple-band antenna design, the slotted radiator with six arches and the reduction of the ground plane are among the components. In addition, the standard 50 Ω RF transmission line stimulates the patch antenna; this transmission line is attached to the microstrip line by an impedance-compliant SMA connection. Data from the experiments are obtained, evaluated, and compared; to the patch's surface current distributions, gain, and radiation patterns. According to the measurements, S11 has an impedance bandwidth in the 5.5 GHz band of less than -10 dB, 6.6 GHz band, and 10.4 GHz band at all frequencies. The superb radiation pattern performance, relatively consistent gain throughout the bands, and practical bandwidths of this antenna make it a good choice for C-band and dual X-band applications.
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Rozprawy doktorskie na temat "802.11 Wireless communication"

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Manshaei, Mohammad Hossein. "Cross layer interactions for adaptive communications in IEEE 802. 11 wireless LANs". Nice, 2005. http://www.theses.fr/2005NICE4105.

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Cette thèse a pour objectif l´étude des mécanismes d´interaction inter-couche et leurs applications pour des algorithmes adaptatifs pour contrôler les paramètres de transmission. Après une description rapide des protocoles des couches liaison et physiques du standard IEEE 802. 11, nous présentons une analyse de performance des modes de transmission spécifiés par les normes 802. 11a/b. La deuxième contribution de cette thèse porte sur la modélisation des réseaux 802. 11. Nous proposons un modèle analytique qui prend en compte la position des terminaux radio par rapport au point d´accès afin d´évaluer les performances de la couche MAC. Nous proposons ensuite de nouveaux mécanismes de sélection du débit de transmission physique. Nous avons élaboré l´algorithme AARF, basé sur l´algorithme ARF, qui s´intéresse à la classe des terminaux dits à faible latence et offre des services d´adaptation à court et à long terme. Un autre algorithme basé sur les mêmes idées que celles développées pour AARF, mais conçu pour fonctionner avec des systèmes à grande latence, a été implanté et expérimenté sur des terminaux à base du processeur Atheros. Enfin, nous avons élaboré un troisième algorithme de contrôle dynamique du mode de transmission en boucle fermée appelé CLARA qui est compatible avec les standards 802. 11a/b/g. La dernière contribution de cette thèse porte sur l´optimisation de la transmission de flots multimédias temps réel sur des réseaux 802. 11. Nous présentons MORSA, un mécanisme d´optimisation inter-couche efficace qui permet de sélectionner le mode de transmission à utiliser en fonction de l´état du canal de transmission et des caractéristiques de l´application
The main goal of this thesis is to propose efficient adaptive communication mechanisms using cross layer interactions in IEEE 802. 11 WLANs. First, we present a detailed performance evaluation of 802. 11a/b PHY layer transmission modes. The second contribution of the thesis concerns 802. 11 MAC/PHY layers modelling. An analytical model that accounts for the positions of stations with respect to the access point while evaluating the performance of 802. 11 MAC layer, has been proposed. The third contribution of the thesis concerns rate adaptation mechanisms and especially cross layer algorithms between MAC and PHY layers. An adaptive rate selection algorithm, called AARF for low latency systems that improves upon ARF to provide both short-term and long-term adaptation has been proposed. In this field, we also present a new rate adaptation algorithm designed for high latency systems named AMRR that has been implemented and evaluated on an AR5212-based device. We then propose a closed-loop, dynamic rate selection algorithm that can be implemented in all 802. 11a/b/g compliant wireless local area networks. This algorithm called CLARA is a culmination of the best attributes of the transmitter-based ARF and the RBAR control mechanisms with additional practical features to facilitate multipath fading channel sensing and feedback control signalling. The last contribution of the thesis is on the optimization of real time multimedia transmission over 802. 11 based networks. In particular, we propose a simple and efficient cross layer mechanism, called MORSA, for dynamically selecting the transmission mode considering both the channel conditions and characteristics of the media
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Dhoutaut, Dominique. "Etude du standard IEEE 802. 11 dans le cadre des réseaux ad hoc". Lyon, INSA, 2003. http://theses.insa-lyon.fr/publication/2003ISAL0094/these.pdf.

