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Dissertations / Theses on the topic 'Global System for Mobile communications (GSM)'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Kan, Ka Ho. "Location estimation system based on the GSM network." HKBU Institutional Repository, 2004. http://repository.hkbu.edu.hk/etd_ra/524.

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2

Sharma, Bishal. "Radio frequency optimization of a Global System for Mobile (GSM) network." Menomonie, WI : University of Wisconsin--Stout, 2008. http://www.uwstout.edu/lib/thesis/2008/2008sharmab.pdf.

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3

Darweesh, Turki H. "Capacity and performance analysis of a multi-user, mixed traffic GSM network." Ottawa, 1999.

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4

Falk, Lolita. "Konstruktion av SMS-Gateway för effektökande SMS-tjänster." Thesis, University West, Department of Informatics and Mathematics, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-594.

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5

Silva, Vanessa Sérgio da. "Sistemas de M2M utilizando GSM." Master's thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/5602.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>Com esta dissertação pretende-se estudar e projectar um sistema de controlo e comunicação M2M (Machine to Machine) que monitorize elementos móveis, por recurso a comunicações GSM (Global System for Mobile Communications). A solução proposta implica monitorizar e colectar informação telemática de um veículo, utilizando o canal GSM. O dispositivo utilizado consiste num módulo GSM/GPS, programado por linguagem Python, de forma a permitir obter informação específica via GPRS. O trabalho desenvolvido foi ainda integrado numa base de dados G

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6

Cuvelliez, Charles. "Etudes des modèles d'implémentation des opérateurs de réseaux mobiles virtuels." Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210895.

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This thesis addresses the phenomena of Mobile Virtual Network Operators (MVNO): often MVNO do not come from the telecom sector but they rent the network to mobile operators to become fully mobile operators on their own. So they compete directly not only with the other mobile operators but also with their hosting mobile operator.<p><p>Hosting MVNOs, supporting them from both operational and commercial perspectives are new challenges for the mobile operators: they have to set up a specific internal organization because they used to be a vertically integrated industrial structure. All of this rep

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7

Sivagnanasundaram, Suthaharan. "GSM mobility management using an intelligent network platform." Thesis, Queen Mary, University of London, 1997. http://qmro.qmul.ac.uk/xmlui/handle/123456789/3820.

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8

Aniruddhan, Sankaran. "A fast-locking frequency synthesizer for GSM base-stations in 180nm CMOS /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/5952.

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9

Blood, Alan Physics Faculty of Science UNSW. "Biological effects of GSM mobile phone microwave radiation: an investigation of gene expression." Awarded by:University of New South Wales. School of Physics, 2005. http://handle.unsw.edu.au/1959.4/22071.

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There is evidence that athermal radiofrequency radiation can alter Heat Shock Protein (HSP) expression or protein phosphorylation, or alter MAP kinase signalling. Effects of long-term exposure in brain tissue due to repeated HSP perturbation (eg an inhibition of apoptosis) have been hypothesised (French et al, 2001). This study aimed to investigate the RNA expression profile (12,000 genes) and HSP family protein expression levels after either acute 1-hour or chronic 4-day intermittent exposures to simulated GSM radiation in a human primary fibroblast model. The results found minimal or no effe

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10

Ferreira, Fábio Miguel Lopes. "Controlo de sistemas M2M com fotografias georreferenciadas." Master's thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/7644.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>Com esta dissertação pretende-se estudar e projectar um sistema de controlo e comunicação Machine to Machine que monitorize elementos móveis, por recurso a comunicações via GSM/UMTS (Global System for Mobile Communications/Universal Mobile Telecommunications System). A ideia do projecto é monitorizar e recolher informação telemática de um veículo utilizando a rede GSM/UMTS. As informações colectadas são, as coordenadas GPS, e informações referentes à antena GSM à qual o dispositivo se encontra ligado, assim como a recolha de fotografia

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11

Al-Hassani, Kassim Mohammed. "Performance measurements and analysis of the existing wireless communication technology in Iraq." Thesis, Brunel University, 2013. http://bura.brunel.ac.uk/handle/2438/9271.

