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Дисертації з теми "Digital techniques"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 25 липня 2025

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1

England, Janine V. "Digital filter design techniques/." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/23177.

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An overview and investigation of the more popular digital filter design techniques are presented, with the intent of providing the filter design engineer a complete and concise source of information. Advantages and disadvantages of the various techniques are discussed, and extensive design examples used to illustrate their application to specific design problems. Both IIR (Butterworth, Chebyshev and elliptic), and FIR (Fourier coefficient design, windows and frequency sampling) design methods are featured, as well as, the Optimum FIR Filter Design Program of Parks and McClellan, and the Minimu

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2

Ge, He. "Flexible Digital Authentication Techniques." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5277/.

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Abstract This dissertation investigates authentication techniques in some emerging areas. Specifically, authentication schemes have been proposed that are well-suited for embedded systems, and privacy-respecting pay Web sites. With embedded systems, a person could own several devices which are capable of communication and interaction, but these devices use embedded processors whose computational capabilities are limited as compared to desktop computers. Examples of this scenario include entertainment devices or appliances owned by a consumer, multiple control and sensor systems in an automobil

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3

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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4

Liu, Wei. "Digital beamforming employing subband techniques." Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422950.

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5

Shankar, Udaya. "Implementation of digital modulation techniques using direct digital synthesis." Master's thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-03302010-020333/.

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6

Majidi, Rabeeh. "DIGITALLY ASSISTED TECHNIQUES FOR NYQUIST RATE ANALOG-to-DIGITAL CONVERTERS." Digital WPI, 2015. https://digitalcommons.wpi.edu/etd-dissertations/275.

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With the advance of technology and rapid growth of digital systems, low power high speed analog-to-digital converters with great accuracy are in demand. To achieve high effective number of bits Analog-to-Digital Converter(ADC) calibration as a time consuming process is a potential bottleneck for designs. This dissertation presentsa fully digital background calibration algorithm for a 7-bit redundant flash ADC using split structure and look-up table based correction. Redundant comparators are used in the flash ADC design of this work in order to tolerate large offset voltages while minimizing s

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7

Suen, Tsz-yin Simon, and 孫子彥. "Curvature domain stitching of digital photographs." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38800901.

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8

Keskinarkaus, A. (Anja). "Digital watermarking techniques for printed images." Doctoral thesis, Oulun yliopisto, 2013. http://urn.fi/urn:isbn:9789526200583.

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Abstract During the last few decades, digital watermarking techniques have gained a lot of interest. Such techniques enable hiding imperceptible information to images; information which can be extracted later from those images. As a result, digital watermarking techniques have many interesting applications for example in Internet distribution. Contents such as images are today manipulated mainly in digital form; thus, traditionally, the focus of watermarking research has been the digital domain. However, a vast amount of images will still appear in some physical format such as in books, poster

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9

Gou, Hongmei. "Digital forensic techniques for graphic data." College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/7361.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.<br>Thesis research directed by: Electrical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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10

Honary, Souroush. "Advanced techniques for digital video broadcasting." Thesis, University of Leeds, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509846.

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11

Damianos, J. "Testing hybrid circuits using digital techniques." Thesis, University of Southampton, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.483107.

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12

Kempson, C. N. "Statistical techniques for digital modulation recognition." Thesis, Cranfield University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277938.

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Automatic modulation recognition is an important part of communications electronic monitoring and surveillance systems where it is used for signal sorting and receiver switching. ' This thesis introduces a novel application of multivariate statistical techniques to the problem of automatic modulation classification. The classification technique uses modulation features derived from time-domain parameters of instantaneous signal envelope, frequency and phase. Principal component analysis (PCA) is employed for data reduction and multivariate analysis of variance (MANOVA) is used to investigate t

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13

Kale, Izzet. "Techniques for reducing digital filter complexity." Thesis, University of Westminster, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319680.

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14

Webb, William. "QAM techniques for digital mobile radio." Thesis, University of Southampton, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385448.