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Les réseaux ad hoc constitués de mobiles ne s'appuient sur aucune infrastructure fixe et s'auto-organisent au gré des mouvements. Dans ce domaine de recherche récent, la majeure partie de l'activité est tournée vers le routage. De part sa disponibilité commerciale et sa facilité d'utilisation, la norme IEEE 802. 11(Wi-Fi) est en général choisie comme support dans de nombreux travaux de recherche sur le routage. Mais 802. 11 n'a pas été conçue pour le contexte des réseaux multi-sauts et présente des limites que nous nous attachons à mettre en lumière. Par simulation puis par expérimentation réelle, nous soulevons un certain nombre de problèmes, allant de l'équité dans l'accès au canal aux problèmes de portée et d'impact de l'environnement. Grâce à une étude détaillée de ces divers phénomènes, cette thèse a un impact en particulier sur les protocoles de routage ad hoc et la manière dont ils sont élaborés, mais aussi sur d'autres protocoles de niveau supérieur, à commencer par TCP
Study of the IEEE 802. 11 standard un ad hoc networks context: from simulation to experimentation. The mobiles composing ad hoc networks do not rely on any fixed infrastructure and organise themselves depending on nodes movements. This research area is quite recent, and most of the work concerns routing. Because of its commercial availability and its ease of use, IEEE 802. 11 standard (Wi-Fi) is generally chosen to develop and test ad hoc routing protocols. But 802. 11 has not been originally designed for multi-hops networks and has limitations in this context that we intend to highlight. Using simulations then real world experimentations, we bring up many problems ranging from medium access equity to transmission range and environment impact. With its detailed study of these phenomena, this PhD has an impact in particular over ad hoc routing protocols and the way they are designed, but also over upper layers protocols, TCP being the first of them
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Fickel, Mark G., i Eric J. Bach. "An analysis of the feasibility and applicability of IEEE 802.X wireless mesh networks within the Global Information Grid". Thesis, Monterey California. Naval Postgraduate School, 2004. http://hdl.handle.net/10945/1462.

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This thesis analyzes the feasibility, functionality, efficacy and usability of IEEE 802.x wireless mesh networks in multiple DoD contexts. Through multiple field and lab experiments and hardware investigations, an assessment is performed on the realistic implementation issues of wireless mesh networks and their possible applications. A detailed examination is conducted of the variable elements, operational constraints, and possible decision points for developing a usable, robust, self-organizing, wireless mesh network that can be leveraged for maximum usability and shared situational awareness in network-centric operations. The research investigates the suitability of currently available COTS hardware and software wireless mesh networking components for geographically distributed networks. Additionally, a product-line software architecture and a common data interchange XML vocabulary are proposed as the enabling technology elements to carry application layer mesh forward for integration of collaborative sensor-decision maker adaptive networks within the Global Information Grid. The thesis includes the design and implementation of the first Naval Postgraduate School testbed for tactical level mesh networking with unmanned vehicles, unattended sensors, and warrior networking nodes. This thesis also lays the groundwork for further research into lower OSI-layer routing protocols for DoD mesh networks, development of mesh-aware applications, as well as a GIG-wide mesh network architecture.
Lieutenant Commander, Supply Corps, United States Navy
Lieutenant Commander, United States Navy
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Bach, Eric J. Fickel Mark G. "An analysis of the feasibility and applicability of IEEE 802.X wireless mesh networks within the Global Information Grid /". Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Sep%5FBach.pdf.

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Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, Sept. 2004.
Thesis advisor(s): Alexander Bordetsky. Includes bibliographical references (p. 81-91). Also available online.
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Davis, Joseph A. "An analysis of network and sensor performance within IEEE 802.x wireless MESH networks in the Tactical Network Topology (TNT) /". Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Mar%5FDavis.pdf.

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Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, March 2005.
Thesis Advisor(s): Alexander Bordetsky. Includes bibliographical references (p. 49-50). Also available online.
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Sarr, Cheikh. "De l'apport d'une évaluation précise des ressources pour la Qualité de Service des réseaux ad hoc basés sur IEEE 802. 11". Lyon, INSA, 2007. http://theses.insa-lyon.fr/publication/2007ISAL0046/these.pdf.