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Iraq may be considered as the largest wireless market in the Gulf region. A key driving factor in the market of wireless communication, it has seen enormous growth in the mobile phone market over the last five years leading to almost 24 million subscribers in 2011. Moreover, there are several technologies and services working in Iraq; three GSM Operators, three CDMA national operators and three CDMA provinces operators. The recent growth in the mobile phone market is based on the Global System for Mobile (GSM) communications and Code Division Multiple Access (CDMA) standards creating the next-

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12

Iraba, Marie Louise. "Inexpensive mobile technologies to empower rural farmers with m-agriculture." Thesis, University of the Western Cape, 2010. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_9526_1370595447.

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<p>Market information and established communication between seller and buyer play an important role in business activities. This thesis investigates the Transkei area in the Eastern Cape&nbsp<br>Province, South Africa to find out how to empower rural farmers by providing them with less-expensive mobile technology enabling them to post and advertise their produce, access market&nbsp<br>information on a common database, and find and communicate with potential customers. The farmers&rsquo<br>requirements were identified using quantitative and qualitative methods and a prototype&nbsp<br>consisting

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13

Butkus, Kazimieras. "Objektų vietos nustatymo technologinių paklaidų įvertinimo sistema." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080128_104821-95531.

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Šis darbas tiria objetų vietos nustatymo paklaidų problemą bevieliuose tinkluose ir leidžia jas įvertinti įvairiais aspektais. Įvertinimo rezultatas pateikiamas kaip sugeneruotas geografinis žemėlapis bei tekstinės reikšmės. Sistema sukurta taip, kad nepriklausytų nuo bevielių ryšių technologijos, o duomenų analizės rezulate sistema leidžia juos peržiūrėti valdant geografinę padėtį bei tikslumą. Ši sistema naudojama realiose aplikacijose, pavyzdžiui, MSC MPS R5 LBS, MPS112 platformoje, taip pat „Bitės tinklo padengimo žemėlapiai“ sprendime. Sistemos veikimas yra universalus ir ji gali būti nau

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14

Mendes, Luís Miguel Vinhas. "Measurements and analysis of spectrum activity." Master's thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/7725.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>The dissertation deals with measuring and analyzing spectrum occupancy of a GSM900 band, DCS1800 band and all UMTS bandwidth. A modelization for analog power and binary quantized power is given. In the case of analog power, histograms of the power distribution during one working day are presented. In the case of quantized power the two time statistics, the time period of opportunities distribution and the time between opportunities distribution are presented, described and modeled. The measurement setup is standing in line of sight with

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15

Campacci, Rodrigo Bellotto. "Handover vertical em redes NGN: integrando a sinalização do domínio de comutação de circuitos e o IMS." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-15092008-152814/.

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Este trabalho visa estudar e implementar a integração entre o domínio de comutação de circuitos e o IP Multimedia Subsystem (IMS) para suportar handovers verticais, ou seja, entre redes de acesso distintas, por exemplo, Global System for Mobile communications (GSM) e WiFi, em especial no Serviço Voice Call Continuity (VCC). Entretanto muito pouco é especificado sobre a integração entre os domínios nas normas das diversas entidades de padronização que tratam sobre o assunto. Assim, apresenta-se uma proposta para essa integração, criando-se uma nova entidade funcional para realizá-la, o Call Dat

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16

Viljoen, Johannes Henning. "Modelling and optimal control of the market of a telecommunications operator." Diss., Pretoria : [s.n.], 2004. http://upetd.up.ac.za/thesis/available/etd-09152004-100823.

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17

Vahid, Seiamak. "Location management and network architecture design for GSM." Thesis, University of Surrey, 2000. http://epubs.surrey.ac.uk/843386/.

