Tesis sobre el tema "WIRELES COMMUNICATION"
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Kodikara, Patabandi C. K. "Multimedia communications over 3G wireless communication systems". Thesis, University of Surrey, 2004. http://epubs.surrey.ac.uk/844270/.
Texto completoWang, Shendi. "Efficient transmission design for machine type communications in future wireless communication systems". Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/23647.
Texto completoBezuidenhout, Quintus. "Satellite communications strategy selection for optimal LEO satellite communication". Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71930.
Texto completoENGLISH ABSTRACT: A low earth orbit satellite system can be useful in numerous communication applications where physical connections are not possible. Communication time available from any point on earth to the satellite is less than one hour per day. This one hour is fragmented into smaller time slots due to the satellite orbiting. This is not much time to transfer data and there is even less time available to transfer data when there are other external factors affecting the system. It is thus crucial to optimise the satellite communications link so that more data can be transferred per orbit. The goal of this thesis is to improve the performance of a low earth orbit satellite communication channel by varying certain parameters of the system, such as the protocol used, modulation scheme, packet size, transmission power etc. and then to observe how these parameters influence the system. The protocols that were chosen to be implemented are CSMA-CA, CSMA-CA with DSSS technology and Round-Robin Polling. A simulator for each protocol was designed with the Opnet platform, so that specific parameters could be changed and the results observed, in order to optimise the communications link between the satellite and ground stations. The results showed that there is no particular configuration of modulation scheme, packet size, transmission power etc. presenting the best overall solution for LEO satellite communications. It must be considered what the specific LEO satellite application would be used for and the characteristics required by that specific application. A suitable configuration must subsequently be chosen from the set of configurations available to satisfy most of the application requirements.
AFRIKAANSE OPSOMMING: ’n Satelliet met ’n lae wentelbaan kan gebruik word in verskeie kommunikasie toepassings waar fisiese verbindinge nie noodwendig moontlik is nie. Die kommunikasietyd van enige punt van aarde af na die satelliet, is minder as een uur per dag. Hierdie tyd word nog verder verklein omdat die satelliet besig is om, om die aarde te wentel. ’n Uur is glad nie baie tyd om data oor te dra nie en in realiteit is daar nog minder tyd beskikbaar as daar eksterne faktore op die sisteem inwerk. Dus is dit baie belangrik om die satelliet kommunikasiekanaal te optimiseer sodat soveel moontlik data as moontlik oorgedra kan word per omwenteling. Die doel van hierdie tesis is om die deurset van die kommunikasiekanaal van n lae wentelbaan satelliet te optimiseer, deur verskeie parameters te verander soos, protokol wat gebruik word, modulasie skema, pakkie grootte, transmissiekrag ens. en dan waar te neem hoe dit die sisteem beïnvloed. Die protokolle wat geïmplementeer is, is CSMA-CA, CSMA-CA met DSSS tegnologie en Round-Robin Polling. ’n Simulator vir elke protokol was ontwerp in die Opnet simulasie platform, sodat die spesifieke parameters verander kon word om die resultate te bestudeer met die doel om die kommunikasiekanaal tussen die satelliet en grond stasies optimaal te benut. Die resultate het bewys dat daar geen spesifieke konfigurasie van modulasie skema, pakkie grootte, transmissiekrag ens. is wat die algehele beste oplossing is nie. Die spesifieke applikasie waarvoor die lae wentelbaan satelliet gaan gebruik word moet geanaliseer word sowel as die spesifieke karakteristieke van daai applikasie. Daarvolgens moet n unieke konfigurasie opgestel word wat meeste van die applikasie se behoeftes bevredig.
Muhovic, Admir. "Secure Wireless Communication". Thesis, KTH, Kommunikationssystem, CoS, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92023.
