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Rozprawy doktorskie na temat „HSUPA”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 20 lutego 2023

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1

Carballo, Vega Edgar Raúl. "LTE Vs. Wimax móvil Vs. HSPA (HSUPA, HSDPA) como tecnologías de redes MAN." Thesis, Universidad de las Américas Puebla, 2013. http://catarina.udlap.mx/u_dl_a/tales/documentos/lem/carballo_v_er/.

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En este proyecto final se describe, se analiza y se compara la capa física de LTE (Long Term Evolution) y WIMAX móvil (Worldwide Interoperability for Microwave Access), para determinar la mejor tecnología en la implementación de una red de área metropolitana. Se tienen dos estándares tecnológicos de dos grandes desarrolladores de tecnología de telecomunicaciones. Este proyecto final se concentra en la capa física de estos estándares, la cual se encarga de asegurarse que la señal sea transportada exitosamente de un dispositivo a otro. Se lleva a cabo la codificación, modulación y sinc
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2

Bičík, Petr. "Vývoj a výhled mobilního připojení v ČR." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-15376.

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Mobile telecommunications belong to one of the fields which still evolves and it is expected that in the future they are going to offer great benefit to the whole world. This work focuses on current and future development of mobile Internet connection in the Czech Republic. At first the technologies used to provide mobile Internet connection are described and compared and then the situation (in terms of technologies and mobile operators) in the Czech market is outlined and its possible evolution in the near future is presented. Furthermore, the tarifs of mobile operators are compared with thos
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3

Liu, Tuo. "Analytical modeling of HSUPA-enabled UMTS networks for capacity planning." University of Sydney, 2009. http://hdl.handle.net/2123/4055.

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PhD<br>In recent years, mobile communication networks have experienced significant evolution. The 3G mobile communication system, UMTS, employs WCDMA as the air interface standard, which leads to quite different mobile network planning and dimensioning processes compared with 2G systems. The UMTS system capacity is limited by the received interference at NodeBs due to the unique features of WCDMA, which is denoted as `soft capacity'. Consequently, the key challenge in UMTS radio network planning has been shifted from channel allocation in the channelized 2G systems to blocking and outage proba
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4

Smith, Brian J. "CELLULAR BROADBAND TELEMETRY OPTIONS FOR THE 21st CENTURY: Looking at broadband cellular from a telemetry perspective." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604482.

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ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, California<br>With the recent broadband upgrades to various cellular infrastructures and the myriad new emerging wireless broadband standards and services offered by carriers, it is often difficult to navigate this sea of technology. In deciding the best choice for broadband telemetry applications, one must look not only at the technology, but also at the economics, market timing, bandwidt
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5

Liu, Tuo. "Analytical modeling of HSUPA-enabled UMTS networks for capacity planning." Thesis, The University of Sydney, 2008. http://hdl.handle.net/2123/4055.

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In recent years, mobile communication networks have experienced significant evolution. The 3G mobile communication system, UMTS, employs WCDMA as the air interface standard, which leads to quite different mobile network planning and dimensioning processes compared with 2G systems. The UMTS system capacity is limited by the received interference at NodeBs due to the unique features of WCDMA, which is denoted as `soft capacity'. Consequently, the key challenge in UMTS radio network planning has been shifted from channel allocation in the channelized 2G systems to blocking and outage probabilitie
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6

Liu, Tuo. "Analytical modeling of HSUPA-enabled UMTS networks for capacity planning." Connect to full text, 2008. http://ses.library.usyd.edu.au/handle/2123/4055.

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Thesis (Ph. D.)--University of Sydney, 2009.<br>Title from title screen (viewed February 20, 2009). Includes graphs and tables. Includes list of publications co-authored with others. Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Information Technologies, Faculty of Engineering and Information Technologies. Degree awarded 2009; thesis submitted 2008. Includes bibliographical references. Also available in print form.
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7

Alinejad, Ali. "Cross layer ultrasound video streaming over mobile WiMAX and HSUPA networks." Thesis, Kingston University, 2012. http://eprints.kingston.ac.uk/23718/.