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Recent years have witnessed a tremendous growth of research and development to provide mobile users with "seamless" communication through wireless media. Service provision in mobile networks is closely intertwined with network mobility management and therefore efficient management of subscriber mobility remains a challenging and an important area of research. This thesis examines management of signalling traffic in mobile networks and packet network design approaches, with specific contributions relating to i) reduction of network database signalling costs in GSM; ii) minimization of mobility

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18

Kruger, Pieter Jan Harm. "Cellphone banking at the bottom of the pyramid." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/19975.

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Thesis (MSc)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: This thesis investigate the di erent available GSM bearer channels that can be used to launch a cellphone banking application. Speci c attention is given to launch such a cellphone banking application to the so called \bottom of the pyramid". In South Africa, there are an estimate 11 to 13 million people with no bank accounts. The cellphone create an ideal opportunity to be used as a tool to reach this untapped market segment that today mainly uses cash to pay for day to day living expenses. The thesis provide more informa

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19

Hraga, Hmeda I. "Modelling and design of compact wideband and ultra-wideband antennas for wireless communications. Simulation and measurement of planer inverted F antennas (PIFAs) for contemporary mobile terminal applications, and investigations of frequency range and radiation performance of UWB antennas with design optimisation using parametric studies." Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/5668.

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The rapidly growing demand for UWB as high data rates wireless communications technology, since the Federal Communications Commission (FCC) allocated the bandwidth of UWB from 3.1GHz to 10.6 GHz. Antenna also plays an essential role in UWB system. However, there are some difficulties in designing UWB antenna as compared to narrowband antenna. The primary requirement of UWB antennas is be able to operate over frequencies released by the FCC. Moreover, the satisfaction of radiation properties and good time domain performance over the entire frequency range are also necessary. In this thesis, de

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20

Hraga, Hmeda Ibrahim. "Modelling and design of compact wideband and ultra-wideband antennas for wireless communications : simulation and measurement of planer inverted F antennas (PIFAs) for contemporary mobile terminal applications, and investigations of frequency range and radiation performance of UWB antennas with design optimisation using parametric studies." Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/5668.

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The rapidly growing demand for UWB as high data rates wireless communications technology, since the Federal Communications Commission (FCC) allocated the bandwidth of UWB from 3.1GHz to 10.6 GHz. Antenna also plays an essential role in UWB system. However, there are some difficulties in designing UWB antenna as compared to narrowband antenna. The primary requirement of UWB antennas is be able to operate over frequencies released by the FCC. Moreover, the satisfaction of radiation properties and good time domain performance over the entire frequency range are also necessary. In this thesis, des

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21

Prince, Castro Jonathan Castro Jonathan Prince. "A global satellite system for mobile communications /." [S.l.] : [s.n.], 1995. http://library.epfl.ch/theses/?nr=1300.

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22

Haney, Timothy N. "Generation of Global System for Mobile (GSM) signals and their Time Difference of Arrival (TDOA) estimation." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA381073.

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Thesis (M.S. in Electircal Engineering) Naval Postgraduate School, June 2000.<br>"June 2000." Thesis advisor(s): Hippenstiel, Ralph ; Ha, Tri T. Includes bibliographical references (p. 77-78). Also available online.

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23

Lee, See Taur. "Quad-band global system for mobile communications complementary metal-oxide-semiconductor transmitter /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/6122.

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24

Ree, Leon P. "Integration of GPS navigation with mobile telephone communications using Bluetooth wireless technology." Thesis, Queensland University of Technology, 2002. https://eprints.qut.edu.au/36167/1/36167_Ree_2002.pdf.

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This thesis examines Bluetooth wireless technology, a technology for low-cost, low-range and low-power transfer of data between electronic devices. It overviews the technology by providing the history behind its development and then covers the various layers of its protocol. The uses of the technology, as specified during its development, are also presented. The future direction of Bluetooth wireless technology is summarised and a brief overview of some its main competitors is given. The main contribution of this thesis is a system that has been developed using Bluetooth wireless technology t

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25

Chan, Ka Chun. "A dual channel location estimation system for mobile computing." HKBU Institutional Repository, 2003. http://repository.hkbu.edu.hk/etd_ra/445.