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L’essor des technologies sans fil offre aujourd’hui de nouvelles perspectives dans le domaine des télécommunications. L’évolution récente des moyens de communication sans fil permet la manipulation de l’information par des unités de calculs portables accédant au réseau via une interface de communication sans fil. Depuis quelques années, les réseaux ad hoc, réseaux sans fil ne possédant aucune infrastructure fixe dédiée à la gestion des communications, ont suscité un axe de recherche important. Les débits de ces réseaux sont actuellement tels que des applications contraignantes comme la diffusion de vidéos ou la téléphonie sur IP sont envisageables sur ces réseaux. La mise en place de qualité de service dans les réseaux ad hoc est donc une problématique clé. Pendant ma thèse, je me suis intéressé à l’évaluation des ressources disponibles dans les réseaux ad hoc. Cette problématique, trop souvent laissée de côté, est pourtant fondamentale si on veut pouvoir offrir des garanties aux applications de manière efficace. J’ai donc proposé une technique d’évaluation de la bande passante disponible qui présente de très bonnes performances et qui permet d’assurer avec précision les garanties demandées par les applications avec contraintes. A partir de cette estimation, je me suis intéressé à la cohabitation entre les flux QoS et les flux Best Effort, afin de pouvoir accepter le maximum de flux QoS d’une part et d’optimiser la gestion de la bande passante dans le réseau d’autre part. Enfin, cette estimation m’a aussi permis de proposer une évaluation fiable du délai moyen sur un chemin. Cette estimation peut être utilisée au sein d’un protocole de routage garantissant des délais moyen aux applications
Mobile Ad hoc Network (MANET) is an autonomous system of mobile nodes connected by wireless links. They require no fixed infrastructure such as base station to operate; therefore, it is an attractive networking option for connecting mobile devices quickly and spontaneously. The nodes themselves address topology changes due to the mobility, the arrival or the departure of nodes. Today, several applications general multimedia data or rely on the proper transmission of sensitive control traffic. These applications may benefit from a quality of service (QoS) support. Therefore, this field has been extensive/y studied and more and more QoS solutions are proposed for ad hoc networks. During my thesis, I focus on one of the fundamental resources, the bandwidth. Estimating the remaining bandwidth at a given time an in a given part of the network is tricky, as the medium is shared between close nodes in a wireless network. This implies that computation of the available bandwidth between two neighbor nodes requires identification of all the emitter's potential contenders and of all the receiver's potential jammers. I propose therefore a new technique to estimate residual bandwidth in ad hoc networks which present good performances. From this estimation, i have also developed a management scheme for QoS and Best Effort flows in order to increase the acceptance rate of QoS flows. Finally, we also compute an evaluation of end-to-end delay in these ad hoc networks
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Davis, Joseph A. Sr. "An analysis of network and sensor performance within IEEE 802.x wireless MESH networks in the Tactical Network Topology (TNT)". Thesis, Monterey California. Naval Postgraduate School, 2005. http://hdl.handle.net/10945/2297.

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The objective of this research is to analyze the network performance and sensor functionality, efficacy and usability of IEEE 802.x wireless MESH networks within a DoD Tactical network environment. Multiple sensor configurations operating with wireless MESH network technologies will be researched and analyzed for performance in expeditionary environment situations. Specifically, this thesis will attempt establish the foundation for the development of wireless MESH "network health" models by examining the performance of sensors operating within a MESH network and define which network performance metrics equate to good quality of service. This research will experiment with different application, sensor, and network configurations of currently available COTS components, such as, voice, video and data hardware. This thesis will lay the groundwork for wireless network MESH predictability, which will enable the optimal use of sensors within a tactical network environment.
Lieutenant Commander, United States Navy
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Aycan, Beyazit Esra. "Interference Alignment Techniques for Heterogeneous Wireless Networks". Thesis, Paris, CNAM, 2016. http://www.theses.fr/2016CNAM1058/document.

