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Dissertations / Theses on the topic 'Data transmission'

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1

Jimaa, Shibab A. "Data transmission over ADPCM links." Thesis, Loughborough University, 1990. https://dspace.lboro.ac.uk/2134/27385.

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The thesis is concerned with serial data transmission at a rate of 9600 bit/sec over a telephone channel containing a 32 kbit/sec Adaptive Differential Pulse Code Modulation (ADPCM) link , which has been proposed by CCITT as an international standard. The transmitted data signal is a 2400 band 16-level Quadrature Amplitude Modulated (QAM) signal. The ADPCM link introduces time-varying and at times severe nonlinear distortion into the data signal.
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2

Brine, A. "Direct sequence data transmission systems." Thesis, University of Kent, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379274.

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3

Adama, A. "High performance data transmission filters." Thesis, University of Essex, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371923.

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4

Parvez, Imtiaz. "Data Transmission in Quantized Consensus." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc271874/.

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In the world of networked system, average consensus is an important dimension of co-ordinate control and cooperation. Since the communication medium is digital, real value cannot be transmitted and we need to perform quantization before data transmission. But for the quantization, error is introduced in exact value and initial average is lost. Based on this limitation, my 16 bit quantization method (sending MSB in 1-4 cycle and MSB+LSB in 5th cycle) reduces error significantly and preserves initial average. Besides, it works on all types of graphs (star, complete, ring, random geometric graph)
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5

Johansson, Christian, and Marcus Karlsson. "Characterisation of a data transmission link." Thesis, Linköping University, Department of Science and Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2359.

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<p>This report is the result of a Master Thesis work that has been performed between October 2003 and March 2004. The purpose of the work was to evaluate a part of the signal chain in a product of Micronic Laser Systems AB. The evaluation was performed to obtain the characterisation for the signal chain, such as impedances and crosstalk. </p><p>The work started with a literature study in order to refresh and increase the knowledge that was needed before the practical work. Then measurements, computer aided simulations and comparisons between these were performed. </p><p>Measurements were perfo
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Yilmaz, Ayhan. "Robust Video Transmission Using Data Hiding." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1093509/index.pdf.

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Video transmission over noisy wireless channels leads to errors on video, which degrades the visual quality notably and makes error concealment an indispensable job. In the literature, there are several error concealment techniques based on estimating the lost parts of the video from the available data. Utilization of data hiding for this problem, which seems to be an alternative of predicting the lost data, provides a reserve information about the video to the receiver while unchanging the transmitted bit-stream syntax<br>hence, improves the reconstruction video quality without significant ex
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7

Tanriover, Cagri C. "Improved turbo codes for data transmission." Thesis, Lancaster University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288960.

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8

Bate, Stephen Donald. "Adaptive coding algorithms for data transmission." Thesis, Coventry University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303388.

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9

Brydon, A. N. "Medium rate data transmission at HF." Thesis, University of Manchester, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.506449.

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10

Razavi, S. H. "Data transmission over TACS cellular radio." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329178.

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11

Gray, Ashley. "Nonlinearly regenerated long haul data transmission." Thesis, Aston University, 2006. http://publications.aston.ac.uk/8019/.

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This thesis experimentally examines the use of different techniques for optical fibre transmission over ultra long haul distances. Its format firstly examines the use of dispersion management as a means of achieving long haul communications. Secondly, examining the use concatenated NOLMs for DM autosoliton ultra long haul propagation, by comparing their performance with a generic system without NOLMs. Thirdly, timing jitter in concatenated NOLM system is examined and compared to the generic system and lastly issues of OTDM amplitude non-uniformity from channel to channel in a saturable absorbe
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12

Butler, Brandon. "Reliable data transfer via frequency transmission." Thesis, Butler, Brandon (2017) Reliable data transfer via frequency transmission. Honours thesis, Murdoch University, 2017. https://researchrepository.murdoch.edu.au/id/eprint/40398/.

