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Dissertations / Theses on the topic 'Phase quantization'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Belchev, Borislav Stefanov, and University of Lethbridge Faculty of Arts and Science. "Deformation quantization for contact interactions and dissipation." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Physics and Astronomy, c2010, 2010. http://hdl.handle.net/10133/2490.

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This thesis studies deformation quantization and its application to contact interactions and systems with dissipation. We consider the subtleties related to quantization when contact interactions and boundaries are present. We exploit the idea that discontinuous potentials are idealizations that should be realized as limits of smooth potentials. The Wigner functions are found for the Morse potential and in the proper limit they reduce to the Wigner functions for the infinite wall, for the most general (Robin) boundary conditions. This is possible for a very limited subset of the values of the

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2

Shen, Jue. "Quantization Effects Analysis on Phase Noise and Implementation of ALL Digital Phase Locked-Loop." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-37212.

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With the advancement of CMOS process and fabrication, it has been a trend to maximize digital design while minimize analog correspondents in mixed-signal system designs. So is the case for PLL. PLL has always been a traditional mixed-signal system limited by analog part performance. Around 2000, there emerged ADPLL of which all the blocks besides oscillator are implemented in digital circuits. There have been successful examples in application of Bluetooth, and it is moving to improve results for application of WiMax and ad-hoc frequency hopping communication link. Based on the theoretic and m

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3

Okman, Osman Erman. "Quantization Index Modulation Based Watermarking Using Digital Holography." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607506/index.pdf.

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The multimedia watermarking techniques are evolved very quickly in the last years with the increase in the use of internet. The evolution of the internet makes the copyright issues very important and many different approaches are appeared to protect the digital content. On the other hand, holography is the method to store the 3-D information of an object but it is very applicable to use as a watermark because of the nature of the holographic data. The 3-D object can be reconstructed from the hologram even if the hologram is cropped or occluded. However, watermarking of an image with a hologram

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4

Schilling, Lars. "Direct dynamical tunneling in systems with a mixed phase space." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1184857765287-05752.

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Tunneling in 1D describes the effect that quantum particles can penetrate a classically insurmountable potential energy barrier. The extension to classically forbidden transitions in phase space generalizes the tunneling concept. A typical 1D Hamiltonian system has a mixed phase space. It contains regions of regular and chaotic dynamics, the so-called regular islands and the chaotic sea. These different phase space components are classically separated by dynamically generated barriers. Quantum mechanically they are, however, connected by dynamical tunneling. We perform a semiclassical quantiza

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Schilling, Lars. "Direct dynamical tunneling in systems with a mixed phase space." Doctoral thesis, Technische Universität Dresden, 2006. https://tud.qucosa.de/id/qucosa%3A23944.

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Tunneling in 1D describes the effect that quantum particles can penetrate a classically insurmountable potential energy barrier. The extension to classically forbidden transitions in phase space generalizes the tunneling concept. A typical 1D Hamiltonian system has a mixed phase space. It contains regions of regular and chaotic dynamics, the so-called regular islands and the chaotic sea. These different phase space components are classically separated by dynamically generated barriers. Quantum mechanically they are, however, connected by dynamical tunneling. We perform a semiclassical quantiza

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6

Fozooni, Milad. "Low-cost architectures for future MIMO systems." Thesis, Queen's University Belfast, 2017. https://pure.qub.ac.uk/portal/en/theses/lowcost-architectures-for-future-mimo-systems(ca73fe96-9ebb-4eb9-94cb-acbb11137bde).html.

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Massive multiple-input multiple-output is a promising technique for the next generation of wireless communication systems which addresses most of the critical challenges associated with concurrent relaying systems, such as digital signal processing complexity, long processing delay, and low latency wireless communications. However, the deployment of conventional fully digital beamforming methods, dedicates one radio frequency (RF) chain to each antenna, is not viable enough due to the high fabrication/implementation cost and power consumption. In this thesis, we envision to address this critic

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7

Ghaderi, Hazhar. "The Phase-Integral Method, The Bohr-Sommerfeld Condition and The Restricted Soap Bubble : with a proposition concerning the associated Legendre equation." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-169572.

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After giving a brief background on the subject we introduce in section two the Phase-Integral Method of Fröman & Fröman in terms of the platform function of Yngve and Thidé. In section three we derive a different form of the radial Bohr-Sommerfeld condition in terms of the apsidal angle of the corresponding classical motion. Using the derived expression, we then show how easily one can calculate the exact energy eigenvalues of the hydrogen atom and the isotropic three-dimensional harmonic oscillator, we also derive an expression for higher order quantization condition. In section four we d

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8

Bustamante, Danilo. "High-Precision, Mixed-Signal Mismatch Measurement of Metal-Oxide-Metal Capacitors and a 13-GHz 5-bit 360-Degree Phase Shifter." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/9240.

