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Teses / dissertações sobre o tema "Signal stations"

Autor: Grafiati

Publicado: 29 de julho de 2024

Última modificação: 31 de julho de 2025

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1

Qasim, Muhammad, and Ali Chaudhry Majid. "Signal Processing on Ambric Processor Array : Baseband processing in radio base stations." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-1660.

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<p>The advanced signal processing systems of today require extreme data throughput and low power consumption. The only way to accomplish this is to use parallel processor architecture.</p><p>The aim of this thesis was to evaluate the use of parallel processor architecture in baseband signal processing. This has been done by implementing three demanding algorithms in LTE on Ambric Am2000 family Massively Parallel Processor Array (MPPA). The Ambric chip is evaluated in terms of computational performance, efficiency of the development tools, algorithm and I/O mapping.</p><p>Implementations of Ma

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2

Chaufray, Jean-Marie. "Détection et démodulation de stations de base dans le réseau UMTS." Marne-la-Vallée, 2003. http://www.theses.fr/2003MARN0161.

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Cette thèse qui s’est déroulée dans le cadre d’un contrat CIFRE entre Thales Communications et l’Université de Marne-la-Vallée s’inscrit dans le contexte d’un projet européen. Les travaux effectués concernent la détection et la démodulation de stations de base d’un réseau UMTS-FDD, à l’aide d’une antenne munie de plusieurs capteurs. Dans une première partie, nous avons développé et testé une procédure pour la détection et la synchronisation des stations de base basée sur des algorithmes exploitant les dimensions spatiale et temporelle des signaux reçus. La deuxième partie est consacrée à l’est

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3

Gollbo, Simon, and Adam Sköld. "Base stations for communication in obstructed environments." Thesis, Uppsala universitet, Signaler och System, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-255243.

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The purpose of this project was to produce signal relay stations that could receive information via 2.4 GHz radio and relay the information to a designated target station. If a relay station was located outside of signal range for the target station it was supposed to utilize other relay stations to transfer the information to the target station, so called multi-hop. The would-be application of the relay stations was orienteering. When an orienteer punches a checkpoint the signal stations would relay information of who punched the control, when it was punched and the checkpoint that was punche

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4

Law, Eugene. "TECHNIQUE FOR DETERMINING THE POWER FLUX DENSITY OF INTERFERING SIGNALS AT TELEMETRY RECEIVING STATIONS." International Foundation for Telemetering, 2005. http://hdl.handle.net/10150/604814.

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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>This paper will present techniques for accurately measuring the power flux density (PFD) of interfering signals at telemetry receiving stations. The solar power flux density is measured daily by radio astronomers and will be used as a calibration signal. The electromagnetic spectrum is being used more intensely as time marches on so being familiar with interference measurement techniques i

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5

ERTUNCAY, DENIZ. "Temporal and spatial analysis of near fault stations in terms of impulsive behavior." Doctoral thesis, Università degli Studi di Trieste, 2020. http://hdl.handle.net/11368/2961198.

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Increasing number of seismic stations located in close proximity to active faults allows analysis of seismic signals that are recorded in near fault regions. Unique seismic signals, called “impulsive” or “pulse shaped” signals, are captured in velocity waveforms in numerous large magnitude earthquakes. In such waveforms, the earthquake is recorded as a one or several long period high amplitude signals. Long period signals are important in engineering seismology due to their large loads on structures. Ground motion prediction equations and design codes fail to capture the amplitudes in long per

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6

Ghorabi, Moncef. "Vitesses de groupe mesurée en deux stations du réseau GEOSCOPE et régionalisation de la structure globale du manteau supérieur." Paris 7, 1985. http://www.theses.fr/1985PA07F056.

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Analyse des données du mode fondamental des ondes de Love et de Rayleigh, obtenues aux deux premières stations du réseau, SSB et PCR, pendant les années 1982 à 1984. Calcul des courbes de dispersion en vitesse de groupe sur les trajets directs et inverses et quelques trains d'ordre supérieur, pour les séismes suffisammant forts enregistrés dans ces stations durant cette période. Discussion qualitative des courbes obtenues regroupées par azimuts et distances épicentrales proches par rapport à chacune des stations; influence des structures tectoniques traversées

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7

Wagner, Dörte [Verfasser], and Hans Von [Akademischer Betreuer] Storch. "Evaluation of Storminess by Early 20th Century Atmospheric Data from Signal Stations along the German Coastline / Dörte Wagner ; Betreuer: Hans von Storch." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2017. http://d-nb.info/1147968993/34.