Texto completoBehoven och efterfrågan av mobil och trådlös utrustning är i dagsläget allt större. Fördelarna med att använda sig av trådlös kommunikation är enkla att inse. Att kunna ha tillgång till elektroniskt lagrad information oavsett var man än befinner sig är en stor fördel. Vidare implementeras trådlös kommunikation allt mer i det vardagliga arbetet samtidigt som utrustning för denna sorts kommunikation är i ständig utveckling. I slutändan är användandet av trådlös kommunikation väldigt praktiskt samtidigt som det är effektivt. Användandet av trådlös utrustning och kommunikation medför ett risktagande då denna typ av kommunikation allmänt är osäker. Detta eftersom teknologin fortfarande är i utvecklingsfasen. De i dagsläget aktuella trådlösa protokollen är sårbara för attacker och det är dessutom enkelt att avlyssna trafiken. Felaktig installation av utrustning bidrar dessutom också till att den trådlösa kommunikationen blir sårbar. En del av den IT-utrustning som idag finns tillgänglig ute på marknaden och som alltmer används inom FMV har möjlighet att kommunicera trådlöst med omgivningen. Exempel på sådan utrustning är bärbara datorer, PDA:er, mobiltelefoner mm. Denna typ av utrustning, dvs. trådlös utrustning, skall enligt FMVs informationssäkerhetspolicy godkännas från säkerhetssynpunkt innan den får tas i bruk på FMV. Det innebär att man utför en analys av vilka risker som är förknippade med användandet av trådlös utrustning samt att man identifierar adekvata skyddsåtgärder. Till sin hjälp använder man sig av Kraven på SäkerhetsFunktioner (KSF) som består av tekniska och/eller administrativa krav. Syftet med detta examensarbete var att undersöka om det finns möjlighet att använda trådlös utrustning på FMV, dvs. att denna används på interna LAN på FMV. Med andra ord skall den trådlösa utrustningen kunna erbjuda ett skydd motsvarande högst informationssäkerhetsklassen HEMLIG/RESTRICTED (H/R). Examensarbetet innefattar en analys av vilka säkerhetsfunktioner idag finns tillgängliga ute på marknaden och utvärderar huruvida dessa säkerhetsfunktioner uppfyller kraven givna i Kraven på SäkerhetsFunktioner (KSF). Resultatet är ett förslag på de bästa säkerhetsmekanismerna inom restriktionerna av KSF och den tillgängliga utrustningen. Examensarbetet föreslår en teknisk lösning med lämpliga säkerhetsmekanismer. Dess för- och nackdelar har analyserats. Examensarbetet presenterar dessutom ett antal (administrativa) säkerhets policies som hanterar säkerhetsaspekter som inte omhändertas av KSF.
Cottingham, David Naveen. "Vehicular wireless communication". Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611258.
Texto completoYin, Hujun. "Cross layer design and optimization of wireless networks /". Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/5904.
Texto completoDong, Lu. "MIMO Selection and Modeling Evaluations for Indoor Wireless Environments". Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19767.
Texto completoDagne, Carl, Johan Bengtsson y Ingemar Lindgren. "Microwave Wireless Communication System". Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-232.
Texto completoThe purpose of the project was to develop the hardware to a microwave wireless system working
at the frequency 2.45 GHz. The functionality of the system should also be easy to understand
since the system is to be used in an educational purpose. Much time has been spent impedance
matching components, a task that proved to be harder than we expected. Other work that has been
is layout of all parts, filter construction and the writing of an easy to understand thesis. After the
parts had been completed, they were tested in a network analyzer and/or spectrum analyzer.
Successful full system test has been done up to 400 meters, the length the system is to be used
for.
Herbert, Steven John. "Wireless communication in vehicles". Thesis, University of Cambridge, 2015. https://www.repository.cam.ac.uk/handle/1810/280675.
Texto completoJiang, Junyi. "Optical wireless communication systems". Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/387239/.
Texto completoDu, Hao. "Optical wireless MIMO communication". Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/70945/.
Texto completoКovalenko, Viktoriya y Oksana Tykhenko. "Wireless communication safety analysis". Thesis, Proceedings the Seventh World Congress «Aviation in the XXI-st Century», September 19 – 21, 2016. – P. 5.4.46 – 5.4.48, 2016. http://er.nau.edu.ua/handle/NAU/29355.
Texto completoGao, Zihao. "Wireless Powered Communication Networks". Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/17169.
Texto completoLiu, Cheng. "Advanced system design and signal processing techniques for converged high-speed optical and wireless applications". Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49058.
Texto completoGuice, Robert J. Munoz Ramon J. "IEEE 802.16 Commercial Off The Shelf (COTS) technologies as a compliment to Ship To Objective Maneuver (STOM) communications". Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Sep%5FGuice.pdf.
Texto completoThesis advisor(s): Rex Buddenberg. Includes bibliographical references (p. 103-105). Also available online.
Athukorala, Lakshman. "Miniaturised bandpass filters for wireless communications". Thesis, University of Westminster, 2012. https://westminsterresearch.westminster.ac.uk/item/8z606/miniaturised-bandpass-filters-for-wireless-communications.
Texto completoYamashita, Shota. "Coexistence of Wireless Communication and Non-communication Systems". Kyoto University, 2018. http://hdl.handle.net/2433/232420.