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Reliable single directional frequency data transfer is a method of electronic communication that is a potential alternative to a bi-directional or wired method. It is intended to determine whether or not single directional data transfer can be designed to perform at the same reliability level as other methods of data transmission. The reason for researching this is to see whether, two-way communication is necessary. Upon finding results to this question it will be determined if single directional frequency data transfer can be as power efficient as bi directional data transfer. It will also lo
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13

Fu, Haohuan. "Efficient multimedia data transmission over heterogeneous networks /." access full-text access abstract and table of contents, 2005. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?mphil-cs-b19887218a.pdf.

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Thesis (M. Phil.)--City University of Hong Kong, 2005.<br>"Submitted to Department of Computer Science in partial fulfillment of the requirements for the degree of Master of Philosophy." Includes bibliographical references (leaves 105-108).
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14

Wu, Min. "Multimedia data transmission for mobile wireless applications." Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/4132.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2005.<br>The 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 (November 14, 2006) Vita. Includes bibliographical references.
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15

Tyrberg, Andreas. "Data Transmission over Speech Coded Voice Channels." Thesis, Linköping University, Department of Electrical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6755.

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<p>The voice channel in mobile communication systems have high priority and are almost always available. By using the voice channel also for data transmissions it is possible to get the same availability as for voice calls. But due to speech codecs in the voice channel, regular modems can not be used and special techniques are needed to transmit data.</p><p>This thesis presents methods to transmit data over the voice channel in a GSM, UMTS or TETRA network. The focus has been on robust data transmission rather than high data bit rates. Approaches are introduced which improve the reliability fo
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Ragonnet-Cronin, Manon Lily. "Transmission networks inferred from HIV sequence data." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/16151.

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HIV in the UK in the 1980s was concentrated within men who have sex with men (MSM) and people who inject drugs (PWID) but heterosexual sex is now the most frequently reported risk behaviour. As these risk groups are associated with different virus populations, this is reflected in the subtype diversification of the UK epidemic, which was historically dominated by subtype B. I have made use of a national database of HIV sequences collected during routine clinical care, which also contains data on age, sex, route of exposure & ethnicity. The 2014 release of the UK HIV Drug Resistance Database co
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17

Yow, Thiam Poh. "Tunneled data transmission over wireless sensor networks." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Dec%5FYow.pdf.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, December 2007.<br>Thesis Advisor(s): McEachen, John C. ; Tummala, Murali. "December 2007." Description based on title screen as viewed on January 24, 2008. Includes bibliographical references (p. 73-74). Also available in print.
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18

Cotruta, Dragos. "Ultra High Data-Rate Optical Transmission Networks." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=104497.

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The thesis consists of two different topics: In part 1, the design of an optical system testbed for long haul transmission using a re-circulating loop, is presented. The testbed operates at 40 Gb/s, it simulates an 1800 km link, with optical amplifiers every 80 km, and 16-32 DWDM channels. The theoretical elements involved in the testbed design are reviewed. The optical components are described and selected. The optical system design parameters are presented as well as design targets and optimization parameters. The final implementation is presented and propagation simulations are performed wi
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19

Ammar, Bassem AbuBakr. "Error protection and security for data transmission." Thesis, Lancaster University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421640.

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20

Muhson, Said A. "Digital data transmission over mobile radio channels." Thesis, Loughborough University, 1987. https://dspace.lboro.ac.uk/2134/10838.

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The aim of this work is to study data transmission over a microwave digital mobile radio channel at 900 MHz, where the channel is subjected to multipath fading. Besides the fading, the other impairments assumed here are additive noise, co-channel interference and adjacent channel interference. Two modulation techniques are investigated in this work, namely Quadrature-Amplitude-Modulation (QAM) and Quadrature-Phase-Shift- Keying (QPSK). The channel is characterised digitally, assuming multipath Rayleigh fading in the presence of noise. The detection process studied here are near-maximum likelih
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21

Dissanayake, Maheshi Buddhinee. "Error robust video transmission using redundant data." Thesis, University of Surrey, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521720.