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It is well known that the evolution of 4G-based mobile multimedia network systems will contribute significantly to future m-health applications that require high bandwidth and fast data rates. Central to the success of such emerging applications is the compatibility of broadband networks such as mobile WiMAX (IEEE 802.16e) and RSVP A, and especially their rate adaption issues combined with the acceptable real time medical quality of service requirements. The design of effective broadband mobile healthcare systems usmg emerging WiMAX and RSxP A networks is important from the medical perspective
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8

Jehličková, Lenka. "Základy mobilního internetu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-218856.

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Thesis concerns with mobile communications theory with focus on data transfer. In the introduction the history, the origin and individual mobile systems generations are described. It is followed by detailed description of second, third and fourth generation mobile systems. Frequency band allocation, signal processing, the system architecture itself, security management and basic features are also discussed. The GSM system is described together with individual data transmission types based on circuit switching – CSD and HSCSD and packet switching – GPRS and EDGE. For UMTS, FDD and TDD modes are
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9

Stenbom, Håkan. "Optimization of Remote ServiceSolution for large installations : Wireless LAN and WAN for ABB Robotics." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-12083.

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This report describes a thesis work carried out at ABB Robotics in Västerås. The objective of this thesis is to find technologies  and equipments  for wireless data transfer  suitable for the present and future needs of ABB Robotics Remote Service for large installations in industrial environments. ABB Robotics has a Remote Service solution to securely gather information from robots, manage alarms and potentially execute remote commands by ABB Robotics. This solution consists of an intelligent Service  Box plugged to the robot. This  Service Box is also connected through GPRS or directly throu
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10

Saïdi, Taofik. "Architectures matérielles pour la technologie WCDMA étendue aux systèmes mulit-antennes." Phd thesis, Université Rennes 1, 2008. http://tel.archives-ouvertes.fr/tel-00446060.

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Depuis une dizaine d'années, l'avènement des techniques multi-antennes (ou MIMO) pour les communications sans fil, mobiles ou fixes, a révolutionné les possibilités offertes pour de nombreux domaines d'application des télécommunications. La disposition de plusieurs antennes de part et d'autre du lien augmente considérablement la capacité des systèmes sans fil. Cependant, les al- gorithmes numériques à mettre en œuvre pour réaliser ces systèmes sont autrement complexes et constituent un challenge quant à la définition d'architectures matérielles performantes. L'objectif du trav
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11

Konuskan, Cagatay. "Turbo Equalization for HSPA." Thesis, Linköping University, Department of Electrical Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-54640.

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<p>New high quality mobile telecommunication services are offered everyday and the demand for higher data rates is continuously increasing. To maximize the uplink throughput in HSPA when transmission is propagated through a dispersive channel causing self-interference, equalizers are used. One interesting solution, where the equalizer and decoder exchange information in an iterative way, for improving the equalizer performance is Turbo equalization.</p><p>In this thesis a literature survey has been performed on Turbo equalization methods and a chosen method has been implemented for the uplink
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12

Hameed, Farhan. "Rate Scheduling for HSDPA in UMTS." Thesis, Högskolan Dalarna, Datateknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:du-3734.

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The introduction of a new technology High Speed Downlink Packet Access (HSDPA) in the Release 5 of the 3GPP specifications raises the question about its performance capabilities. HSDPA is a promising technology which gives theoretical rates up to 14.4 Mbits. The main objective of this thesis is to discuss the system level performance of HSDPAMainly the thesis exploration focuses on the Packet Scheduler because it is the central entity of the HSDPA design. Due to its function, the Packet Scheduler has a direct impact on the HSDPA system performance. Similarly, it also determines the end user pe
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13

Iqbal, Javed, and Basit Mustafa. "Scheduling Algorithms and QoS in HSDPA." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1181.