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Dans cette thèse, nous étudions les algorithmes d’alignement d’interférence dans les réseaux hétérogènes basés sur la sélection des flux. Tout d’abord, nous considérons différents scénarios de déploiement des pico-cellules dans un contexte de connaissance parfaite des canaux de transmission au niveau des émetteurs. Deux algorithmes sont proposés respectivement pour les réseaux totalement et partiellement connectés. Afin d’assurer une équité entre les liens, les algorithmes garantissent qu’au moins un flux de chaque lien émetteur/récepteur soit sélectionné. La séquence des flux est choisie parmi un ensemble qui contient les séquences les plus souvent sélectionnées en effectuant une recherche exhaustive. Ces algorithmes sont significativement moins complexes que la recherche exhaustive tout en ayant une performance proche de celle-ci. Après la sélection d’un flux, les interférences entre ce flux et les flux qui n’ont pas encore été sélectionnées sont alignées par projections orthogonales. Dans une deuxième partie de la thèse, l’impact de la connaissance partielle des canaux de transmission sur les algorithmes proposés est analysé. Il est montré que les interférences entre flux causent alors une forte dégradation des performances en raison des erreurs de quantification. Pour réduire cette dégradation, un nouvel algorithme est développé pour ce contexte. Finalement, des schémas d’allocation adaptative des bits pour les voies de retour sont proposés afin d’augmenter les performances des algorithmes précédents. Les performances de ces schémas et de ces algorithmes sont évaluées en considérant différents scénarios avec différentes topologies des pico-cellules. Nous avons montré que les algorithmes proposés pour le cas des transmissions avec voie de retour sont significativement plus robustes et plus performants que les algorithmes d’alignement d’interférence classiques
In this thesis, we study the stream selection based interference alignment (IA) algorithms, which can provide large multiplexing gain, to deal with the interference in the heterogeneous networks. Firstly, different deployment scenarios for the pico cells are investigated assuming perfect channel state information (CSI) at the transmitters.Two different stream selection IA algorithms are proposed for fully and partially connected interference networks and selecting at least one stream is guaranteed for each user. A stream sequence is selected among a predetermined set of sequences that mostly contribute to the sum-rate while performing an exhaustive search. In the proposed algorithms, the complexity of the exhaustive search is significantly decreased while keeping the performance relatively close. After selecting a stream, the interference generated between the selected and the unselected streams is aligned by orthogonal projections. Then, the influence of the imperfect CSI on the proposed algorithms is analyzed and it is observed that the intra-stream interference causes a significant degradation in the performance due to the quantization error. Therefore, we propose an algorithm for the limited feedback scheme. Finally, adaptive bit allocation schemes are presented to maximize the overall capacity for all the proposed algorithms. The performance evaluations are carried out considering different scenarios with different number and placements of pico cells. It is shown that the proposed algorithm for the limited feedback is more robust to channel imperfections compared to the existing IA algorithms
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Belghoul, Farouk. "Mécanismes de Gestion de Mobilité Généralisée dans un Système Hétérogène Fixe/Mobile". Phd thesis, Télécom ParisTech, 2005. http://pastel.archives-ouvertes.fr/pastel-00001320.

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Le support de la mobilité dans les protocoles réseaux existants est devenu primordial, à cause du nombre croissant d'utilisateurs de terminaux mobiles désirant garder une connexion constante au réseau, tout en se déplaçant librement à travers des segments de réseaux d'accès sans fil hétérogènes. Le protocole de routage dominant dans les architectures réseaux filaires est IP "Internet protocole". Ce protocole est en passe de dominer aussi le mode des réseaux sans fils. Ainsi, il est naturel d'introduire des mécanismes de gestion de mobilité basés sur IP, dont un processus de handover (passage d'une point d'accès radio à une autre point) efficace et flexible afin de garantir aux utilisateurs une qualité de service minimale de transmission des donnés. En effet, un handover inefficace génère de la latence, de la gigue et des pertes de paquets. La transmission des données est affectée et dégrade la qualité de services de l'application utilisant les services du réseau. Dans cette thèse, nous examinons et analysons d'abord la complexité et l'efficacité des principales techniques de handover et de gestion de mobilité basée sur IP. Les résultats de cette analyse seront ensuite exploités pour présenter finalement notre proposition de soft handover basé sur IPv6. Cette solution permettra l'extension de mobile IPv6 avec une gestion efficace, transparente et locale du multihoming. Bien sur la duplication des flux est bidirectionnel entre le réseau et le mobile et permet un changement de point d'accès au réseau sans perte de données. Nous analysons ensuite les performances de notre approche à travers des résultats de simulations. Ces simulations sont effectuées dans un simulateur développé par notre équipe nommé Gemini2. Cette partie inclut également une comparaison des performances par rapport au fast handover bicasting et Mobile IPv6 basique. Finalement, le dernier chapitre de la thèse inclut notre expérience de l'implémentation d'un prototype mobile multi interfaces et un testbed mobile IPv6 soft handover. Cette implémentation a comme but principal la validation de nos travaux. Ce banc de test nous permettra, en plus, d'analyser les performances du soft handover dans des conditions réelles et avec différents types d'applications et de flux multimédia.
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Aycan, Beyazit Esra. "Interference Alignment Techniques for Heterogeneous Wireless Networks". Electronic Thesis or Diss., Paris, CNAM, 2016. http://www.theses.fr/2016CNAM1058.