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22

SimoÌ, es LuiÌ s. Miguel Mendes. "Optimal data transmission on MIMO OFDM channels." Thesis, Monterey California. Naval Postgraduate School, 2008. http://hdl.handle.net/10945/3717.

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This thesis investigates the Physical Layer performance of single-input single-output (SISO) wireless communications systems, as well as multi antenna techniques such as multiple-input single-output (MISO) and multiple-input multiple-output (MIMO) systems, the last two utilizing the Alamouti-based space-time block coding (STBC) technique. All cases are based on the IEEE 802.16-2004 standard with OFDM using different values of coding rates. International Telecommunications Union (ITU) channel models are selected for the wireless channel in the simulation process. The particular setting we ar
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Wong, S. W. "Frequency hopping data transmission at high frequency." Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317262.

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24

ARELLANO, ANDY ALVAREZ. "TRANSMISSION AND RECEPTION OF DATA IN EHF." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=32212@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Nos últimos anos, as bandas de frequências nas comunicações sem fio estão começando a saturar devido ao incremento do tráfego e o aumento dos usuários, é devido a isso que, é necessário estudar as bandas de frequências que não estão sendo utilizadas nas áreas das comunicações como a banda milimétrica e sub-milimétrica. A transmissão de dados na banda EHF o banda milimétrica constitui uma possível solução para conseguir transmitir maiores quantidades de informação a altas veloc
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25

Marple, Steven Robert. "Improved error control techniques for data transmission." Thesis, Lancaster University, 2000. http://eprints.lancs.ac.uk/8074/.

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Error control coding is frequently used to minimise the errors which occur naturally in the transmission and storage of digital data. Many methods for decoding such codes already exist. The choice falls mainly into two areas: hard-decision algebraic decoding, a computationally-efficient method, and soft-decision combinatorial decoding, which although more complex offers better error-correction. The work presented in this Thesis is intended to provide practical decoding algorithms which can be implemented in real systems. Soft-decision maximum-likelihood decoding of Reed-Solomon codes can be ob
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26

Gouveia, Francisco de. "Transmission and presentation of medical sensor-data." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11767.

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Mestrado em Sistemas de Informação<br>This document covers the design, implementation and evaluation of a system that receives, processes and presents live streams of vital signs from sensors attached to a person’s body or in his surrounding environment. This is used either to prevent, analyse and/or act upon a critical scenario of emergency. Due to this critical scenarios where the system can be used, a distributed approach is implemented. Its aim is to reduce the risk of failure and give the possibility of transparent resource scaling according to the needs. Moreover, it is fully modularize
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27

Simões, Luís Miguel Mendes. "Optimal data transmission on MIMO OFDM channels." Monterey, Calif. : Naval Postgraduate School, 2008. http://edocs.nps.edu/npspubs/scholarly/theses/2008/Dec/08Dec%5FSimoes.pdf.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, December 2008.<br>Thesis Advisor(s): Cristi, Roberto. "December 2008." Description based on title screen as viewed on January 30, 2009. Includes bibliographical references (p. 81-82). Also available in print.
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28

Rizk, Ziad. "Digital data transmission over an HF channel." Thesis, Loughborough University, 1996. https://dspace.lboro.ac.uk/2134/7232.

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The thesis is concerned with detection, estimation techniques and a method of the adaptive adjustment of the equaliser, for use in a 4800bit/sec synchronous digital transmission system operating over a voice-band time-varying HF channel. Two main impairments are additive Gaussian noise and inter-symbol interference (ISI), which can be very severe at times. All techniques considered here are algorithms or processes that operate on sequences of sample values. Modern digital modems normally operate in this way, and the techniques described are of direct application to practical systems, and could
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29

LOMBARDI, FLAVIO. "Reliable Secure Multicast Data Transmission and Applications." Doctoral thesis, La Sapienza, 2005. http://hdl.handle.net/11573/917049.