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High Speed Downlink Packet Access (HSDPA) is the extension to the Universal Mobile Telecommunication System (UMTS). HSDPA allows for higher data rates due to new adaptive Modulation and Coding (AMC) techniques, Hybrid Automatic Repeat reQuest (H-ARQ) and fast scheduling algorithm. One of the key features of HSDPA technology is to handle UMTS traffic classes with different Quality of Service (QoS) requirements. In order to provide QoS several scheduling algorithms, QoS control constraints, and different other schemes have been proposed in literature. In the thesis, a simple matlab based model f
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14

Szabo, Andrei. "Evaluation of MIMO concepts in HSDPA by system level simulations." Aachen Shaker, 2008. http://d-nb.info/992012600/04.

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15

Assaad, Mohamad. "Etude Multi-couches dans le système HSDPA." Phd thesis, Télécom ParisTech, 2006. http://pastel.archives-ouvertes.fr/pastel-00001877.

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L'augmentation de l'utilisation de l'Internet et des services de données motive l'évolution des réseaux cellulaires de troisième. Dans ce contexte, HSDPA (High Speed Downlink Packet Access) a été développé dans les releases 5 et 6 au sein de 3GPP pour poursuivre l'évolution du mode "paquet" de l'UMTS. Ce système utilise de nouvelles technologies telles que le Hybrid-ARQ (Automatic Repeat Request), la modulation adaptative et l'ordonnancement rapide (fast Scheduling) pour permettre de véhiculer des débits plus élevés sur l'interface radio et d'augmenter la capacité. Cette thèse se focalise sur
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16

Wang, Xiaoxin. "3G HSDPA Performance In Mobile Internet Connections." Thesis, KTH, Mikroelektronik och Informationsteknik, IMIT, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93068.

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A key objective for 3G wireless networks, such as the Universal Mobile Telecommunication System (UMTS), is the explicit support for data communications for mobile users. Today, the dominant transport protocol in the Internet is the Transport Control Protocol (TCP). Since TCP was not tailored for wireless networks, there are some performance issues occurring when TCP traffic is transferred over a UMTS radio link. In this paper, the characteristics of TCP and UMTS are specified and the problems of TCP over UMTS dedicated channels (DCHs) are analyzed. The problem is high delays implying low utili
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17

Shen, Hui. "Regulation der Transkription des hspA-Gens in Stigmatella aurantiaca und Analyse der Funktion des HspA-Proteins." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=961946296.

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18

Husain, I. "Studies on the mitochondrial Hsup(+)-ATPase complex and its interaction with the Hsup(+)-ATPase inhibitor protein." Thesis, University of Leeds, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355705.

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19

Siraj, Fahd Muhammad. "HTTP Based Adaptive Streaming over HSPA." Thesis, KTH, Kommunikationsnät, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-53517.

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MPEG has developed various technologies for multimedia storage and delivery, such as MPEG-2 TS and MP4 file format. HTTP-based Adaptive Streaming is a new technology to deliver such multimedia streams over the Open Internet to a variety of consumer devices including set-top boxes, hybrid TVs, PC and portable devices. The examples include Apple HTTP Live Streaming, Microsoft SmoothStreaming, 3GPP Adaptive HTTP Streaming and the recent MPEG standardization activity related to Dynamic Adaptive Streaming over HTTP (DASH). The optimization tools used within these techniques try to cope with the und
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20

Melo, Emilio Honorio de. "Análise de tráfego de redes 3G/HSPA." Universidade Federal de Pernambuco, 2010. https://repositorio.ufpe.br/handle/123456789/2399.