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Dans cette thèse, nous étudions les algorithmes d’alignement d’interférence dans les réseaux hétérogènes basés sur la sélection des flux. Tout d’abord, nous considérons différents scénarios de déploiement des pico-cellules dans un contexte de connaissance parfaite des canaux de transmission au niveau des émetteurs. Deux algorithmes sont proposés respectivement pour les réseaux totalement et partiellement connectés. Afin d’assurer une équité entre les liens, les algorithmes garantissent qu’au moins un flux de chaque lien émetteur/récepteur soit sélectionné. La séquence des flux est choisie parmi un ensemble qui contient les séquences les plus souvent sélectionnées en effectuant une recherche exhaustive. Ces algorithmes sont significativement moins complexes que la recherche exhaustive tout en ayant une performance proche de celle-ci. Après la sélection d’un flux, les interférences entre ce flux et les flux qui n’ont pas encore été sélectionnées sont alignées par projections orthogonales. Dans une deuxième partie de la thèse, l’impact de la connaissance partielle des canaux de transmission sur les algorithmes proposés est analysé. Il est montré que les interférences entre flux causent alors une forte dégradation des performances en raison des erreurs de quantification. Pour réduire cette dégradation, un nouvel algorithme est développé pour ce contexte. Finalement, des schémas d’allocation adaptative des bits pour les voies de retour sont proposés afin d’augmenter les performances des algorithmes précédents. Les performances de ces schémas et de ces algorithmes sont évaluées en considérant différents scénarios avec différentes topologies des pico-cellules. Nous avons montré que les algorithmes proposés pour le cas des transmissions avec voie de retour sont significativement plus robustes et plus performants que les algorithmes d’alignement d’interférence classiques
In this thesis, we study the stream selection based interference alignment (IA) algorithms, which can provide large multiplexing gain, to deal with the interference in the heterogeneous networks. Firstly, different deployment scenarios for the pico cells are investigated assuming perfect channel state information (CSI) at the transmitters.Two different stream selection IA algorithms are proposed for fully and partially connected interference networks and selecting at least one stream is guaranteed for each user. A stream sequence is selected among a predetermined set of sequences that mostly contribute to the sum-rate while performing an exhaustive search. In the proposed algorithms, the complexity of the exhaustive search is significantly decreased while keeping the performance relatively close. After selecting a stream, the interference generated between the selected and the unselected streams is aligned by orthogonal projections. Then, the influence of the imperfect CSI on the proposed algorithms is analyzed and it is observed that the intra-stream interference causes a significant degradation in the performance due to the quantization error. Therefore, we propose an algorithm for the limited feedback scheme. Finally, adaptive bit allocation schemes are presented to maximize the overall capacity for all the proposed algorithms. The performance evaluations are carried out considering different scenarios with different number and placements of pico cells. It is shown that the proposed algorithm for the limited feedback is more robust to channel imperfections compared to the existing IA algorithms
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Książki na temat "802.11 Wireless communication"

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Hotspot Networks. New York: McGraw-Hill, 2003.

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Stefan, Mangold, i Berlemann Lars, red. IEEE 802 wireless systems: Protocols, multi-hop mesh/relaying, performance and spectrum coexistence. Hoboken, NJ: John Wiley & Sons, Ltd, 2006.

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IEEE Microwave Theory and Techniques Society., red. Proceedings: 1997 Wireless Communications Conference, August 11-13, 1997, Regal Harvest House, Boulder, Colorado. [New York]: Institute of Electrical and Electronics Engineers, 1997.

