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Dissertations / Theses on the topic 'Power radio signal attenuation'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Maenou, Takatoshi, and Masaaki Katayama. "Study on Signal Attenuation Characteristics in Power Line Communications." IEEE, 2006. http://hdl.handle.net/2237/7798.

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2

De, Villiers Wernich. "Prediction and measurement of power line carrier signal attenuation and fluctuation." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52410.

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Thesis (MScEng)--University of Stellenbosch, 2001,<br>ENGLISH ABSTRACT: A frequency domain Power Line Carrier (PLC) simulation program, with the ability to simulate signal attenuation including the coupling equipment, was developed. This simulation program was put to the test against the independent program of Professor L.M. Wedepohl and against practical field measurements. The predictions of the two programs were in precise agreement for a wide range of input parameters. Results from the field tests and predictions also showed close agreement. Further investigations, applying the sim

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3

Yang, Hong-Kui. "Low-power oversampled signal processing for digital radio receivers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0005/NQ32351.pdf.

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4

Apostolou, Nikolaos. "Signal synthesis with dynamically-changed power spectral density in a software defined radio transmitter." Thesis, Monterey, California. Naval Postgraduate School, 2003. http://hdl.handle.net/10945/874.

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Approved for public release; distribution is unlimited<br>The objective of this thesis is to synthesize signals with a dynamically change power spectral density, in a SDR transmitter, utilizing the most appropriate channels, modulation schemes and transmission rates for communication, based on the noise profile (AWGN plus interferences) of the link, in order to achieve performance within some predefined acceptable levels. The objective is obtained by simulation.<br>Major, Hellenic Army

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5

Hetzel, Simon Andrew. "Power efficient linear transmitters and the LINC technique." Thesis, University of Bristol, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261286.

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6

Lahdenperä, J. (Juho). "On feasibility of the UE power saving signal for the 5G new radio." Master's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201906072487.

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Abstract. The objective of this thesis is to study and evaluate physical layer signals and channels to achieve the user equipment (UE) power saving in the 3rd generation partnership project (3GPP) new radio (NR). The fifth generation (5G) mobile network has strict objectives regarding power consumption and performance. The UE power consumption also has a big impact on the end user’s quality of experience (QoE) and future deployment of NR devices. Therefore, it is very important to study ways to reduce UE power consumption. One feasible power saving technique is the usage of so-called power sav

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7

Chan, kwong Fu. "Large-signal characterization/modeling and linearization techniques for RF power amplifiers /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202004%20CHANK.

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8

Одарченко, Роман Сергійович, Roman Odarchenko та Одарченко Роман Сергеевич. "Методологія підвищення ефективності функціонування стільникових мереж зв'язку". Thesis, Національний авіаційний університет, 2019. http://er.nau.edu.ua/handle/NAU/38385.

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В роботі було розроблено методологію підвищення ефективності стільникових мереж зв’язку, яка полягає у використанні удосконалено методу планування мережі стільникового зв’язку для розгортання стільникових мереж нового покоління, методу оцінки ключових показників функціонування мережі стільникового оператора з метою безперервної оптимізації мережі оператора шляхом використання методу оптимізації підсистеми базових станцій розгорнутої мережі стільникового оператора, удосконаленого методу розвантаження радіо інтерфейсу мережі стільникового оператора із використанням підмережі Wi-Fi (Wireless Fide

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9

Fioravanti, Paolo. "Large signal design of silicon field effect transistors for linear radio frequency power amplifiers." Thesis, De Montfort University, 2006. http://hdl.handle.net/2086/13294.

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10

Hussain, Sajjad. "PEAK TO AVERAGE POWER RATIO ANALYSIS AND REDUCTION OF COGNITIVE RADIO SIGNALS." Phd thesis, Université Rennes 1, 2009. http://tel.archives-ouvertes.fr/tel-00426930.

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* La multiplication des standards de télécommunications fait apparaître la nécessité de disposer de terminaux multistandard et reconfigurables. Ces nouvelles fonctionnalités trouvent leurs réponses dans le domaine de la radio logicielle. De tels terminaux ne sont pas encore réalisables pour des raisons technologiques liées à la complexité nécessaire à leur réalisation (convertisseurs ultra rapides, processeurs reconfigurables, antennes et amplificateurs très large bande, ....). En se basant alors sur une véritable technologie radio logicielle, la radio intelligente va encore plus loin dans la

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11

Cui, Xian. "Efficient radio frequency power amplifiers for wireless communications." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1195652135.

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12

Oschlisniok, Janusz [Verfasser], Martin [Gutachter] Pätzold, and Andreas [Gutachter] Eckart. "Transport of sulfuric acid in the atmosphere of Venus studied on the basis of radio signal attenuation effects observed in the Venus Express Radio Science Experiment VeRa / Janusz Oschlisniok ; Gutachter: Martin Pätzold, Andreas Eckart." Köln : Universitäts- und Stadtbibliothek Köln, 2020. http://d-nb.info/122171841X/34.

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13

Somasundaram, Meena Sivalingam. "Pulsed power and load-pull measurements for microwave transistors." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0003293.

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14

Pons, Jean-François. "Techniques de réduction de la consommation d'un récepteur radio adaptatif et impacts sur ses performances." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4348.