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8

Sundberg, Simon. "Localization of eNodeBs with a Large Set of Measurements from Train Routers." Thesis, Karlstads universitet, Institutionen för matematik och datavetenskap (from 2013), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-75456.

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This master thesis investigates the possibility of locating LTE base stations, known as eNodeBs, using signal measurements collected by routers on trains. Four existing algorithms for transmitter localization are adopted: the centroid, strongest signal, Monte Carlo path loss simulation and power difference of arrival (PDoA) methods. An improved version of Monte Carlo path loss simulation called logloss fitting is proposed. Furthermore, a novel localization method called sector fitting is presented, which operates solely on the cell identity and geographical distribution of the measurements. Th

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9

Pelcat, Maxime. "Prototypage Rapide et Génération de Code pour DSP Multi-Coeurs Appliqués à la Couche Physique des Stations de Base 3GPP LTE." Phd thesis, INSA de Rennes, 2010. http://tel.archives-ouvertes.fr/tel-00578043.

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Le standard 3GPP LTE (Long Term Evolution) est un nouveau standard de télécommunication terrestre dont la couche physique des stations de base, appelées eNodeB, est particulièrement coûteuse. Les processeurs de traitement du signal (DSP) sont largement employés dans les stations de base pour calculer les algorithmes de la couche physique. Les DSPs de dernière génération sont des systèmes complexes et hétérogènes. Il n'existe pas actuellement de solution idéale pour distribuer les parties d'une application comme le LTE sur les différents cœurs contenus dans un eNodeB. Dans cette thèse, nous pré

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10

Sun, Zhibin. "Application of artificial neural networks in early detection of Mastitis from improved data collected on-line by robotic milking stations." Lincoln University, 2008. http://hdl.handle.net/10182/665.

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Two types of artificial neural networks, Multilayer Perceptron (MLP) and Self-organizing Feature Map (SOM), were employed to detect mastitis for robotic milking stations using the preprocessed data relating to the electrical conductivity and milk yield. The SOM was developed to classify the health status into three categories: healthy, moderately ill and severely ill. The clustering results were successfully evaluated and validated by using statistical techniques such as K-means clustering, ANOVA and Least Significant Difference. The result shows that the SOM could be used in the robotic milki

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11

Runyon, Ginger R. "Parallel processor architecture for a digital beacon receiver." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/41422.

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12

Paillier, Laurie. "Architecture de récepteur cohérent pour les liens optiques satellite-sol avec optique adaptative." Electronic Thesis or Diss., Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAT026.

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L’émergence et la multiplication de moyens d’observation du sol de résolution croissante et de réseaux de télécommunication spatiaux à très haut débit pour l’internet globalisé rendent nécessaire d’accroître la capacité de transmission de données entre l’espace et le sol de plusieurs ordres de grandeur. Les liens optiques, avec des débits de plusieurs dizaines de Gbps par canal, constituent une solution à très fort potentiel si les techniques de modulation de phase exploitées dans les réseaux fibrés peuvent y être appliquées. L’enjeu de cette thèse est d’investiguer le recours à des méthodes d

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13

Bosse, Jonathan. "Géolocalisation de sources radio-électriques : stratégies, algorithmes et performances." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2012. http://tel.archives-ouvertes.fr/tel-00700670.

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Cette thèse porte sur la géolocalisation de sources radio-électriques dans le cadre du traitement d'antenne, c'est-à-dire l'estimation de la position, dans le plan ou l'espace, de sources incidentes à divers réseaux multicapteurs (stations de base). Il s'agit de concevoir des algorithmes estimant au mieux la position d'un ensemble de sources et de caractériser les limites théoriques, en termes d'erreur quadratique moyenne, des approches envisagées pour résoudre le problème de géolocalisation. Nous nous plaçons dans un contexte passif, sans a priori sur les signaux émis. De manière classique, l

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14

Kaiser, Julius A., and Fredrick W. Herold. "AUTONOMOUS GROUND STATION FOR SATELLITE COMMUNICATIONS." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/607306.