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Made available in DSpace on 2014-06-12T15:57:47Z (GMT). No. of bitstreams: 2 arquivo3226_1.pdf: 3509893 bytes, checksum: 6653c5bf984844a475970870f4a442fb (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2010<br>Nos últimos anos, as operadoras de telefonia móvel estão investindo na implantação e expansão de suas redes de terceira geração 3G/HSPA. O volume de tráfego de dados dessas redes crescem a taxas elevadas, o que demanda altos investimentos e celeridade no incremento por mais capacidade, exigindo das operadoras a racionalização de s
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21

Freudenthaler, Klemens. "Investigation of the HSDPA system and its MIMO extension /." Linz : Trauner, 2008. http://opac.nebis.ch/cgi-bin/showAbstract.pl?u20=9783854994169.

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22

Zhao, Haichuan Jianqiu Wu. "Implementation and simulation of HSDPA functionality with ns-2." Thesis, Linköping University, Department of Electrical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2833.

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<p>Enhanced packet-data access is a trend in third generation mobile communication system. WCDMA Release 5 introduces HSDPA (High Speed Packet Data Access) with a brand new downlink transport channel HS-DSCH (High Speed Downlink Shared Channel) into 3GPP specification to provide greater capacity. HS-DSCH supports some new feature such as fast link adaptation, fast scheduling and fast HARQ (hybrid ARQ) so as to increase system performance. It efficiently improves power utilization, shortens retransmission time and increases system throughput. </p><p>The focus for this thesis is implementation a
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23

Braga, Andrà Ribeiro. "Controle de congestionamento para voz sobre IP em HSDPA." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2073.

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nÃo hÃ<br>O crescimento do nÃmero dos usuÃrios do serviÃo de Voice over IP(VoIP) faz dele o serviÃo com o maior interesse de ser provido por operadoras de telefonia celular. Por outro lado, este demanda um controle de Quality of Service (QoS) bastante rÃgido, o que torna-se mais complicado em redes sem fio, porque alÃm de congestionamentos na rede, os pacotes podem ser perdidos devido à erros nas transmissÃes no enlace de rÃdio. Dentro deste paradigma, estratÃgias de controle de congestionamento aparecem como uma boa soluÃÃo para lidar com as garantias de QoS em situaÃÃes de sobrecarga do sist
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Braga, André Ribeiro. "Controle de congestionamento para voz sobre IP em HSDPA." reponame:Repositório Institucional da UFC, 2006. http://www.repositorio.ufc.br/handle/riufc/15983.

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BRAGA, A. R. Controle de congestionamento para voz sobre IP em HSDPA. 2006. 98 f. Dissertação (Mestrado em Engenharia de Teleinformática) – Centro de Tecnologia, Universidade Federal do Ceará, Fortaleza, 2006.<br>Submitted by Marlene Sousa (mmarlene@ufc.br) on 2016-04-01T17:58:37Z No. of bitstreams: 1 2006_dis_arbraga.pdf: 974057 bytes, checksum: 283818878c8d44ed883fa749a672d3d7 (MD5)<br>Approved for entry into archive by Marlene Sousa(mmarlene@ufc.br) on 2016-04-01T18:47:16Z (GMT) No. of bitstreams: 1 2006_dis_arbraga.pdf: 974057 bytes, checksum: 283818878c8d44ed883fa749a672d3d7 (MD5)<br>Made
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Ba, Ahmet. "Développement de récepteurs avancés pour les systèmes de communication mobile de type WCDMA et HSDPA." Phd thesis, Télécom ParisTech, 2006. http://pastel.archives-ouvertes.fr/pastel-00001766.

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Dans la première partie de la thèse, on considère des méthodes d'estimation des canaux utilisateurs dédiés en liaison descendante. Ces méthodes sont particulièrement avantageuses dans un contexte de transmission à formation de faisceaux. Elles ne supposent aucune connaissance a priori des retards des signaux reçus ainsi que les paramètres de formation des faisceaux; exploitent la totalité des séquences pilotes transmises ainsi que la dynamique structurée du canal.Dans la seconde partie, on commence par considérer un schéma d'égalisation au niveau chip et dite HDD-NLMS. Ce schéma utilise l'esti
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Revilla, Apac Odalys Juliette. "Diseño de una red HSDPA en la ciudad de Huancayo." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2011. http://tesis.pucp.edu.pe/repositorio/handle/123456789/838.