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A high-precision mixed-signal mismatch measurement technique for metal-oxide metal (MoM) capacitors as well as the design of a 13-GHz 5-bit 360-degree phase shifter are presented. This thesis presents a high-precision, mixed-signal mismatch measurement technique for metal-oxide–metal capacitors. The proposed technique incorporates a switched-capacitor op amp within the measurement circuit to significantly improve the measurement precision while relaxing the resolution requirement on the backend analog-to-digital converter (ADC). The proposed technique is also robust against multiple types of e

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9

Van, De Ven Christiaan Jozef Farielda. "Quantum Systems and their Classical Limit A C*- Algebraic Approach." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/324358.

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In this thesis we develop a mathematically rigorous framework of the so-called ''classical limit'' of quantum systems and their semi-classical properties. Our methods are based on the theory of strict, also called C*- algebraic deformation quantization. Since this C*-algebraic approach encapsulates both quantum as classical theory in one single framework, it provides, in particular, an excellent setting for studying natural emergent phenomena like spontaneous symmetry breaking (SSB) and phase transitions typically showing up in the classical limit of quantum theories. To this end, several tech

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10

Mazzoni, Michele. "A fibre bundle approach to U(1) symmetries in physics." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16776/.

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In questa tesi si utilizza il formalismo dei fibrati principali per descrivere le propriet`a topologiche globali di sistemi fisici classici e quantistici che presentano simmetrie legate all’azione del gruppo U(1). Nel primo capitolo `e contenuta una esposizione della teoria matematica dei fibrati, con un particolare riguardo ai fibrati principali ed alle strutture differenziali definibili su di essi (forme differenziali di connessione e curvatura). Nel secondo capitolo si impiega il formalismo precedentemente sviluppato per trattare le propriet`a del monopolo magnetico di Dirac e si otti

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11

Sauvaigo, Sylvie. "Formats de détection de produits d'amplification PCR : application à la mise en évidence du provirus VIH-1." Université Joseph Fourier (Grenoble ; 1971-2015), 1994. http://www.theses.fr/1994GRE10127.

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La reaction de polymerisation en chaine (polymerase chain reaction ou pcr) est devenue un outil indispensable dans les laboratoires de biologie moleculaire. Certaines applications notamment en diagnostic medical, exigent une specificite et une sensibilite maximale. Les formats employes doivent etre simples et compatibles avec une utilisation en routine de cette technique. Dans ce travail, nous presentons la mise au point d'un test diagnostic (amplicis ) base sur la pcr. Ce procede, qui permet une amelioration de la specificite et de la sensibilite du processus d'amplification, exploite les pos

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12

Vargas, Paredero David Eduardo. "Transmit and Receive Signal Processing for MIMO Terrestrial Broadcast Systems." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/66081.

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[EN] Multiple-Input Multiple-Output (MIMO) technology in Digital Terrestrial Television (DTT) networks has the potential to increase the spectral efficiency and improve network coverage to cope with the competition of limited spectrum use (e.g., assignment of digital dividend and spectrum demands of mobile broadband), the appearance of new high data rate services (e.g., ultra-high definition TV - UHDTV), and the ubiquity of the content (e.g., fixed, portable, and mobile). It is widely recognised that MIMO can provide multiple benefits such as additional receive power due to array gain, higher

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13

Passamani, Antonio. "Analysis and Design of a Transmitter for Wireless Communications in CMOS Technology." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3424386.

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The number of wireless devices has grown tremendously over the last decade. Great technology improvements and novel transceiver architectures and circuits have enabled an astonishingly expanding set of radio-frequency applications. CMOS technology played a key role in enabling a large-scale diffusion of wireless devices due to its unique advantages in cost and integration. Novel digital-intensive transceivers have taken full advantage of CMOS technology scaling predicted by Moore's law. Die-shrinking has enabled ubiquitous diffusion of low-cost, small form factor and low power wireless devi

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14

Bakke, Filho Knut. "Fases geométricas, quantização de Landau e computação quâantica holonômica para partículas neutras na presença de defeitos topológicos." Universidade Federal da Paraíba, 2009. http://tede.biblioteca.ufpb.br:8080/handle/tede/5724.

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Made available in DSpace on 2015-05-14T12:14:06Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 1577961 bytes, checksum: c71d976d783495df566e0fa6baadf8ca (MD5) Previous issue date: 2009-08-06<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>We start this work studying the appearance of geometric quantum phases as in the relativistic as in the non-relativistic quantum dynamics of a neutral particle with permanent magnetic and electric dipole moment which interacts with external electric and magnetic fields in the presence of linear topological defects. We describe

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15

Liao, Wei-Chun, and 廖緯竣. "Research and Performance Analysis of Phase Quantization Encode Technique." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/05586940715063735607.

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碩士<br>銘傳大學<br>電腦與通訊工程學系碩士班<br>104<br>Phase quantization technique of analog-to-digital conversion is discussed in this thesis to show root mean square error between decoded phase quantization waveform and original received waveform. In this work, the recovering algo-rithm is proposed from noise affected signal and the improved digital to analog conversion calculations are also introduced. In simulation results, the perfor-mance of bit error rate and root mean square error values of phase quantization is illustrated and also is compared with traditional amplitude quantization tech-nique to show

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Liao, Wei-Chun, and 廖緯竣. "Research and Performance Analysis of Phase Quantization Encode Technique." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/63655005275199458462.

