Dissertations / Theses on the topic 'Wireless communications'
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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/.
Full textAthukorala, 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.
Full textStanković, Veljko. "Multi-user MIMO wireless communications." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=985258039.
Full textSchmitt, Michael Philipp. "ARQ systems for wireless communications." Phd thesis, [S.l. : s.n.], 2002. http://elib.tu-darmstadt.de/diss/000269.
Full textKim, Kihong. "Interference Mitigation in Wireless Communications." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7647.
Full textAnderson, Alan John. "Channel prediction in wireless communications." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/16188.
Full textShaheem, 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.
Full textZyambo, Emmanuel Baleke. "High-speed wireless infrared communications." Thesis, University of Oxford, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275377.
Full textParand, Farivar. "Cellular optical wireless communications systems." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270654.
Full textLeuca, Magdalena. "Security issues in wireless communications." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10266.
Full textIncludes bibliographical references (leaves 99-103).
by Magdalena Leuca.
M.Eng.
Joshi, Harita. "Modulation for optical wireless communications." Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/55521/.
Full textDiaz, Ariel Gomez. "Ultrafast indoor optical wireless communications." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:2bd2257f-ae58-40f0-a10f-04e7b5336519.
Full textSohaib, Sarmad. "Energy efficient cooperative wireless communications." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/energy-efficient-cooperative-wireless-communications(a852e1e2-04ad-4311-8004-53babe529e1b).html.
Full textDong, Chen. "Buffer-aided multihop wireless communications." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/364737/.
Full textOthman, Noor Shamsiah. "Wireless speech and audio communications." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/64488/.
Full textCao, Ping. "UWB antennas for wireless communications." Thesis, University of Liverpool, 2013. http://livrepository.liverpool.ac.uk/14715/.
Full textAlmoualem, Firas, and Firas Almoualem. "SDR - Based Resilient Wireless Communications." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/625342.
Full textAlhalabi, Ashraf S. A. <1985>. "Device-To-Device Wireless Communications." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amsdottorato.unibo.it/7845/1/Thesis_%D9%90Ashraf.pdf.
Full textGong, P. "Energy efficient and secure wireless communications for wireless sensor networks." Thesis, City, University of London, 2017. http://openaccess.city.ac.uk/18026/.
Full textChan, Wing Chau. "Performance limits of MIMO wireless communications /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?ECED%202006%20CHANW.
Full textKim, JoonBeom. "Iterative Channel Estimation for Wireless Communications." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14064.
Full textTsimbalo, Evgeny. "Energy-constrained wireless communications for IoT." Thesis, University of Bristol, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.723512.
Full textPakravan, Mohammad M. Reza. "Broadband indoor wireless communications using infrared." Thesis, University of Ottawa (Canada), 1994. http://hdl.handle.net/10393/9534.
Full textPham, Tien D. "Adaptive antennas in multipath wireless communications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq35282.pdf.
Full textZamiri-Jafarian, Hossein. "Adaptive MLSDE receivers for wireless communications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/NQ41537.pdf.
Full textZuazola, Garcia. "Miniature antennas for mobile wireless communications." Thesis, University of Kent, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.591097.
Full textMuller, Andreas. "Message passing algorthms in wireless communications." Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.544340.
Full textMuller, Andreas. "Message passing algorithms in wireless communications." Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.544339.
Full textMcDiarmid, Alisdair. "Anonymous communications in wireless access networks." Thesis, University of Strathclyde, 2006. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21649.
Full textXia, Bin, and 夏斌. "Enhanced techniques for broadband wireless communications." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B29144231.
Full textGhandi, Mohammad Mahdi. "Layered video coding for wireless communications." Thesis, University of Essex, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426012.
Full textMai, Huiheng. "Iterative channel estimation for wireless communications." Thesis, University of York, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433681.
Full textDhomeja, Sheyam Lal. "CDMA communications over wireless infrared channels." Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287004.
Full textNordberg, Jörgen. "Signal Enhancement in Wireless Communications Systems." Doctoral thesis, Ronneby : Blekinge Institute of Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-00229.
Full textEtt av områdena inom telekommunikation som har ökat mest de senaste åren är radio kommunikation. Det finns många olika varianter av trådlösa radio system, men de har alla en sak gemensamt, de överför information/data via ett radiogränssnitt. Signaler som sänds över en radiokanal kommer på grund av många olika anledningar att bli störda eller distorderade. I Jörgen Nordbergs doktorsavhandling ?Signal Enhancement in Wireless Communication Systems? presenteras flera metoder för att förbättra kvaliten i de mottagna signalerna vilket ger betydande kvalitetsförbättring. Huvuddelen av denna doktorsavhandling behandlar interferensundertrycking, d.v.s. hur man undertrycker oönskad störning på den egna radiokanalen. Dessa metoder är baserade på användning av flera antenner i mottagaren. Genom att ta emot signalerna med flera antenner så kan metoder såsom diversitetskombinering, adaptiva antenner, lobformning, signal separation användas för att förbättra kvaliteten i den mottagna signalen. Om mottagaren har en antenn så behövs oftast kanalutjämning för att förbättra den mottagna signalen och undertrycka intersymbolinterferens. Eftersom kanalutjämning är en typ av inversfiltrering leder detta ofta till estimering av filterparametrar av hög ordning. Estimeringsproblem av hög ordning leder ofta till komplexitetsproblem och konvergensproblem hos estimerings algoritmen. För att motverka dessa problem så presenteras i denna avhandling en kanalutjämnare som är baserad på subbandsteknik. I denna kanalutjämnare så delas den mottagna signalen upp i flera frekvensband (subband) som decimeras till en takt som motsvarar subbandets bandbredd varefter filterparametrarna estimeras i denna lägre takt. Därvid har estimeringsproblemet delats upp i flera små problem som kan hanteras enklare.