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International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>Employment of the retro-directive technique described in Reference 1 describes a totally Autonomous Ground Station providing hemispheric coverage and continuous tracking. This System establishes communications between the satellite and ground station without human intervention or moving parts. When a satellite is in view, the ground station beacon antenna, using CDMA, enables the desired satellite transmitter and directs its beam to the ground station. The gr

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15

Crook, Alex, and Gregory Kissinger. "Using COTS Graphics Processing Units in Signal Analysis Workstations." International Foundation for Telemetering, 2011. http://hdl.handle.net/10150/595798.

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ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada<br>Commercial off-the-shelf (COTS) graphics processing units (GPU) perform the signal processing operations needed for video games and similar consumer applications. The high volume and competitive nature of that industry have produced inexpensive GPUs with impressive amounts of signal processing power. These devices use parallel processing architectures to execute DSP algorithms far faster than single, or eve

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16

DECHELLE, FRANCOIS. "Definition d'une station de developpement pour des applications de traitement du signal sur multi-processeurs." Paris 6, 1989. http://www.theses.fr/1989PA066585.

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Les methodes actuelles de programmation dans le domaine des systemes temps reel de traitement du signal conduisent a des temps de developpement tres longs et a des couts penalisants dans un contexte industriel. Une methode de programmation est proposee, visant a accelerer le passage de la specification de l'application a son execution temps reel sur un reseau de processeurs de traitement du signal. Elle repose sur l'utilisation d'un langage flots de donnees et temps reel synchrone, signal. Les differentes etapes de cette methode sont detaillees: specification de l'application et simulation fon

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17

Hargis, Brent H. "Analysis of Long-Term Utah Temperature Trends Using Hilbert-Haung Transforms." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5490.

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We analyzed long-term temperature trends in Utah using a relatively new signal processing method called Empirical Mode Decomposition (EMD). We evaluated the available weather records in Utah and selected 52 stations, which had records longer than 60 years, for analysis. We analyzed daily temperature data, both minimum and maximums, using the EMD method that decomposes non-stationary data (data with a trend) into periodic components and the underlying trend. Most decomposition algorithms require stationary data (no trend) with constant periods and temperature data do not meet these constraints.

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18

Al, Hasan Mohammad Sami. "Role of non-signage elements in the image of underground stations a study of Hong Kong MTR users' cognitive image /." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42931514.

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19

Mohammed, Taqhiuddin. "Designing an Emergency Traffic Signal System (ETSS): A Case Study of an Intersection Along U.S.1, Fairfax County, Virginia." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/33411.

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Access to highways from a local firehouse is a major problem for emergency services. Motorists often do not see flashing lights or hear sirens from the approaching emergency vehicles (EV) until emergency vehicles reach the highway entrance, often too late to take appropriate action. Many locations have installed special signals called emergency traffic signal systems (ETSS) or used signal preemption to notify motorists and to stop traffic to allow the emergency vehicle to enter the highway safely. This thesis will examine the effectiveness of one such installation at the intersection along U.

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20

Koksal, Murat Miran. "Positioning Based On Tracking Of Signal Parameters In A Single Base Station Wimax Network Using Fingerprinting." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612248/index.pdf.

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IEEE 802.16 is a point to multipoint broadband wireless access standard, designed from ground up for fast and reliable mobile networking. Several location-related MAC layer fields specified in the standard indicate that WiMAX networks can be convenient backbones for future positioning systems. Information encapsulated in MAC headers is especially important for single base station positioning systems which require fewer network resources than multiple reference station location systems, but need more location-related input data. In this thesis, an algorithm for positioning mobile stations in a

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21

Pasinetti, Nadia. "Wound healing signals mediated by Rho/ROCK activation in response to radiotherapy and consequences fot treatmeny of late damage within normal tissues." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00714360.