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26

McAbee, Carson C. "Software-defined radio global system for mobile communications transmitter development for heterogeneous network vulnerability testing." Thesis, Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/38978.

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Approved for public release; distribution is unlimited.<br>The conversion from homogeneous global system for mobile communications (GSM) networks to heterogeneous GSM/universal mobile telecommunications system (UMTS) networks is rapidly expanding. Previous research identified vulnerabilities in the GSM network that were fixed in the UMTS standard; however, the mobile device must successfully access the UMTS network to take advantage of security improvements. Therefore, a possible vulnerability not addressed in either the GSM or UMTS standards is the potential for a malicious entity to prevent

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27

Pozzobon, Oscar. "Secure location services : vulnerability analysis and provision of security in location systems /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18315.pdf.

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28

Hill, Ryan Tebbutt. "Adaptive interfaces for mobile preference-based searching." Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/1248.

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Today's mobile computing devices provide a convenient means to search for points-of-interest (POIs) such as restaurants and accommodation. Mobile Preference-Based Search Tools (PBSTs) allow users to identify POIs such as restaurants or accommodation most suited to their needs and constraints using a mobile device. These devices however, have several design constraints including limited screen space and hardware capabilities. Adaptive User Interfaces (AUIs) have been proposed to address these issues but have not been extensively applied to mobile PBSTs such as mobile tourist guides. In addition

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29

Axelsson, Karin, and Cynthia Novak. "Support for Cell Broadcast as Global Emergency Alert System." Thesis, Linköping University, Department of Science and Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9491.

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<p>Cell Broadcast (CB) is a possible technical realisation of a global emergency alert system. It is a technique used for sending short text messages to all mobile stations (MSs) in a defined geographical area. An potential effect of using CB is the increase in battery consumption of the MS due to the fact that an extra channel has to be used to make the service available even when the network is otherwise congested. Another part of the service which leads to a potential problem is making CB messages available in different languages. Investigating these problems is the objective of this thesis

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30

Chu, Man Kin. "A hybrid approach for mobile location estimation in cellular radio networks." HKBU Institutional Repository, 2006. http://repository.hkbu.edu.hk/etd_ra/672.

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31

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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32

Van, der Walt Tjaart. "The management and implementation of a data terminal project on a global system for mobile communications / Tjaart van der Walt." Thesis, Potchefstroom University for Christian Higher Education, 1999. http://hdl.handle.net/10394/9613.

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With the demand for more control over remote systems and access to remote data increasing, there existed the need for a more efficient and low cost means of transmitting this data. Traditionally, small telemetry data packets have been transmitted using unreliable direct radio frequency links, or expensive copper connections or satellite communications. With the international infrastructure of the Global System for Mobile communication (GSM) networks and it's ever-improving coverage, GSM has become a viable solution as the data channel for data telemetry. With a data terminal, remote monitoring

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33

Madebwe, Charles. "An investigation into the role played by perceived security concerns in the adoption of mobile money services : a Zimbabwean case study." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1017933.

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The ubiquitous nature of mobile phones and their popularity has led to opportunistic value added services (VAS), such as mobile money, riding on this phenomenon to be implemented. Several studies have been done to find factors that influence the adoption of mobile money and other information systems. The thesis looks at factors determining the uptake of mobile money over cellular networks with a special emphasis on aspects relating to perceived security even though other factors namely perceived usefulness, perceived ease of use, perceived trust and perceived cost were also looked at. The rese

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34

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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35

Maharaj, Robin. "Design of asset tracking device with GPRS Interface." Thesis, Cape Peninsula University of Technology, 2019. http://hdl.handle.net/20.500.11838/2815.

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Thesis (Master of Engineering in Electrical Engineering)--Cape Peninsula University of Technology, 2018.<br>IOT devices have the potential to improve asset lifecycle optimization because of their ability to provide relevant real time data to high level applications. This data with minimal latency can assist asset managers to control the behaviour of assets and asset users to optimize asset lifecycle cost. There are many environments that require asset tracking devices but this design focussed on motor vehicles with auxiliary functions and apparatus. This research work documented the design of

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36

Nehme, Rimma V. "Continuous query processing on spatio-temporal data streams." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-082305-154035/.