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IEEE Radio and Wireless Conference (2002 Boston, Mass.). RAWCON 2002: 2002 IEEE Radio and Wireless Conference : Boston, Massachusetts, USA, August 11-14, 2002. Piscataway, N.J: IEEE, 2002.

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Symposium, on Wireless Personal Communications (3rd 1993 Blacksburg Va ). Virginia Tech's Third Symposium on Wireless Personal Communications: Proceedings, June 9-11, 1993. Blacksburg: Virginia Polytechnic Institute and State University, 1993.

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ITG-Fachtagung (11th 2006 Osnabrück, Germany). Mobilfunk: Technologien und Anwendungen : Vorträge der 11. ITG-Fachtagung vom 17. bis 18. Mai 2006 in Osnabrück. Berlin: VDE, 2006.

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Italy) Annual Conference on Wireless On-Demand Network Systems and Services (9th 2012 Courmayeur. 2012 9th Annual Conference on Wireless On-Demand Network Systems and Services (WONS 2012): Courmayeur, Italy, 9-11 January 2012. Piscataway, NJ: IEEE, 2012.

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Society, IEEE Communications, National University of Singapore. Institute for Communications Research, International Federation for Information Processing. Technical Committee 6. i IEEE Computer Society. Technical Committee on Personal Communications, red. Mobile and wireless communications network: 2002 4th International Workshop on Mobile and Wireless Communications Network : SAS Radisson Arlandia Hotel, Stockholm, Sweden, 9-11 September, 2002. Piscataway, N.J: IEEE, 2002.

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Bangalore, India) International Conference on Wireless and Optical Communications Networks (2006. 2006 IFIP International Conference on wireless and optical communications networks: Bangalore, India, 11-13 April 2006. Piscataway, NJ: Institute of Electrical and Electronics Engineers, 2006.

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IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (17th 2006 Helsinki, Finland). 2006 IEEE 17th International Symposium on Personal, Indoor, and Mobile Radio: Helsinksi, Finland, 11-14 September 2006. Piscataway, NJ: IEEE, 2006.

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Części książek na temat "802.11 Wireless communication"

1

Walke, Bernhard H., Lars Berlemann, Guido Hiertz, Christian Hoymann, Ingo Forkel i Stefan Mangold. "Wireless Communication - Basics". W IEEE 802 Wireless Systems, 7–41. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/9780470058800.ch2.

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Aathira, M., P. Riashree, M. Saumiya, G. Ananthi i A. Malini. "6G/5G Cellular Networks Empowering Wireless Technologies". W Wireless Communication Technologies, 224–40. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003389231-11.

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Thakur, Kutub, i Al-Sakib Khan Pathan. "Securing Wireless Network Communication". W Securing Mobile Devices and Technology, 167–90. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003230106-11.

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Agbinya, Johnson I. "WiMAX Technology". W 4G Wireless Communication Networks, 209–39. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003357247-11.

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Kumar, Sanjay. "Wireless System Capacity". W Wireless Communication-the fundamental and advanced concepts, 377–405. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003340058-11.

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Sankararajan, Radha, Hemalatha Rajendran i Aasha Nandhini Sukumaran. "Real-World Applications of Compressive Sensing". W Compressive Sensing for Wireless Communication, 413–46. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003337652-11.

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Farzaneh, Forouhar, Ali Fotowat, Mahmoud Kamarei, Ali Nikoofard i Mohammad Elmi. "Scattering Parameters". W Introduction to Wireless Communication Circuits, 349–75. Wyd. 2. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003338710-11.

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Farzaneh, Forouhar, Ali Fotowat, Mahmoud Kamarei, Ali Nikoofard i Mohammad Elmi. "Scattering Parameters". W Introduction to Wireless Communication Circuits, 347–73. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003338703-11.

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Rasveen, Shilpy Agrawal i Khvati Chopra. "Analysis of Energy Efficient Narrowband Internet of Things (NB-IoT): LPWAN Comparison, Challenges, and Opportunities". W Wireless Communication with Artificial Intelligence, 197–217. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003230526-11.

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Boulogeorgos, Alexandros-Apostolos A., i Angeliki Alexiou. "Antenna Misalignment and Blockage in THz Communications". W Next Generation Wireless Terahertz Communication Networks, 213–47. New York: CRC Press, 2021. http://dx.doi.org/10.1201/9781003001140-11.