Texto completo鄭价昌 y Kai-cheong Chang. "Adaptive channel equalisation technique for wideband time-division multiple access digital mobile radio communications systems". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31212888.
Texto completoManescu, Corneliu. "Video and voice coding for mobile ad-hoc collaboration". [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0000740.
Texto completoChang, Kai-cheong. "Adaptive channel equalisation technique for wideband time-division multiple access digital mobile radio communications systems /". Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17590371.
Texto completoLo, Chi-ming. "Analytical evaluation of wireless digital communication performance over fading channels". Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23295211.
Texto completoNeo, Soo Sim Daniel. "Free space optics communication for mobile military platforms". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Dec%5FNeo.pdf.
Texto completoBenn, Leon Jacobus. "A Strategic business model for the introduction of mobile data services in an emerging economy the case of the South African market /". Pretoria : [s.n.], 2004. http://upetd.up.ac.za/thesis/available/etd-06102005-093913.
Texto completoKrause, Wolfram O. "Wireless communication networks : structure and dynamics of wireless multi-hop ad hoc communication networks /". Lichtenberg (Odenw.) : Harland media, 2006. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=015507583&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Texto completoSchuster, Ulrich G. "Wireless communication over wideband channels /". Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17565.
Texto completoLee, Kah Ping. "Turbo equalization in wireless communication". Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/5844.
Texto completoThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (July 11, 2006) Includes bibliographical references.
Pakravan, Mohammad Reza. "Indoor infrared wireless communication channels". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0016/NQ57061.pdf.
Texto completoRay, Adam A. Roppel Thaddeus A. "Cooperative robotics using wireless communication". Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Fall/Thesis/RAY_ADAM_44.pdf.
Texto completoLu, Yang. "UWB antennas for wireless communication". Thesis, University of Liverpool, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.569654.
Texto completoLiu, Luyan. "Wireless Communication in Smart Housing". Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-37631.
Texto completoBourget, Marc A. (Marc Anthony) 1979. "Expanding the wireless communication paradigm". Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/87185.
Texto completo"June 2002."
Includes bibliographical references (leaves 44-45).
by Marc A. Bourget.
M.Eng.
Music, Craig 1978. "Expanding the wireless communication paradigm". Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/8077.
Texto completoDing, Yuan. "Directional modulation secured wireless communication". Thesis, Queen's University Belfast, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.676283.
Texto completoSchuster, Ulrich G. "Wireless communication over wideband channels". Konstanz Hartung-Gorre, 2008. http://d-nb.info/993286984/04.
Texto completoAlhartomi, Mohammed. "Collaborative optical wireless communication systems". Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/13153/.
Texto completoZHANG, LINCHAO. "Reliable Communication in Wireless Networks". Doctoral thesis, Politecnico di Torino, 2014. http://hdl.handle.net/11583/2537290.
Texto completoToni, Laura <1982>. "Adaptive wireless multimedia communication systems". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/2117/1/Laura_Toni_tesi.pdf.
Texto completoToni, Laura <1982>. "Adaptive wireless multimedia communication systems". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/2117/.
Texto completoCavallari, Riccardo <1986>. "Human-Centric Wireless Communication Networks". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7444/1/tesi.pdf.
Texto completoCavallari, Riccardo <1986>. "Human-Centric Wireless Communication Networks". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7444/.
Texto completoSun, Zhi. "Reliable and efficient communication in wireless underground sensor networks". Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41150.
Texto completoBoubaker, Nejib. "Ultra wide bandwidth spread spectrum impulse radio for wireless multi-access communications /". View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202005%20BOUBAK.
Texto completoSkidmore, Roger Ray. "A Comprehensive Method and System for the Design and Deployment of Wireless Data Networks". Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/27611.
Texto completoPh. D.
Stanković, Veljko. "Multi-user MIMO wireless communications". [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=985258039.
Texto completoSchmitt, Michael Philipp. "ARQ systems for wireless communications". Phd thesis, [S.l. : s.n.], 2002. http://elib.tu-darmstadt.de/diss/000269.
Texto completoKim, Kihong. "Interference Mitigation in Wireless Communications". Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7647.
Texto completoAnderson, Alan John. "Channel prediction in wireless communications". Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/16188.
Texto completoShaheem, Asri. "Iterative detection for wireless communications". University of Western Australia. School of Electrical, Electronic and Computer Engineering, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0223.
Texto completoZyambo, Emmanuel Baleke. "High-speed wireless infrared communications". Thesis, University of Oxford, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275377.
Texto completoParand, Farivar. "Cellular optical wireless communications systems". Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270654.
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