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30

Siu, Yun-ming. "Design and performance analysis of data broadcasting systems /." Hong Kong : University of Hong kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B16027115.

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31

Lord, Dale, and Kurt Kosbar. "An Architecture for Sensor Data Fusion to Reduce Data Transmission Bandwidth." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/605790.

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International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, California<br>Sensor networks can demand large amounts of bandwidth if the raw sensor data is transferred to a central location. Feature recognition and sensor fusion algorithms can reduce this bandwidth. Unfortunately the designers of the system, having not yet seen the data which will be collected, may not know which algorithms should be used at the time the system is first installed. This paper describes a flexible architecture which allows the deployment of data reduction algorithms
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Salous, Mounther N. H. "Context-based image transmission." Thesis, University of Birmingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368121.

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33

Tay, Yeong Kiang Winston. "A performance analysis of management information due to data traffic provisioning in a SONET/SDH communications network." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Jun%5FTay.pdf.

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34

Hicks, William T. "IN FLIGHT DATA REDUCTION FOR REDUCED BANDWIDTH TRANSMISSION." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608423.

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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada<br>The desire to acquire large quantities of high speed vibration and acoustic data during aircraft testing is usually satisfied through on-board high speed recording methods. However there is often a need to have some of this data instantly available at the ground station for flight safety and other purposes. A Data Processor (DP) has been developed allowing an airborne data acquisition system to acquire large amounts of wideband analog data, process the data in real-time,
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35

Tan, B. T. "Digital transmission using transform techniques." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384556.

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36

蕭潤明 and Yun-ming Siu. "Design and performance analysis of data broadcasting systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B3123530X.

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37

Hinterseer, Martin, and Christoph Wegscheider. "ACQUISITION AND TRANSMISSION OF SEISMIC DATA OVER PACKET RADIO." International Foundation for Telemetering, 2005. http://hdl.handle.net/10150/605056.

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ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>Research on earthquakes and volcanos is of particular importance in seismic instable regions. To improve opportunities of research and civil defence, continuous coverage of seismic activities of a large area at a certain time is necessary. This paper deals with the issues concerning the collecting of environmental data by a number of autonomous field stations and their transmission to central
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38

Yamout, Salam 1963. "A NEW COMBINED ROUTING AND FLOW CONTROL ALGORITHM FOR DATA COMMUNICATION NETWORKS." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276558.

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The object of interest in this research is the evaluation of the combined routing and flow control scheme proposed by Muralidhar and Sundareshan. A slightly modified design using results from positive system theory is proposed as an attempt to improve the performance. Then a detailed performance evaluation of Muralidhar and Sundareshan's scheme and its modified version proposed here is conducted using discrete-event simulation. The application of positive system theory to the combined routing and flow control algorithm proposed by Muralidhar and Sundareshan proved to be quite effective in impr
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Lee, Man-yiu. "Implementation of government related electronic trade document services in Hong Kong /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18831242.

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40

Motahari, Bidgoli Seyed Mohammad Amin. "An Optical Design Configuration for Wireless Data Transmission." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2439.

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The concept of 2D barcodes is of great relevance for use in wireless data transmission between handheld electronic devices. In a typical setup, any file on a cell phone for example can be transferred to a second cell phone through a series of images on the LCD which are then captured and decoded through the camera of the second cell phone. In this research, a new approach for data modulation in 2D barcodes is introduced, and its performance is evaluated in comparison to other standard methods of barcode modulation. In the proposed method, Orthogonal Frequency Division Multiplexing (OFDM) modul
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41

Haddad, Nicholas. "Transmission of digital images using data-flow architecture." Ohio : Ohio University, 1985. http://www.ohiolink.edu/etd/view.cgi?ohiou1184007755.

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42

Zarimpas, Vasileios. "Multimedia data transmission over multiple wireless communication channels." Thesis, Lancaster University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497216.