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La presente tesis consiste en el diseño de una red HSDPA para la ciudad de Huancayo. El primer capítulo está centrado el la problemática que se presenta en Huancayo con respecto al servicio 3G y sobre el análisis de los objetivos a los que se quiere llegar con las posibles soluciones. El segundo capítulo abarca el marco teórico, donde se estudió sobre la evolución de las tecnologías móviles y posteriormente se centró en la tecnología HSDPA para estudiar su arquitectura y demás parámetros de esta tecnología. En el tercer capítulo se presenta un análisis socio-económico de la ciudad de Huancayo,
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Goffard, Molina Pablo Felipe. "Descarga de datos a alta velocidad con hsdpa sobre umts." Tesis, Universidad de Chile, 2007. http://www.repositorio.uchile.cl/handle/2250/104729.

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Barrow, John H. "Revising the BGSU Mathematics Placement System." Bowling Green State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1245699733.

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Schämann, Marcus. "Entwurf von digitalen Basisband-Komponenten eines HSDPA-Empfängers auf System-, Algorithmen- und Architekturebene mit Minimierung der Verlustleistung." Tönning Lübeck Marburg Der Andere Verl, 2008. http://d-nb.info/989527743/04.

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Martelli, Chiara. "Multi-standard low-power base-band digital receiver, enhanced for HSDPA /." Konstanz : Hartung-Gorre, 2006. http://www.loc.gov/catdir/toc/fy0707/2007366221.html.

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Originally presented as the author's thesis (Swiss Federal Institute of Technology), Diss. ETH No. 16683.<br>Summary in Italian and English; text in English. Includes bibliographical references (p. 171-177).
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31

Chungtragarn, Anusorn. "MIMO-HSDPA : an approach to enhance the performance of wireless networks." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/24430.

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The thesis focuses on improving the performance of wireless networks including energy efficiency and the maximum capacity of the network. In wireless networks such as ad hoc networks, they have been observed that the physical transmission rate is a vital parameter. For slow data rate networks, not only the end-to-end throughput is poor, the energy efficiency is also not good, because the transmission energy cannot be consumed effectively. In order to improve both performance matrices, this thesis proposes the use of MIMO-HSDPA techniques collaborating with an optimal resource allocation techni
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Ma, Irina Chi Wai. "Transceiver optimisation for MIMO high-speed downlink packet access (HSDPA) system." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/23285.

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In recent years, the growth of smart phone industry drives its users to demand better quality multimedia services while achieving faster internet speeds. With a higher number of subscribers and more data hungry applications, there is a need to improve the current 3G HSDPA data rate until the 4G network is fully implemented globally. Therefore, the aim of this thesis is to improve the downlink data rate of the HSDPA system throughput through both transmitter and receiver optimisations while balancing the complexities of the optimisation algorithms. Initially, improving system throughput through
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Cardoso, Fabbryccio Akkazzha Chaves Machado. "Aplicações de antenas inteligentes e equalização concorrente em sistemas WCDMA/HSDPA." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261738.

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Orientador: Dalton Soares Arantes<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-04T09:25:15Z (GMT). No. of bitstreams: 1 Cardoso_FabbryccioAkkazzhaChavesMachado_M.pdf: 6296555 bytes, checksum: 2190ae93699da79f815c9e5199564080 (MD5) Previous issue date: 2004<br>Resumo: Nesta tese são investigados e propostos diferentes algoritmos adaptativos para antenas inteligentes e equalização em receptores de usuário no enlace de descida de sistemas WCDMA/HSDPA. Considerando o tema de equalização de c
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34

Sousa, Leonardo Ramon Nunes de. "AvaliaÃÃo da Qualidade de Voz do ServiÃo VoIP em Sistemas HSDPA." Universidade Federal do CearÃ, 2007. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2015.

