Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"AM-FM"”.
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Digitální AM/FM vysílač
Táto diplomová práca je zameraná na teoretický popis aj praktickú realizáciu softwarovo definovaného vysielača. Hlavným zámerom práce bolo skonštruovať funkčný prototyp softwarovo definovaného vysielača v pásme FM. Teoretická časť je určená na popísanie základných častí zariadenia a princípov …
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AM-FM methods for image and video processing
… on the development of robust and efficient Amplitude-Modulation Frequency-Modulation (AM-FM) demodulation methods for image and video processing (there is currently a patent pending that covers the AM-FM methods and applications described in this dissertation). The motivation for this …
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AM-FM Analysis of Structural and Functional Magnetic Resonance Images
… proposes the application of multi-dimensional Amplitude-Modulation Frequency-Modulation (AM-FM) methods to magnetic resonance images (MRI). The basic goal is to provide a framework for exploring non-stationary characteristics of structural and functional MRI (sMRI and fMRI). First, we provide a …
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Analysis and restoration of a 1960s ear vacuum tube AM-FM reflex receiver
… and evaluation of a 1960s era vacuum tube AM-FM reflex receiver. External influences such as tax laws necessitated clever designs to minimize the use of expensive vacuum tubes in radios. The thesis work yielded a thorough description of the circuits, the successful restoration of the radio …
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Probabilistic generative modeling of speech
… algorithms model a subset of speech parameters of interest and blur the rest using signal processing techniques and feature extraction. However, evidence shows that many speech parameters can be more accurately estimated if they are modeled jointly; speech synthesis also benefits from …
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An interpretative phenomenological analysis of the experience of forced marriage for diasporic south Asian women who have left
Forced marriage (FM) was criminalised in the UK in 2014 as it was described as little more than slavery by the Prime Minister. The consequences of FM can include physical, emotional, and financial abuse, disruption to education, damage to career opportunities, enforced pregnancy, rape, abortion, …
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A Spatial Decision Support System for Planning Broadband, Fixed Wireless Telecommunication Networks
… developed countries. Consumer devices such as AM/FM radios, cordless and cellular telephones, pagers, satellite televisions, garage door openers, and television channel changers are just some of the applications of wireless technology. More recently, wireless computer networking has seen …
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Symbol Timing and Coarse Classification of Phase Modulated Signals on a Standalone SDR Platform
… detect, classify, and extract the relevant parameters from a received signal to establish physical layer communications using the received signal's profile. The current implementation is able to identify signals including AM, FM, MPSK, QAM, MFSK, and OFDM. The system is constructed to run on a …
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Application of generative models in speech processing tasks
… of the model are threefold. First, it is among the very first works to build a complete probabilistic model for speech. Second, it has a well-designed model for the phase spectrum of speech, which has been hard to model and often neglected. Third, it models the AM-FM effects in speech, …
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Detection and Classification of Diabetic Retinopathy Pathologies in Fundus Images
… differences in fundus imaging devices, such as camera resolution. These methodologies primarily employ bottom-up approaches, in which the accurate segmentation of all the lesions in the retina is the basis for correct determination. A disadvantage of bottom-up approaches is that they rely on the …
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DOCSIS 3.1 cable modem and upstream channel simulation in MATLAB
… only signal processing done was by an analogue amplifier, and transmission only occurred in one direction (i.e. from the antennae/head-end to the subscribers). However, as CATV grew in popularity, demand for services such as pay-per-view television increased, which lead to supporting …
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Investigation and development of a novel metrology standard for the measurement of relative intensity noise and frequency chirp of DFB lasers in optical networks
… accuracy than existing methods. This is a key parameter for laser components used in telecommunication systems due to the drive to reduce inherent noise, improve overall signal-to-noise ratio and thus increasing achievable communication link length and reduce required component specification. The …
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Cognitive Gateway to Promote Interoperability, Coverage and Throughput in Heterogeneous Communication Systems
… coexist, accompanied by the trend that dynamic spectrum access (DSA) is allowed and will be gradually employed, cognition and cooperation form a promising framework to achieve the ideality of seamless ubiquitous connectivity in future communication networks. In this dissertation, the …
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Nanomechanical viscoelastic characterization of rubber with atomic force microscopy (AFM)
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-14 without embargo terms
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Interface circuits for readout and control of a micro-hemispherical resonating gyroscope
… back-end, along with a custom on-board vacuum chamber and chassis to house the μHSR and interface electronics. Finally the performance of the rate mode gyroscope interface was characterized, showing a linear scale factor of 8.57 mv/deg/s, an angle random walk (ARW) of 34 deg/sqrt(hr) and a bias …