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Streszczenia konferencji na temat "802.11 Wireless communication"

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Zeng ju-ling, Xie bing, Zhou wen-an i Song jun-de. "Notice of Retraction: An improved admission control for HCCA in IEEE 802. 11 e WLANS". W 2008 11th IEEE International Conference on Communication Technology (ICCT 2008). IEEE, 2008. http://dx.doi.org/10.1109/icct.2008.4716127.

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Fernandes e Fizardo, Trima Piedade. "Wibree: wireless communication technology". W Fourth International Conference on Machine Vision (ICMV 11), redaktorzy Zhu Zeng i Yuting Li. SPIE, 2011. http://dx.doi.org/10.1117/12.920122.

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Takahashi, Mitsuru, Satoshi Suyama, Hiroshi Suzuki i Kazuhiko Fukawa. "10 Gbps outdoor mobile communication experiment employing CoMP in 11 GHz band". W 2014 IEEE Radio and Wireless Symposium (RWS). IEEE, 2014. http://dx.doi.org/10.1109/rws.2014.6830114.

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Hong, Choong Seon. "Session details: Wireless sensor networks". W ICUIMC '11: The 5th International Conference on Ubiquitous Information Management and Communication. New York, NY, USA: ACM, 2011. http://dx.doi.org/10.1145/3244665.

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Zhao, Meng, Fangzhou Guo i Wenhe Xia. "Excitation of TE11 Mode in Microwave Communication for Downhole While Drilling". W 2023 IEEE MTT-S International Wireless Symposium (IWS). IEEE, 2023. http://dx.doi.org/10.1109/iws58240.2023.10223153.

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Yu, Jinyun, Hao Sun i Tuteng Chen. "Network Security Protocol Testing Technology Based on Wireless Communication System". W Proceedings of the First International Conference on Science, Engineering and Technology Practices for Sustainable Development, ICSETPSD 2023, 17th-18th November 2023, Coimbatore, Tamilnadu, India. EAI, 2024. http://dx.doi.org/10.4108/eai.17-11-2023.2342823.

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Nisha, Abhishek Bansal i Nidhi. "A Review on Energy Efficient Wireless Sensor Networks". W 2016 Sixth International Conference on Advanced Computing & Communication Technologies. Singapore: Research Publishing Services, 2016. http://dx.doi.org/10.3850/978-981-11-0783-2_412.

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Guedes, Alan L. V., i Sergio Colcher. "H.761 Support of a new SigGen Media Type to Enable Inaudible Sound Data Communication". W XXV Simpósio Brasileiro de Sistemas Multimídia e Web. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/webmedia_estendido.2019.8173.

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Current consumer devices, such as TVs, smartphones, smartwatches,etc., often come with built-in support for radio-frequency (RF) wireless communication. This support requires RF hardware and de-ends on technologies such as Bluetooth, IEEE 802 WiFi, or 4Gmobile networks. There are situations, however, where the RF data network is not available, or where it is more advantageous to use some other form of wireless communication. One alternative communication through inaudible sound. The same consumer devices that come with RF support usually come equipped with speakers and microphones which enables them to produce and detect inaudible sound. By inaudible sound, we mean sound waves in frequencies that cannot be heard by humans—usually those above 19–22 kHz. Many works in the literature that show that communication through inaudible sound is feasible on consumer-grade PCs, laptops, and smartphones. Here we are mainly concerned with the applicability of this technique to enable inaudible sound applications in the Ginga-NCL engines. This way, we propose a new type of media object called SigGen.
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Das, Sajal Kanta. "Designing a Routing Protocol for Optical Wireless Communication between Mobile Sensor Nodes". W 2016 Sixth International Conference on Advanced Computing & Communication Technologies. Singapore: Research Publishing Services, 2016. http://dx.doi.org/10.3850/978-981-11-0783-2_19.

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Zidek, Kamil, Dagmar Janacova, Alexander Hosovsky, Jan Pitel i Peter Lazorik. "Data optimization for communication between wireless IoT devices and Cloud platforms in production process". W 3rd EAI International Conference on Management of Manufacturing Systems. EAI, 2018. http://dx.doi.org/10.4108/eai.6-11-2018.2279672.

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