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Radiotherapy is the second most important treatment modality after surgery in the treatment of cancer. Recent technical advancements, such as intensity-modulated radiation therapy (IMRT) or image-guided radiation therapy (IGRT), combined with new targeted drugs have significant promise for therapeutic outcome. However radiation treatment could result in disabling normal tissue injury and in the development of progressive fibrosis in a subset of sensitive patients and in long-term cancer survivors. The main feature of tissue fibrosis is excessive accumulation of abnormal and cross-linked collag

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22

Xiao, Mingxiang, and 肖明祥. "Quadrature predistortion using difference-frequency technique forbase-station high-power amplifiers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43223953.

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Xiao, Mingxiang. "Quadrature predistortion using difference-frequency technique for base-station high-power amplifiers." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43223953.

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24

RICHARD, JOEL. "Application de methodes de traitements numeriques de signaux a la detection, compression et reconnaissance d'evenements d'origines sismiques dans une station autonome de type sismographe fond de mer." Rennes 1, 1988. http://www.theses.fr/1988REN10121.

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Les conditions de fonctionnement des sismographes fond de mer imposent le conditionnement des signaux pour limiter les debits d'information lors de l'enregistrement ou de la transmission. Trois methodes deduites de la transformation de fourier, de la transformation de walsh et de la modelisation autoregression sont examines et testes

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25

Chalermwisutkul, Suramate. "Large signal modeling of GaN HEMTs for UMTS base station power amplifier design taking into account memory effects." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=984082980.

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Al, Hasan Mohammad Sami. "Role of non-signage elements in the image of underground stations: a study of Hong Kong MTR users' cognitiveimage." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B42931514.

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27

Poussielgue, Nicolas. "Signal acoustique et activité thermique dans les lacs de cratère de volcans actifs. Réalisation d'une station de mesure hydroacoustique au Taal (Philippines)." Phd thesis, Chambéry, 1998. http://tel.archives-ouvertes.fr/tel-00811782.

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Afin d'étudier les variations temporelles du signal acoustique dans un lac de cratère nous avons réalisé une station de mesure permanente et l'avons installée en novembre 1994 dans le lac de cratère du volcan Taal (philippines). Cette station acquiert tous les quarts d'heure des échantillons temporels du signal acoustique (à 40 mètres de profondeur) dans trois bandes de fréquences différentes: BF(<500hz), MF (<12,5 kHz) et HF(<500kHz). Le traitement des données permet la représentation d'un sonogramme. Une variation importante du signal acoustique a été induite par le séisme de Mindoro (magnit

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28

Толбатов, Володимир Аронович, Владимир Аронович Толбатов, Volodymyr Aronovych Tolbatov та ін. "Забезпечення захисту сигналу FM радіостанції зі стерео кодуванням у режимі pilot-tone". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/65165.

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29

Wang, Willy. "Evaluating the use of PXI modules in tests of a radio base station." Thesis, KTH, Radio Systems Laboratory (RS Lab), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-143810.

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This thesis project was carried out at the electromagnetic compatibility (EMC) department at Ericsson AB. One of the department’s goals is to seek a possible replacement to the box test instruments by utilizing PCI extension for instrumentation (PXI) modules. The main objective of this project is to evaluate how different PXI modules work during testing of a radio base station (RBS), in terms of performance, test time, and cost. A downlink decoder was implemented in LabVIEW with an extension called MathScript and several software test solutions were examined to measure error vector magnitude (

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30

Mollén, Christopher. "High-End Performance with Low-End Hardware : Analysis of Massive MIMO Base Station Transceivers." Doctoral thesis, Linköpings universitet, Kommunikationssystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-143455.

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Massive MIMO (multiple-input–multiple-output) is a multi-antenna technology for cellular wireless communication, where the base station uses a large number of individually controllable antennas to multiplex users spatially. This technology can provide a high spectral efficiency. One of its main challenges is the immense hardware complexity and cost of all the radio chains in the base station. To make massive MIMO commercially viable, inexpensive, low-complexity hardware with low linearity has to be used, which inherently leads to more signal distortion. This thesis investigates how the deg

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Kamanzi, Janvier. "Development of a low energy cooling technology for a mobile satellite ground station." Thesis, Cape Peninsula University of Technology, 2013. http://hdl.handle.net/20.500.11838/1072.