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FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico<br>Nos Ãltimos anos, observa-se o surgimento e a rÃpida disseminaÃÃo do serviÃo VoIP, integrando-se ao mercado atual junto à telefonia convencional e Ãs redes celulares. Por ser uma alternativa tecnolÃgica que contribui para minimizar ustos, assiste-se a uma preferÃncia crescente por fazer fegar a voz atravÃs das redes IP. O HSDPA, como sistema celular, permite a transmissÃo de dados em alta velocidade, aumenta a largura de banda da rede e abre novas possibilidades de serviÃos multimÃdia, como o VoIP que utiliza a transmiss
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Et-Tolba, Mohamed. "Transmission de données pour le HSDPA et étude des algorithmes HARQ." Télécom Bretagne, 2007. http://www.theses.fr/2006TELB0024.

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L’évolution majeur de l’UMTS, ces dernières années est le HSDPA (High Speed Downlink Packet Access) qui est basé sur la transmission en mode paquet. Il est conçu pour répondre au besoin en débit des utilisateurs dans la liaison descendante. Le HSDPA permet d’atteindre des débits qui peuvent dépasser 10 Mbits/s. Ceci est possible grâce à l’utilisation du principe de transmission multicodes en application conjointe avec de nouvelles technologies telles que la modulation et codage adaptatifs (MCA) ainsi que l’HARQ (Hybrid Automatic Repeat reQuest). Cette thèse porte sur la transmission de données
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Sousa, Leonardo Ramon Nunes de. "Avaliação da qualidade de voz do serviço VoIP em sistemas HSDPA." reponame:Repositório Institucional da UFC, 2007. http://www.repositorio.ufc.br/handle/riufc/16076.

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SOUSA, L. R. N. Avaliação da qualidade de voz do serviço VoIP em sistemas HSDPA. 2007. 108 f. Dissertação (Mestrado em Engenharia de Teleinformática) – Centro de Tecnologia, Universidade Federal do Ceará, Fortaleza, 2007.<br>Submitted by Marlene Sousa (mmarlene@ufc.br) on 2016-04-04T17:50:56Z No. of bitstreams: 1 2007_dis_lrnsousa.pdf: 2856245 bytes, checksum: 09d1682db6deab934bb19b5dc67e6098 (MD5)<br>Approved for entry into archive by Marlene Sousa(mmarlene@ufc.br) on 2016-04-06T13:49:46Z (GMT) No. of bitstreams: 1 2007_dis_lrnsousa.pdf: 2856245 bytes, checksum: 09d1682db6deab934bb19b5dc67e60
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Hadjar, Omar Rachid. "Analyse, implémentation et évaluation de performance de la future méthode d'accès HSDPA." Thesis, Université Laval, 2006. http://www.theses.ulaval.ca/2006/23718/23718.pdf.

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La technologie HSDPA (High Speed Downlink Packet Access) représente la première étape d’évolution de la méthode d’accès du réseau mobile de troisième génération UMTS (Universal Mobile Telecommmunications Service). Cette technologie permet d’obtenir des débits théoriques supérieurs à 10 Mbps sur le lien descendant et de supporter des services à valeur ajoutée, tels que l’accès Internet à haute vitesse, le téléchargement de fichiers audio et vidéo, la réception de programmes télévisés et la visiophonie. Ces améliorations sont rendues possibles grâce à une combinaison de propriétés qui sont à la
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Szabo, Andrei [Verfasser]. "Evaluation of MIMO concepts in HSDPA by system level simulations / Andrei Szabo." Aachen : Shaker, 2008. http://d-nb.info/1161309381/34.