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37

Cardoza, Andrew Robert. "Middleware for the SUNSAT field station." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52338.

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Thesis (MEng)--University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: SRMA currently used on the SUNSAT field station is an effective MAC layer protocol but lacks several features. Sufficient support for flexible communication, acknowledgement of individual data packets, simultaneous communication of multiple instances from a higher layer over a single underlying layer, and a robust FTP procedure to transfer large amounts of data are some of the features that the SUNSA T field station should cater for. ORBCOMM, GSM and WAP implementations are discussed. Some features from these implemen

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Van, Graan Sebastiaan Jan. "Network configuration improvement and design aid using artificial intelligence." Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-08292008-170524/.

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39

Jenkins, William George. "Real-time vehicle performance monitoring with data integrity." Master's thesis, Mississippi State : Mississippi State University, 2006. http://sun.library.msstate.edu/ETD-db/ETD-browse/browse.

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40

Cesário, Júnior José Maria 1979. "Um medidor de energia elétrica integrado em redes de comunicações." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267697.

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Orientadores: Varese Salvador Timóteo, Francisco José Arnold<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Tecnologia<br>Made available in DSpace on 2018-08-24T09:10:01Z (GMT). No. of bitstreams: 1 CesarioJunior_JoseMaria_M.pdf: 2596300 bytes, checksum: 6b11eb547957a0632bbc647946da04ce (MD5) Previous issue date: 2014<br>Resumo: A crescente evolução mundial dos sistemas de medição inteligentes, a liberação de regulamentações Brasileiras, incentivando a adoção de sistemas de medição de energia elétrica inteligentes, direcionaram a presente dissertação a propor um

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Berrios-Ayala, Mark. "Brave New World Reloaded: Advocating for Basic Constitutional Search Protections to Apply to Cell Phones from Eavesdropping and Tracking by Government and Corporate Entities." Honors in the Major Thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1547.

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Imagine a world where someone’s personal information is constantly compromised, where federal government entities AKA Big Brother always knows what anyone is Googling, who an individual is texting, and their emoticons on Twitter. Government entities have been doing this for years; they never cared if they were breaking the law or their moral compass of human dignity. Every day the Federal government blatantly siphons data with programs from the original ECHELON to the new series like PRISM and Xkeyscore so they can keep their tabs on issues that are none of their business; namely, the personal

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Qian, Hua 1982. "API : GSM/GPRS modem user interface / by." 2007. http://proquest.umi.com/pqdweb?did=1421621571&sid=8&Fmt=2&clientId=10361&RQT=309&VName=PQD.

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43

Van, der Merwe Pieter Ben. "Mobile commerce over GSM a banking perspective on security /." 2003. http://upetd.up.ac.za/thesis/available/etd-07202004-111814.

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44

Hou, Ching-Shiow, and 侯青秀. "Adaptive Blind Maximum-Likelihood Equalizer for Global System Mobile Communication(GSM)." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/31319443437325952763.

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碩士<br>義守大學<br>電機工程學系<br>88<br>In the project, a blind equalization by Maximum Likelihood Sequence Estimation (MLSE) is developed and investigated for the Global System Mobile Communication(GSM). The blind equalization techniques have the ability to retrieve the input data, and possibly the channel impulse response, given only the channel output without resorting to any training sequence. Many of the proposed blind techniques usually incorporate higher order statistical information of the received signal in the error criterion for channel updating. The results in hundreds and typical

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Barnard, Frederick Jacobus. "An integrated health, safety and environmental risk assessment model for the South African Global Systems Mobile Telecommunications (GSM) industry." Thesis, 2005. http://hdl.handle.net/10500/2385.