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Thesis submitted in fulfillment of the requirements for the degree Master of Technology:Electrical Engineering in the Faculty ofEngineering at the Cape Peninsula University of Technology Supervisor:Prof MTE KAHN Bellville December 2013<br>The work presented in this thesis consists of the simulation of a cooling plant for a future mobile satellite ground station in order to minimize the effects of the thermal noise and to maintain comfort temperatures onboard the same station. Thermal problems encountered in mobile satellite ground stations are a source of poor quality signals and also of the p

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32

Nwup, Emineimo Kennedy, and Adesola Idris Akande. "Evaluation of the pre IEEE 802.11s RFC : Aspects of the Design and Implementation of the Mesh Station with RA-OLSR in the C-Core." Thesis, Blekinge Tekniska Högskola, Avdelningen för telekommunikationssystem, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3883.

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The demand for ubiquitous networks has pushed the designs of networks all the way. The requirement for access point to be integrated into IEEE 802.3 standard and other networks has always been a sore point in the limitation of wireless coverage of IEEE 802.11 standard networks. Wireless Mesh Network (WMN) is expected to be the future of the next generation wireless network. It is experiencing a fast growing development due to its attractive features which includes high reliable connectivity, easy deployment, self healing, self configuring, flexible network expansion etc. Hence the mobility of

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Ali, Arslan [Verfasser], Georg [Akademischer Betreuer] Fischer, Georg [Gutachter] Fischer, and Brink Stephan [Gutachter] ten. "Signal Integrity Analysis based on Higher Order Statistics for Inspection of Base Station and MIMO Array Imperfections and Compromitation / Arslan Ali ; Gutachter: Georg Fischer, Stephan ten Brink ; Betreuer: Georg Fischer." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2021. http://d-nb.info/1238899013/34.

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Muñoz, Limay Katherine, and Rentería David Alonso Barrios. "Mejoramiento de calidad de servicio de señal abierta en una empresa televisiva de la Región de Ica." Bachelor's thesis, Universidad Ricardo Palma, 2015. http://cybertesis.urp.edu.pe/handle/urp/1289.

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La calidad de servicio de televisión de señal abierta en el Perú ha sido un inconveniente en las últimas décadas debido a la mala calidad que se brinda a los usuarios, la llegada de las implementaciones de estaciones terrestres digitales de la Televisión Digital Terrestre (TDT) podrá brindar a los ciudadanos de provincias y lugares lejanos una mejor calidad de imagen en sus televisores, en el cual están involucradas las emisoras televisivas. Una de las características de la señal de la televisión digital es la forma eficiente que tiene para transmitir en cualquier lugar, con alta calidad tant

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Ullrich, Robin. "Verfahren zur Punktidentifizierung bei der Qualitätskontrolle im Maschinenbau unter Verwendung von Polarmesssystemen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-229911.

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In der heutigen Zeit wird die Qualitätssicherung von großen Produktionsgütern des Maschinen und Anlagenbaus vornehmlich durch flexibel einsetzbare Industrietachymeter oder Lasertracker vollzogen. Die vermessungstechnische Erfassung der qualitätsrelevanten Daten ist dabei in enge Prozessketten der Produktion eingebettet. Aufgrund dessen sind die Messabläufe meist softwareseitig gesteuert und gewährleisten eine vollständige und zeiteffiziente Erfassung aller Messpunkte. Damit die korrekte Überführung der Instrumentendaten in das Bezugssystem des Produkts sichergestellt werden kann, muss bei den

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Nasri, Amin. "On the Dynamics and Statics of Power System Operation : Optimal Utilization of FACTS Devicesand Management of Wind Power Uncertainty." Doctoral thesis, KTH, Elektriska energisystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-154576.

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Nowadays, power systems are dealing with some new challenges raisedby the major changes that have been taken place since 80’s, e.g., deregu-lation in electricity markets, significant increase of electricity demands andmore recently large-scale integration of renewable energy resources such aswind power. Therefore, system operators must make some adjustments toaccommodate these changes into the future of power systems.One of the main challenges is maintaining the system stability since theextra stress caused by the above changes reduces the stability margin, andmay lead to rise of many undesira

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Vieira, Pedro Rates. "Efeitos funcionais e filogenéticos nas relações entre forófitos e epífetos vasculares." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/144069.