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碩士<br>銘傳大學<br>電腦與通訊工程學系碩士班<br>104<br>Phase quantization technique of analog-to-digital conversion is discussed in this thesis to show root mean square error between decoded phase quantization waveform and original received waveform. In this work, the recovering algo-rithm is proposed from noise affected signal and the improved digital to analog conversion calculations are also introduced. In simulation results, the perfor-mance of bit error rate and root mean square error values of phase quantization is illustrated and also is compared with traditional amplitude quantization tech-nique to show

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17

Liu, Hsi-En, and 劉熙恩. "Quantization Noise Suppression Techniques in Delta-Sigma Phase-Locked Loops." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/83263979012984456295.

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碩士<br>國立清華大學<br>電機工程學系<br>102<br>In modern wireless communication systems, frequency synthesizers with high frequency resolution are used to up/downconvert signals to desired bands precisely. Phase-locked loops (PLLs) with the delta-sigma technique are a common way to achieve high frequency resolution. However, quantization noise is inevitable introduced during division ratio dithering, it greatly degrades the out-band noise performance especially in a high-bandwidth phase-locked loop. We focus on the study of quantization noise suppression. Analysis of quantization noise from delta-sigma mo

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18

Morton, Stuart M. "EARLY DETECTION OF OVARIAN CANCER USING GABOR WAVELET PHASE QUANTIZATION AND BINARY CODING." Thesis, 2009. http://hdl.handle.net/1805/1972.

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ix ABSTRACT Stuart Morton EARLY DETECTION OF OVARIAN CANCER USING GABOR WAVELET PHASE QUANTIZATION AND BINARY CODING Ovarian cancer is the 5th most common cancer in women, but it is the most difficult to detect in its early stages. Early detection and treatment of ovarian cancer has been shown to increase the five year survival rate of a woman from 12% if caught in stage four of the disease up to 92% if caught in stage one of the disease. Using signal processing, pattern classification and a learning algorithm, it is possible to identify patterns in high dimensionality mass spectrometry da

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19

Uttarwar, Tushar. "A digital multiplying delay locked loop for high frequency clock generation." Thesis, 2011. http://hdl.handle.net/1957/25739.

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As Moore��s Law continues to give rise to ever shrinking channel lengths, circuits are becoming more digital and ever increasingly faster. Generating high frequency clocks in such scaled processes is becoming a tough challenge. Digital phase locked loops (DPLLs) are being explored as an alternative to conventional analog PLLs but suffer from issues such as low bandwidth and higher quantization noise. A digital multiplying delay locked loop (DMDLL) is proposed which aims at leveraging the benefit of high bandwidth of DLL while at the same time achieving the frequency multiplication property of

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20

Li, Shiang-wei, and 李祥瑋. "Quantization-Noise Cancellation Technique and Phase-Locked Loop IC Design in a Fractional–N Frequency Synthesizer." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/z6f55y.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>95<br>For the fractional-N frequency synthesizers using delta-sigma modulation (DSM) techniques, higher PLL bandwidth is highly desirable in order to achieve faster settling time. As the PLL bandwidth is increased, more quantization noises pass through the PLL so that the output phase noise performance is degraded. There is a tradeoff between phase-noise performance and PLL bandwidth. To improve the problem, the thesis studies the quantization noise cancellation technique. With this technique, the PLL bandwidth can be increased without the cost of degrading phase-n

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21

Кобяков, А. В., та A. V. Kobyakov. "Разработка схем управления зеркальными антеннами 600 метрового радиотелескопа на основе цифровой обработки сигналов : магистерская диссертация". Master's thesis, 2017. http://hdl.handle.net/10995/54217.

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В данной работе представлена разработка схемы управления зеркальными антеннами 600 метрового радиотелескопа на основе цифровой обработки сигналов. Был произведен анализ диаграммы направленности радиотелескопа при цифровом методе формирования, а также оценено влияние фазовых ошибок на диаграмму направленности радиотелескопа, возникающих в процессе оцифровке аналогового сигнала на несущей частоте. Было произведено математическое моделирование и оценка влияния параметров цифровой элементной базы на характеристики диаграммы направленности радиотелескопа, предложено оборудование для построения ди

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22

Gómez, Ignacio. "Cálculo de resonancias en sistemas cuánticos a partir de formas normales." Bachelor's thesis, 2021. http://hdl.handle.net/11086/23492.

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Tesis (Lic. en Física)--Universidad Nacional de Córdoba, Facultad de Matemática, Astronomía, Física y Computación, 2021.<br>En este trabajo se estudia un método computacional para el cálculo de resonancias en sistemas cuánticos propuesto en el año 2007 por los autores Waalkens, Schubert & Wiggins y que puede emplearse en sistemas cuya función Hamiltoniana clásica (o símbolo principal, en términos de la cuantización de Weyl) presenta un punto de ensilladura con algunas propiedades adicionales. Bajo las hipótesis adecuadas, es posible obtener una aproximación de orden arbitrario para la denomina

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