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15

Traiola, Marcello. "TEST TECHNIQUES FOR APPROXIMATE DIGITAL CIRCUITS." Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTS060.

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Анотація:

Au cours des dernières décennies, la demande d’efficacité informatique n’a cessé de croître. L’affirmation d’applications de nouvelle génération consommatrices d’énergie d’un côté, et d’appareils portables basse consommation de l’autre, exige un nouveau paradigme informatique capable de faire face aux exigences concurrentes des défis technologiques actuels. Ces dernières années, plusieurs études sur les applications dites de "Recognition, Mining and Synthesis (RMS)" ont été menées. Une particularité très intéressante a été identifiée : la résilience intrinsèque de ces applications. Une telle p

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16

Chan, Tsang Hung. "Digital signal processing in optical fibre digital speckle pattern interferometry." HKBU Institutional Repository, 1996. http://repository.hkbu.edu.hk/etd_ra/269.

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17

Samsheerali, P. T. "Investigations on improved digital holographic imaging techniques." Thesis, IIT Delhi, 2015. http://localhost:8080/iit/handle/2074/6928.

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18

Arani, Faramarz Shayan. "Trellis coded modulation techniques." Thesis, University of Warwick, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387324.

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19

Shi, Junhao. "Boolean techniques in testing of digital circuits." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=98361816X.

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20

Alahakoon, Sanath. "Digital motion control techniques for electrical drives." Doctoral thesis, KTH, Electric Power Systems, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2954.

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<p>Digital motion control area toady is a well-established one,which is believed to be first initiated by power electronicengineers in the early seventies. Modern digital controltheory, advances in digital signal processor andmicrocontroller technology and recent developments in powerelectronic devices have made this field a very competitive one.The objective of this thesis is to present some digital motioncontrol techniques that can be applied for electrical drives.This is done by investigating two motion control problemsassociated with electrical drives; namely, precision motioncontrol and s

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21

Rockliff, Simon C. "Frequency hopping techniques for digital mobile radio /." Title page, contents and abstract only, 1990. http://web4.library.adelaide.edu.au/theses/09PH/09phr683.pdf.

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22

Brisbane, Gareth Charles Beattie. "On information hiding techniques for digital images." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20050221.122028/index.html.

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23

Papaspiridis, Alexandros. "Digital signal processing techniques for gene prediction." Thesis, Imperial College London, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.590037.

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The purpose of this research is to apply existing Digital Signal Processing techniques to DNA sequences, with the objective of developing improved methods for gene prediction. Sections of DNA sequences are analyzed in the frequency domain and frequency components that distinguish intron regions are identified (21t/lOA). Novel detectors are created using digital filters and auto correlation, capable of identifying the location of intron regions in a sequence. The resulting signal from these detectors is used as a dynamic threshold in existing gene detectors, resulting in an improved accuracy of

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24

Plummer, Andrew Robert. "Digital control techniques for electro-hydraulic servosystems." Thesis, University of Bath, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280263.

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25

Sari, Hayri. "Underwater acoustic voice communications using digital techniques." Thesis, Loughborough University, 1997. https://dspace.lboro.ac.uk/2134/13854.

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Анотація:

An underwater acoustic voice communications system can provide a vital communication link between divers and surface supervisors. There are numerous situations in which a communication system is essential. In the event of an emergency, a diver's life may depend on fast and effective action at the surface. The design and implementation of a digital underwater acoustic voice communication system using a digital signal processor (DSP) is described. The use of a DSP enables the adoption of computationally complex speech signal processing algorithms and the transmission and reception of digital dat

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26

Bibby, Geoffrey Thomas. "Digital image processing using parallel processing techniques." Thesis, Liverpool John Moores University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304539.

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27

Greenfield, Richard Glentworth. "Application of digital techniques to loadspeaker equalization." Thesis, University of Essex, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292175.

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28

Amphlett, Robert W. "Multiprocessor techniques for high quality digital audio." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337273.

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29

Pitchford, Randall S. "Telemetry Simulation Using Direct Digital Synthesis Techniques." International Foundation for Telemetering, 1990. http://hdl.handle.net/10150/613393.