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Os padrões de associação entre epífitos e forófitos não podem ser considerados espécie-específicos, mas as árvores que os epífitos colonizam também não são um conjunto aleatório das espécies forofíticas de um determinado local. Ao invés disso, parece haver uma preferência de certos epífitos por diferentes forófitos. No entanto, se conhece pouco sobre os fatores que determinam essa preferência. Nosso objetivo nesse trabalho é avaliar como os atributos funcionais e a filogenia dos epífitos vasculares influenciam na associação dos epífitos com os forófitos em uma Floresta Ombrófila Mista no sul d

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Hao, Yonggang. "Communications and radar signal processing for multiple base stations." 2007. https://scholarworks.umass.edu/dissertations/AAI3289260.

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This dissertation primarily focuses on design techniques for systems where multiple towers cover a given geographical area. In the first portion of this dissertation, these are communication towers and the goal is the reliable broadcast of information from these towers to mobile users. In the second portion of this dissertation, these towers are radars, and the goal is to recover the refractivity of the intervening atmosphere using phase measurements of the returned signal from various ground targets. Finally, in the third section, we depart from this general scenario and study transmission sc

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Leyonhjelm, Scott. "A digital signal processing solution for multichannel base stations." Thesis, 1995. https://vuir.vu.edu.au/15386/.

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Radio communication systems of the future will require a large increase in user capacity. To achieve this, cell sizes will reduce and the number of base stations will increase. Current base station architectures use analogue combining techniques which are expensive, voluminous and inflexible. This thesis investigates a Digital Signal Processing (DSP) solution which produces a cheaper, smaller and more flexible multichannel base station transmitter design. The main design challenges of the new DSP low power combining architecture are the multichannel combining algorithm, the frequency transla

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Shen, Sung-Chieh, and 沈嵩傑. "Analysis of Signal Quality and System Performance with Dynamic Traffic Load at Next Generation Femtocell Base Stations." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/57679647548538126349.

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碩士<br>國立中正大學<br>通訊工程研究所<br>99<br>International Mobile Telecommunication Advanced (IMT-Advanced) cellular system is defined by International Telecommunication Union (ITU). According to the ITU requirements, an IMT-Advanced cellular system must have target peak data rates up to 100 Mbit/s for high mobility such as mobile access and up to 1 Gbit/s for low mobility such as nomadic/local wireless access. IEEE 802.16m and 3GPP LTE-Advanced are two candidates of IMT-Advanced technology and both of them incorporate Femtocell Base Station into their next generation mobile network standards. Femtocell B

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Bassoo, Vandana. "A digital up-conversion architecture for future high efficiency wireless base stations." Thesis, 2010. https://vuir.vu.edu.au/16051/.

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Over the past few years, there has been a growing need for wireless communications with higher data rates and ubiquitous coverage, and these must be achieved at reduced cost and with a lower carbon footprint. This evolution in wireless demand places a big burden on transmitter architectures. The need for higher efficiency has stimulated research into the potential replacement of current linear power amplifiers (PAs) by switch mode power amplifiers (SMPAs) at cellular frequencies. The radio frequency (RF) PA currently accounts for a significant part of the cost, and most of the power requirem

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Tsao, Kang-Ju, and 曹侃如. "Analysis of Signal Quality and System Performance with Different Power Setting Strategies at Next Generation Femtocell Base Stations." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/42274837424899641532.

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碩士<br>國立中正大學<br>通訊工程學系<br>98<br>International Mobile Telecommunication Advanced (IMT-Advanced) cellular system is defined by International Telecommunication Union (ITU). According to the ITU requirements, an IMT-Advanced cellular system must have target peak data rates up to 100 Mbit/s for high mobility such as mobile access and up to 1 Gbit/s for low mobility such as nomadic/local wireless access. IEEE 802.16m and 3GPP LTE-Advanced are two candidates of IMT-Advanced technology and both of them incorporate Femtocell Base Station into their next generation mobile network standards. Femtocell Ba

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Bridges, Paul A. "Digital demodulation techniques for radio channels." Thesis, 1993. https://vuir.vu.edu.au/15572/.