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Modern mobile applications demand a communications network that is universally accessible at any time and able to adapt to the application needs. Meeting these requirements can present a considerable challenge. In order to access information ubiquitously, hardware manufacturers started to integrate many network access technologies in single small, light and low-power portable device. The main objective of this thesis is to exploit the availability of multiple wired and wireless communication channels for multimedia data transmission and location based services.
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Nelson, Christopher J. "Low complexity capacity-approaching codes for data transmission." Thesis, Lancaster University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556663.

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This thesis analyzes the design of low complexity capacity approaching codes suitable for data transmission. The research documented in this thesis describes new and novel design methods for three well-known error control coding techniques, Turbo codes, LDPC block codes and LDPC convolutional codes, which are suitable for implementation in a number of modem digital communication systems. Firstly, we present Partial Unit Memory (PUM) based Turbo codes. A variant of Turbo codes which encompasses the advantages of both block and convolutional codes. The design methods of PUM Turbo codes are prese
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尹翰卿 and Hon-hing Wan. "Efficient real-time scheduling for multimedia data transmission." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31227910.

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45

Beckmann, Paul Eric. "Difficulties with NTSC compatible quadrature digital data transmission." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14490.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1989.<br>Includes bibliographical references (leaves 74-76).<br>by Paul Eric Beckmann.<br>M.S.
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46

Mubinya, Antone Betrano Omondi. "Techniques to optimise data transmission in optical fibre." Thesis, Cape Peninsula University of Technology, 2011. http://hdl.handle.net/20.500.11838/2203.

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Thesis (MTech(Electrical Engineering))--Cape Peninsula University of Technology, 2011.<br>Due to the tremendous growth in data traffic and development in optical fiber transmission technologies, the limits of the transmission capacity available with the conventional and modulation techniques have been surpassed. The present work aims at pointing out in-terms of data transmission that Solitons can effectively be a waveguide of choice in transoceanic optical fiber communication systems. In this thesis Soliton has been identified as the ideal technique for data transmission in long transmis
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Jiang, Jing. "Capacity-approaching data transmission in MIMO broadcast channels." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/11208.

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This dissertation focuses on downlink multi-antenna transmission with packet scheduling in a wireless packet data network. The topic is viewed as a critical system design problem for future high-speed packet networks requiring extremely high spectral efficiency. Our aim is to illustrate the interaction between transmission schemes at the physical layer and scheduling algorithms at the medium access control (MAC) layer from a sum-capacity perspective. Various roles of multiple antennas are studied under channel-aware scheduling, including diversity, beamforming and spatial multiplexing. At a sy
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48

Béraud, Guillaume. "Modelling infectious agent transmission using social mixing data." Thesis, Lille 2, 2015. http://www.theses.fr/2015LIL2S040/document.

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L'évaluation économique de nouveaux vaccins exige de modéliser la transmission infectieuse au sein de la population, et donc des hypothèses sur la structure et la répartition des contacts. Les matrices de contact obtenues à partir d’enquête de population ont été déterminées pour 8 pays européens. Mais aucune donnée de ce type n'existe à ce jour pour la France. L’étude ComesF (Contact Matrix Estimation – France) vise à combler cette lacune.MéthodologieL'enquête s’est effectuée sur 3 périodes (Février-Mars, Avril, Mai-Avril) avec 278 participants communs à la première et dernière période. Les pa
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49

Ursini, Leonora. "Optical Chaotic Transmission Systems For Secure Data Communication." Doctoral thesis, Università degli studi di Padova, 2009. http://hdl.handle.net/11577/3425929.

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The optical chaos dynamics are investigated for obtaining the secure transmission of an information message. A detailed numerical analysis of an optical chaotic transmission system, based on the synchronization of two chaotic lasers is presented. At the transmitter, the chaotic waveform is superposed on the information message; at the receiver, the message is recovered by subtracting the synchronized chaotic wave from the received signal. The aim is the investigation of the system performance for various configurations. Original methods are also proposed for improving the performance. Finall
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Chung, Koo-Don. "Data transfer over multiplexed logical data links sharing a single physical circuit." Diss., Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/9201.

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