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International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>Direct digital synthesis technology has been employed in the development of a telemetry data simulator constructed for the Western Space and Missile Center (WSMC). The telemetry simulator, known as TDVS II, is briefly described to provide background; however, the principal subject is related to the development of programmable synthesizer modules employed in the TDVS II system. The programmable synthesizer modules (or PSMs) utilize direct digital synthesiz

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30

Sirousi, Sorena. "Distributed Digital Beamforming Techniques in Satellite Networks." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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Анотація:

In recent years, satellite communication systems, in particular LEO constellations, have been subject of increased attention in the new space race; this is substantiated by the numerous industrial endeavors aiming at providing high-speed broadband access anywhere at anytime, E.G., SpaceX Starlink. In 5G systems, there has been an increased focus to integrate a non-terrestrial component into the broader wireless communication infrastructure. It is expected that this trend will continue in the future. Satellites can provide coverage in areas where a terrestrial infrastructure is congested or una

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31

Bhadra, Jayanta. "Abstraction techniques for verification of digital designs." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3024993.

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32

Marokkey, Sajan Raphael. "Digital techniques for dynamic visualization in photomechanics." Thesis, Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B14670896.

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33

Emmanouilidi, Archontia [Verfasser], and Wael [Akademischer Betreuer] Att. "Accuracy of various intraoral digital impression techniques." Freiburg : Universität, 2020. http://d-nb.info/1215031769/34.

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34

Musoke, David. "Digital image processing with the Motorola 56001 digital signal processor." Scholarly Commons, 1992. https://scholarlycommons.pacific.edu/uop_etds/2236.

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Анотація:

This report describes the design and testing of the Image56 system, an IBM-AT based system which consists of an analog video board and a digital board. The former contains all analog and video support circuitry to perform real-time image processing functions. The latter is responsible for performing non real-time, complex image processing tasks using a Motorola DSP56001 digital signal processor. It is supported by eight image data buffers and 512K words of DSP memory (see Appendix A for schematic diagram).

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35

Cloete, Eric. "Nonlinear smoothers for digital image processing." Thesis, Cape Technikon, 1997. http://hdl.handle.net/20.500.11838/2073.

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Thesis (DTech(Business Informatics))--Cape Technikon, Cape Town, 1997<br>Modem applications in computer graphics and telecommunications command high performance filtering and smoothing to be implemented. The recent development of a new class of max-min selectors for digital image processing is investigated with special emphasis on the practical implications for hardware and software design.

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36

Nell, Raymond D. "Design and analysis of a system for 3D fabrication of synthetic anatomical structures." Thesis, Cape Peninsula University of Technology, 2005. http://hdl.handle.net/20.500.11838/1149.

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Thesis (MTech (Electrical Engineering))--Cape Peninsula University of Technology, 2005<br>This dissertation is the reading and display ofDICOM medical images (Digital Imaging and Communication in Medicine) and production ofmodel artifacts of anatomical organs using Rapid Prototyping An algorithm to read these DICOM medical images was developed. It also displays pixel information ofthe image. When the DICOM image has been read and displayed, the information required to produce the anatomical artifact is extracted. These 2D slice images, MRI (Magnetic Resonance Imaging) and CT Scan (Compu

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37

Rosenthal, Jordan. "Filters and filterbanks for hexagonally sampled signals." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/13347.

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38

Delic-Ibukic, Alma. "Digital Background Calibration Techniques for High-Resolution, Wide Bandwidth Analog-to-Digital Converters." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/Delic-IbukicA2008.pdf.

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39

Karanicolas, Andrew N. (Andrew Nicholas). "Digital self-calibration techniques for high-accuracy, high speed analog-to-digital converters." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/12010.

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Анотація:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.<br>Includes bibliographical references (leaves 219-224).<br>by Andrew Nicholas Karanicolas.<br>Ph.D.