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The basis of this research is directed towards the Private Mobile Radio (PMR) networks, which play significant roles in taxi, police, ambulance and other such services. With an ever increasing need for data transmission, the current PMR systems which were designed for voice are not adequate. This research will examine a digital modulation scheme which can co-exist with an analog system. The generation of the digital modulation will be examined in terms of Adjacent Channel Interference (ACI) requirements. Simulation techniques for the mobile radio channel are discussed, for evaluation of demod

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Pazahr, Shila. "Einfluss von Pravastatin auf die Kontraktion und auf die PI3K-Akt-Signal-Kaskade in isoliertem Kaninchen- und isoliertem insuffizienten Humanmyokard." Doctoral thesis, 2012. http://hdl.handle.net/11858/00-1735-0000-000D-F032-A.

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Zeng, Qingjie. "Performance Evaluation of Signage System in Subway Stations." Thesis, 2011. http://spectrum.library.concordia.ca/7259/1/Zeng_MASc_S2011.pdf.

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An information integrated, recognition accessible and format standardized signage system is not only a basic feature of a subway station, but also a factor that contributes to the smooth and well-organized operation of the subway service. To figure out the deficiency and limitation of existing signs in one subway station, and to further recover and improve the signage function, a comprehensive performance assessment of the signage system is necessary and compulsory, if not periodically, as least when major system modifications/enhancements are executed. In this study, a methodology is propos

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WENG, CHI-CHENG, and 翁啟誠. "Research on FDD-LTE 2600MHz Wireless Base Station Signal Optimization Technology." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/8kbz85.

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碩士<br>國立勤益科技大學<br>電子工程系<br>107<br>With the fast development of electronic technology and the rapid development of wireless network technology, mobile Internet has become a necessity for many people, and users demand for high speed mobile network is increasing. Therefore, it is a very important issue to optimize the network coverage and the quality of mobile communication. The radiated RF signal will be limited by terrain, building, distance, frequency, platform height, antenna angle, transmit power, user device performance and other factors, furthermore will affect the actual transmission data

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Li, Chunsheng. "MyD88, central relay station of interleukin 1 signaling pathway." Diss., 2005. http://etd.library.vanderbilt.edu/ETD-db/available/etd-12132005-122759/.

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Ming-JengHsu and 許鳴烝. "An Adaptive Signal Control Model for Inner Junction of the Taipei Bus Station." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/14615105145956185306.

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碩士<br>國立成功大學<br>交通管理學系碩博士班<br>100<br>Transit systems are solutions for the heavy travel demand problems of high-density areas, which play important roles in congestion mitigation, energy conservation and pollutant reduction. Improving bus arrival and departure on-time performance is a critical concern in reducing users’ wait and transfer time. Unlike a single-platform terminal, bus flow interruption in a multi-level-platform terminal could significantly reduce the service quality and deteriorate environmental condition. Significant congestion has been experienced during peak periods at a T-ju

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Liu, Chen-Yi, and 劉蓁宜. "Estimation Rainfall : Based on Received Signal StrengthIndicator of GSM in no Weather Station Environment." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/27198162322288218106.

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碩士<br>元智大學<br>電機工程學系<br>104<br>This study proposes a method, that people just hold mobile device which can received signal strength indicator (RSSI) of GSM, Then, based on RSSI reduction suffered by rain, the method can estimate rain rate in mobile device location, even the environment of location is no weather station. In the past research, some of them use rain rate to compensate rain attenuation of RSSI. The other research use rain attenuation of RSSI with the distance between base station and mobile device to estimate rain rate. In this study, we only use the RSSI measured by mobile devi

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HSIEH, CHI-TING, and 謝奇廷. "The Signal Decoding and Display Interface Designing of Coast Station Digital Selective Calling System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/57372254326209133538.

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碩士<br>國立高雄海洋科技大學<br>電訊工程研究所<br>104<br>Taiwan is the main international maritime transport hub for Northeast Asia. Statistics from the Ministry of Transportation indicate that Taiwan’s import and export of goods by sea and the amount of growth year by year, in addition to daily foreign ships and fishing boats through waters surrounding Taiwan, are closely related to the ocean. In the frequent situation of maritime transport, Taiwan maritime traffic complexity and maritime risk environment have reached a certain degree of risk. Taiwan’s maritime traffic safety also discuss relevant international

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