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CORREA, RODRIGO JUREMA DE ASSIS. "PERFORMANCE ANALYSIS OF LINKS WITH ADAPTIVE MODULATION APPLIED TO WCDMA/HSDPA SYSTEMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2003. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=4273@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Este trabalho é um estudo sobre o desempenho de um enlace típico do padrão UMTS/WCDMA para sistemas celulares de terceira geração, utilizando a técnica denominada modulação adaptativa. Esta técnica consiste em escolher, para cada quadro de bits transmitido, a modulação mais adequada às condições do canal. Os aspectos básicos do problema foram formulados analiticamente considerando a transmissão com modulações PSK e QAM coerentes em um canal com desvanecimento plano e efeito Doppler. Para considerar a aplicação a um modelo
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RAMOS, MARCELO CORREA. "PERFORMANCE OF ADAPTIVE MODULATION IN WCDMA/HSDPA LINKS IN PRESENCE OF MULTIPATH." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2004. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=5869@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Este trabalho é um estudo sobre um enlace do sistema HSDPA (High Speed Downlink Packet Access), um subsistema do padrão UMTS/WCDMA, desenvolvido para a transmissão de dados em alta velocidade no enlace de descida. Para atingir altas taxas de transmissão, é prevista a utilização, neste sistema, de diversas técnicas avançadas de processamento de sinais, entre elas a modulação adaptativa. O princípio desta técnica é escolher, para cada quadro de bits transmitido, a modulação mais adequada às condições do canal. Através de si
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Husain, Samreen Riaz. "Delay-based packet scheduling for High Speed Downlink Packet Access." Thesis, Kingston, Ont. : [s.n.], 2007. http://hdl.handle.net/1974/649.

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Azizan, A. "Physical layer performance analysis of Satellite High Speed Downlink Packet Access (S-HSDPA)." Thesis, University of Surrey, 2008. http://epubs.surrey.ac.uk/842979/.

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This thesis considers the physical layer performance of the Satellite High Speed Downlink Packet Access (S-HSDPA) system via ground based relays or intermediate Module Repeaters (IMRs). The work evaluates the modifications needed for the terrestrial HSDPA system to a satellite architecture by change of certain significant parameters within a high dispersive IMR environment to deliver high data throughput to satellite mobile terminals. Initial results for S-HSDPA with different terminal capabilities and modulation formats have been obtained. Two diversity techniques, namely receive antenna dive
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43

Matinrad, Arash. "Design & development of an HSPA system simulator for network planning." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69673.

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HSPA planning requires identification of key performance indicators  (KPIs), such as infrastructure cost,performance, service quality and the amount of E/M pollution. To evaluate such a framework describing and linking these key elements for HSPA planning and optimization we need to carry out a set of HSPA system-level event-driven simulations under different scenarios. To have such simulations, a new tool should be developed. In this thesis work a simulation tool is developed within NS-3, an open source network simulator. The simulation tool consists several entities to represent a UMTS netwo
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KANSAU, SILVA IMAD NASIB. "Proprietes fonctionnelles et immunologiques de la chaperonine hspa de helicobacter pylori." Paris 7, 1996. http://www.theses.fr/1996PA077075.

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Helicobacter pylori est une bacterie responsable de gastrites chroniques qui peuvent evoluer vers la maladie ulcereuse, l'atrophie gastrique et les carcinomes gastriques. L'objectif de ce travail a ete de caracteriser la chaperonine hspa (homologue a groes) de h. Pylori sur le plan genetique, moleculaire et immunologique. La caracterisation de l'operon codant pour hspa et hspb (homologue a groel) a revele une organisation similaire a celle des operons groesl d'autres bacteries. Hspa s'est averee unique du fait de la presence, dans sa partie c-terminale, d'une sequence riche en residus histidin
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Fialová, Ivana. "SROVNÁNÍ VYBRANÝCH MOBILNÍCH PŘIPOJENÍ K INTERNETU." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-5289.