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40

Solanke, Abiodun Abdullahi <1983&gt. "Digital Forensics AI: on Practicality, Optimality, and Interpretability of Digital Evidence Mining Techniques." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/10400/1/SOLANKE-ABIODUN-ABDULLAHI-Tesi.pdf.

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Анотація:

Digital forensics as a field has progressed alongside technological advancements over the years, just as digital devices have gotten more robust and sophisticated. However, criminals and attackers have devised means for exploiting the vulnerabilities or sophistication of these devices to carry out malicious activities in unprecedented ways. Their belief is that electronic crimes can be committed without identities being revealed or trails being established. Several applications of artificial intelligence (AI) have demonstrated interesting and promising solutions to seemingly intractable societ

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41

Farahati, Nader. "New techniques for adaptive equalisation." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302950.

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42

Hamlett, Neil A. "Comparison of multiresolution techniques for digital signal processing." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from the National Technical Information Service, 1993. http://edocs.nps.edu/npspubs/scholarly/theses/1993/Mar/93Mar_Hamlett.pdf.

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43

Scraggs, David Peter Thomas. "Digital signal processing techniques for semiconductor Compton cameras." Thesis, University of Liverpool, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491364.

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The work presented in this thesis has focused on the development of a low dose Compton camera for nuclear medicine. A Compton camera composed of two high-purity planar germanium orthogonal-strip detectors has been constructed. Fast digital data acquisition has been utilised for the application of pulse shape analysis techniques. A simple back projection imaging code has been developed and validated with a Geant4 radiation transport simulation of the Compton camera configuration. L A 137CS isotropic source and a 22Na anisotropic source have been experimentally reconstructed. Parametric pulse sh

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44

Hashimi, Seyed Bahauddin. "Coded modulation techniques for digital mobile communication systems." Thesis, Staffordshire University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321787.

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45

Ali, Mohammad Athar. "Digital rights management techniques for H.264 video." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/8890.

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This work aims to present a number of low-complexity digital rights management (DRM) methodologies for the H.264 standard. Initially, requirements to enforce DRM are analyzed and understood. Based on these requirements, a framework is constructed which puts forth different possibilities that can be explored to satisfy the objective. To implement computationally efficient DRM methods, watermarking and content based copy detection are then chosen as the preferred methodologies. The first approach is based on robust watermarking which modifies the DC residuals of 4×4 macroblocks within I-frames.

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46

Hobson, David Mark. "Characterisation of rice grains using digital imaging techniques." Thesis, University of Kent, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509657.

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47

Al-Mbaideen, Amneh Ahmed. "Digital signal processing techniques fpr NIR spectroscopy analysis." Thesis, University of Sheffield, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538095.

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48

Zenteno, Efrain. "Digital Compensation Techniques for Transmitters inWireless Communications Networks." Doctoral thesis, KTH, Signalbehandling, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-167971.

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Анотація:

Since they appeared, wireless technologies have deeply transformed our society. Today, wireless internet access and other wireless applications demandincreasingly more traffic. However, the continuous traffic increase can be unbearableand requires rethinking and redesigning the wireless technologies inmany different aspects. Aiming to respond to the increasing needs of wirelesstraffic, we are witnessing a rapidly evolving wireless technology scenario.This thesis addresses various aspects of the transmitters used in wireless communications.Transmitters present several hardware (HW) impairments

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49

Goldfarb, Gilad. "DIGITAL SIGNAL PROCESSING TECHNIQUES FOR COHERENT OPTICAL COMMUNICATION." Doctoral diss., University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2893.

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Coherent detection with subsequent digital signal processing (DSP) is developed, analyzed theoretically and numerically and experimentally demonstrated in various fiber‐optic transmission scenarios. The use of DSP in conjunction with coherent detection unleashes the benefits of coherent detection which rely on the preservation of full information of the incoming field. These benefits include high receiver sensitivity, the ability to achieve high spectral‐efficiency and the use of advanced modulation formats. With the immense advancements in DSP speeds, many of the problems hindering the use of

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50

Erk, Patrick P. (Patrick Peter). "Digital signal processing techniques for laser-doppler anemometry." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/43026.

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