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More than one billion people, almost one in six of the world's population, are now using GSM mobile phones. The situation in South Africa is no different from that in the rest of the world. The rise of mobile telephone usage in South Africa has been driven by a combination of factors such as demand, sector reform, the licensing of new competition, and the emergence of major strategic investors, such as Vodacom and MTN. It was estimated that by March 2005 there should be approximately 20 million cellular customers in South Africa. The growth in the South African cellular market is prop

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Αυλωνίτης, Αθανάσιος, та Αναστάσιος Λαμπρόπουλος. "Υλοποίηση αλγορίθμου και προσομοίωση για τη βέλτιστη διαχείρηση φορητών συσκευών σε ετερογενή ασύρματα δίκτυα". Thesis, 2009. http://nemertes.lis.upatras.gr/jspui/handle/10889/2515.

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Η διπλωματική εργασία υλοποιεί και προσομοιώνει αλγόριθμο για τη βέλτιστη διαχείριση φορητών συσκευών σε ετερογενή ασύρματα δίκτυα. Στο πρώτο κεφάλαιο γίνεται μια εισαγωγή στις γενικές αρχές των Κυτταρικών Συστημάτων Κινητών Επικοινωνιών παρουσιάζοντας την βασική ιδέα των διαφόρων γενιών κινητών επικοινωνιών. Στο δεύτερο κεφάλαιο αναλύονται τα συστήματα τρίτης γενιάς – 3G. Στο τρίτο κεφάλαιο αναφέρονται τα τεχνικά χαρακτηριστικά, τα πλεονεκτήματα και οι σχέσεις της πλατφόρμας TETRA. Στο τέταρτο κεφάλαιο περιγράφεται το σύστημα και οι λειτουργίες του TETRAPOL καθώς και τα πλεονεκτήματα και οι υ

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47

Lin, Phone, and 林風. "Radio Resource Allocation for Global System for Mobile Communications." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/72233596697168664881.

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博士<br>國立交通大學<br>資訊工程系<br>89<br>Global System for Mobile Communication (GSM) provides telecommunication and data services to moving users, which is a digital cellular system developed by Group Special Mobile of Conference Europeenne des Postes et Telecommunications (CEPT) and its successor European Telecommunications Standard Institute (ETSI). To increase end user satisfaction and network quality perception, GSM is evolved to GSM phase 2+ for advanced services. These services include advanced speech services, group call and related services, General Packet Radio Service (GPRS) and Short Message

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Sharma, Sudeep. "On reducing call drop outs by improving Bit Error Rate performance in a GSM mobile communications system." 2008. http://hdl.handle.net/10106/923.

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Wu, Chen-Mao, and 吳承懋. "Automatic Frequency Tuning Loops for Global System for Mobile Communications and Instrumentation Amplifier." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/26gdk3.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>105<br>Two automatic frequency tuning loops (ATL) are mentioned in the thesis. One is for channel select filters of GSM transceivers, and the other is for a chopper instrumentation amplifier (IA). The ATL for channel select filters of GSM transceivers is based on the master-slave structure. The power consumption is 6.3 mW from a 1.8-V power supply. By controlling a 4 bit cap-array, the corner frequency can be varied from 186 kHz to 322 kHz with the frequency step of 7~12 kHz. The chip area is 1.475 mm 2. The other chip is a tunable gain chopper instrumentation amplif

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Vinhas, Nuno André Fontes. "Plataforma de Download de Skins UI para Apps Mobile." Master's thesis, 2014. http://hdl.handle.net/10316/35665.

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Dissertação de Mestrado em Engenharia Informática apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra<br>As operadoras de telecomunicações estão a perder um elevado número de receitas, já que os seus clientes começam a optar por soluções Over-The-Top (OTT), como o Skype, WhatsApp, Facebook ou Twitter, que oferecem melhores soluções a um custo reduzido. De forma a combater esta tendência, a Global System for Mobile Communications Association (GSMA) criou o Rich Comunication Suite (RCS) que consiste numa especificação de um conjunto de serviços - Voice Over IP (VoIP

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