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The topic of presented thesis is the subject of mobile Internet connectivity in the Czech Republic. The text is divided into two main parts. The first theoretical part is focused on an individual description of the technologies (GSM, GPRS, EDGE, UMTS and HSDPA) which are being offered in the Czech Republic by the operators. The greatest emphasis is put on a description of UMTS and HSDPA. The second part is practical; it describes the offers of each respective Czech operator focusing on the third-generation network or particularly the network operator with the highest connection speed. The thes
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Murugesapillai, Navamshan. "The performance of the generalized RAKE (G-RAKE) receiver in a WCDMA-HSDPA scenario." Thesis, University of Ottawa (Canada), 2005. http://hdl.handle.net/10393/26989.

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The High-Speed Downlink Packet Access (HSDPA) is a packet-based data service for increased data speed over WCDMA downlink. At high-speed data rate, advanced receivers are needed to realize a reasonable bit error performance. This thesis studies the link-level performance of the G-RAKE receiver for the HSDPA and ways to reduce the receiver's complexity. Unlike the conventional RAKE receiver, the G-RAKE receiver suppresses interference caused by frequency-selective fading channels by accounting for coloured noise found in the fingers' output. Thus, G-RAKE optimizes the placement of fingers and t
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Romero, Zevallos Miguel Félix. "Diseño de una red HSDPA para la ciudad de Arequipa / Miguel Félix Romero Zevallos." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2009. http://tesis.pucp.edu.pe/repositorio/handle/123456789/198.

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El presente proyecto de tesis consiste en realizar el diseño de una red de tercera generación para la ciudad de Arequipa; para esto se ha decidido utilizar la tecnología HSDPA que evoluciona a partir de la tecnología UMTS. Durante el desarrollo de este proyecto veremos el porqué de la elección de dicha tecnología y analizaremos el mercado de dicha ciudad para ver si es que requiere de la implementación de una red de tercera generación y la rentabilidad de dicha inversión.<br>Tesis
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Bergström, Andreas. "Packet Data Flow Control in Evolved WCDMA Networks." Thesis, Linköping University, Department of Electrical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-4881.

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<p>The key idea of the new, shared high-capacity channel HSDPA, is to adapt the transmission rate to fast variations in the current radio conditions, thus enabling download peak data rates much higher than what WCDMA can offer today. This has induced a need for data that traverses the mobile network to be intermediately buffered in the Radio Base Station, RBS. A scheduling algorithm then basically selects the user with the most beneficial instantaneous radio conditions for access to the high-speed channel and transmission of its data over the air interface.</p><p>The purpose of this thesis is
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Saker, Louai. "Energy consumption reduction mechanisms in mobile networks." Thesis, Evry, Institut national des télécommunications, 2011. http://www.theses.fr/2011TELE0029.

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La consommation en énergie des réseaux de télécommunications a suscité un intérêt grandissant au cours des dernières années et les opérateurs mobiles cherchent des solutions innovantes pour optimiser l’efficacité énergétique. Dans cette thèse, nous nous focaliserons sur les schémas d’optimisation de la consommation d’énergie des réseaux d’accès mobiles. Nous commençons par étudier la stratégie de partage de charge qui minimise la consommation d’énergie dans la cellule tout en limitant l’impact sur la Qualité de Service. Le gain obtenu par ces algorithmes de gestion des ressources radio reste c
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Baştuğ, Ahmet. "Développement de récepteurs avancés pour les systèmes de communication mobile de type WCDMA et HSDPA." Paris, ENST, 2006. http://www.theses.fr/2006ENST0007.

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Dans la première partie de la thèse, on considère des méthodes d’estimation des canaux utilisateurs dédiés en liaison descendante. Ces méthodes sont particulièrement avantageuses dans un contexte de transmission à formation de faisceaux. Elles ne supposent aucune connaissance a priori des retards des signaux reçus ainsi que les paramètres de formation des faisceaux; exploitent la totalité des séquences pilotes transmises ainsi que la dynamique structurée du canal. Dans la seconde partie, on commence par considérer un schéma d’égalisation au niveau chip et dite HDD-NLMS. Ce schéma utilise l’est
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