Jensen, Michael A., and Michael D. Rice. "SPACE-TIME CODING FOR WIRELESS COMMUNICATIONS." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/605605.
Full textSignal fading and intersymbol interference created by multipath propagation have traditionally limited the throughput on wireless communications systems. However, recent research has demonstrated that by using multiple antennas on both transmit and receive ends of the link, the multipath channel can actually be exploited to achieve increased communication throughput over single-antenna systems. This paper provides an introductory description of such multi-antenna communications systems, focusing on basic explanations of how they achieve capacity gains. Computed and measured capacity results are used to demonstrate the potential of these systems.
Wang, Kezhi. "Performance analysis for cooperative wireless communications." Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/66981/.
Full textYuan, Wei Wen. "Optical wireless communications for micro-machines." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:d0f2c779-fc66-4436-a831-fa65e1b36d5b.
Full textMao, Chunxu. "Integrated filtering antennas for wireless communications." Thesis, University of Kent, 2017. https://kar.kent.ac.uk/69475/.
Full textAhmad, Zaheer. "Video header compression for wireless communications." Thesis, University of Surrey, 2006. http://epubs.surrey.ac.uk/843682/.
Full textSpilling, Anders Gil. "Self-organisation in future wireless communications." Thesis, University of Bristol, 2000. http://hdl.handle.net/1983/1d349f3a-d733-4a03-9d18-9e04d0c44aa1.
Full textAlizadeh, Ardalan. "Cognitive Communications for Emerging Wireless Systems." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1470226402.
Full textWu, Yue. "Active filter design for wireless communications /." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486474078051051.
Full textPinheiro, João Paulo Rocha. "Wideband power amplifier for wireless communications." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/21658.
Full textEm anos recentes, com o desenvolvimento das tecnologias de telecomunicações, a alocação do espetro de frequências tem crescido consideravelmente. Os utilizadores finais exigem aparelhos capazes de operar com tecnologias que suportam taxas de transmissão cada vez mais elevadas (3G e 4G LTE) com compatibilidade com tecnologias como 2G GSM e 2.5G GPRS. Para que um telemóvel possa operar com todas as referidas tecnologias necessita de até 5 PAs para cada uma, resultando em maiores custos e espaço ocupado devido ao numero de dispositivos usados, para não mencionar o problema logístico para o fabricante do telemóvel já que cada um destes dispositivos ´e, por norma, produzido por diferentes fabricantes. Como as referidas tecnologias têm de coexistir, é necessário que as estações base continuem a receber e transmitir sinais no largo espetro de frequências alocado. O PA numa estacão base é o elemento mais dissipativo e a necessidade de usar diversos amplificadores implica, além do custo dos componentes, um elevado consumo de potência DC que se traduz em custos de energia substanciais para a empresa de telecomunicações. Portanto, o uso de um transmissor para cada frequência central está a tornar-se inaceitável. Um amplificador de banda larga capaz de operar dentro do espetro de frequências alocado e de suportar todas as normas de cada tecnologia, garantindo elevados níveis de potência de saída, linearidade e eficiência pode ser a solução para estes problemas. Esta tese foca-se no estudo do amplificador de banda larga. É apresentada uma comparação teórica de diversas arquiteturas de amplificadores de banda larga e é descrito e analisado o projeto e teste de um amplificador adaptado relativamente. São ainda conduzidos testes de depuração por forma a determinar as razões para a diferença observada entre as simulações e o os resultados medidos.
In recent years, with the development of telecommunication technologies, the frequency spectrum allocation has grown considerably. End users are requiring devices capable of operating with technologies supporting increasingly high data rates (3G and 4G LTE) with backward compatibility with technologies such as 2G GSM and 2.5G GPRS. For a mobile phone to work with all the referred technologies it must have up to ve PAs for each one, resulting in higher costs and occupied space due to the number of devices used, not to mention the logistic problem for the phone manufacturer since each of these devices is usually produced by di erent manufacturers. Since the referred technologies have to coexist, base stations are required to keep receiving and transmitting signals in the broad frequency spectrum allocated. A PA in a base station is the most dissipative element, and the need for several ampli ers implies, other than component cost, high DC power consumption which translates into substantial energy costs for a telecommunication company. Therefore, the use of a transmitter for each center frequency is becoming unacceptable. A wideband ampli er capable of operating within the allocated frequency spectrum and supporting all technology standards, granting high output power levels, linearity and e ciency can be the solution for these problems. This thesis focus on the study of the wideband ampli er. A theoretical comparison of several wideband ampli er architectures is presented and the design and testing of a reactively matched ampli er is further described and analyzed. Debugging tests are conducted in order to determine the reasons for the diferences observed between simulations and the measured results.
Elissaios, Georgios. "Array communications in wireless sensor networks." Thesis, Imperial College London, 2008. http://hdl.handle.net/10044/1/11482.
Full textMengot, Azibananye Massem. "Antenna array calibration in wireless communications." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/11476.
Full textKrishnamurthy, Srikanth V. "System aspects of broadband wireless communications /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1997. http://wwwlib.umi.com/cr/ucsd/fullcit?p9820861.
Full textChan, Chiu Lun. "Antennas for spectrum efficient wireless communications /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202003%20CHANC.
Full textIncludes bibliographical references (leaves 68-72). Also available in electronic version. Access restricted to campus users.
Wang, Chengzhou. "CMOS power amplifiers for wireless communications /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2003. http://wwwlib.umi.com/cr/ucsd/fullcit?p3112826.
Full textPeel, Christian B. "Studies in multiple-antenna wireless communications /." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd331.pdf.
Full textAlresheedi, Mohammed Thamer. "Adaptation techniques in optical wireless communications." Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/6396/.
Full text