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L’engouement actuel pour les applications de type réseaux de capteurs sans-fil ou internet des objets (IoT) relance la nécessité, alors initiée par les applications mobiles, de concevoir des émetteurs-récepteurs radio à basse consommation. Dans ce contexte, l’objet des travaux de thèse est de proposer des techniques de réduction de la consommation des récepteurs radio tout en minimisant l’impact sur leur architecture de manière à pouvoir adapter leur consommation aux besoins de performance.Pour ce faire, l’utilisation intermittente du convertisseur analogique numérique (ADC) a, dans un premier

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15

Ratiu, Alin. "Continuous time signal processing for wake-up radios." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0078/document.

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La consommation des systèmes de communication pour l'IoT peut être réduite grâce à un nouveau paradigme de réception radio. La technique consiste à ajouter un récepteur supplémentaire à chaque noeud IoT, appelé Wake Up Radio (WU-RX). Le rôle du WU-RX est de surveiller le canal de communication et de réveiller le récepteur principal (aussi appelé récepteur de données) lors de la réception d'une demande de communication. Une analyse des implémentations des WU-RX existants montre que les systèmes de l'état de l'art sont suffisamment sensibles par rapport aux récepteurs de données classiques mais

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16

Chamas, Ibrahim. "The Analysis and Design of Phase-tunable Low-Power Low-Phase-Noise I/Q Signal Sources for Analog Phase Calibrated Transceivers." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/102076.

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Due to the demand for low-cost, small-form factor and large-scale integration of system-on-chip wireless transceivers, the image-reject, zero-IF and low-IF receiver architectures have become the main topologies used in mainstream wireless communication systems. Consequently, signal sources with quadrature phase outputs [quadrature oscillators (QOs)] are therefore essential, and their phase noise, driving capability, tuning range, oscillation frequency, and power consumption have a major impact on the overall receiver performance. Additionally, it is required that the QO synthesize precise I/Q

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17

Chuang, Kevin. "Multi-gigabit CMOS analog-to-digital converter and mixed-signal demodulator for low-power millimeter-wave communication systems." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/47814.

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The objective of the research is to develop high-speed ADCs and mixed-signal demodulator for multi-gigabit communication systems using millimeter-wave frequency bands in standard CMOS technology. With rapid advancements in semiconductor technologies, mobile communication devices have become more versatile, portable, and inexpensive over the last few decades. However, plagued by the short lifetime of batteries, low power consumption has become an extremely important specification in developing mobile communication devices. The ever-expanding demand of consumers to access and share information u

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18

Dai, Wenhua. "Large signal electro-thermal LDMOSFET modeling and the thermal memory effects in RF power amplifiers." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1078935135.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xix, 156 p.; also includes graphics (some col.). Includes bibliographical references (p. 152-156).

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19

Antoniadis, Antonios. "Moisture calibration of an R.F based inline moisture sensor : An inline moisture sensor based on radio wave attenuation, Microtec M3 Scan, was calibrated to maximise correlation between real water content in wood and received signal." Thesis, Luleå tekniska universitet, Träteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-77359.

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Sensors based on radio waves are used for inline moisture determination in the sawn wood industry. Placed at the final sorting line such a device can be invaluable, giving the operators real time information on the moisture content of the boards passing through. Information that can then be used to improve process control both upstream and downstream. The equipment must first be trained to correlate radio wave attenuation and phase shift to water conten

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20

Zhang, Hao. "Circuit d'amplification Doherty intégré large bande pour applications radio cellulaires de puissance." Thesis, Poitiers, 2019. http://www.theses.fr/2019POIT2265.

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Ces travaux de recherche concernent la conception, la réalisation et la mesure des circuits d’amplification Doherty LDMOS intégrés large-bande pour stations de base, nécessaires au développement de la 5G. Suite à la recherche des techniques pour l’amélioration du rendement électrique pour des signaux à forte dynamique d’amplitude et les possibilités d’intégration, la technique Doherty a été choisie. Des études sur les structures Doherty à deux puis trois voies montrent que l’amélioration de rendement pourra être renforcée et étendue par l’ajout d’un troisième étage avec des tailles de transist

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21

Lolis, Luis. "Agile Bandpass Sampling RF Receivers for low power Applications." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2011. http://tel.archives-ouvertes.fr/tel-00670162.

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Les nouveaux besoins en communications sans fil pussent le développement de systèmes de transmission RF en termes the reconfigurabilité, multistandard et à basse consommation. Cette thèse propose d'une nouvelle architecture de réception capable d'adresser ces aspects. Le sous échantillonnage est appliquée et permet d'exploiter et certain nombre d'avantages liées au traitement du signal à Temps Discret, notamment le filtrage et la décimation, permettant de relâcher les contraintes liées aux ADCs en maintenant des caractéristiques multistandard et de reconfigurabilité. Un simulateur large bande

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22

Bagayoko, Abdoulaye. "Partage du spectre radiofréquence sous contraintes d'interférences." Thesis, Cergy-Pontoise, 2010. http://www.theses.fr/2010CERG0500.

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Le spectre électromagnétique est une ressource naturelle dont l'usage doit être optimisé. Un grand nombre de travaux actuels visent à améliorer l'utilisation des fréquences radio en y introduisant un degré de flexibilité rendu possible par l'agilité en forme d'onde et en fréquence permise par la radio logicielle (SDR), ainsi que par les méthodes de traitement intelligent du signal (radio cognitive). Cette thèse se place dans ce contexte. Concrètement, nous considérons le problème de partage du spectre électromagnétique entre plusieurs utilisateurs sous contraintes d'interférence mutuelle. Notr

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23

Wolf, Florian. "Multi-channel ranging system for the localization of wireless connected objects in low power wide aea networks : From modeling to field trials." Thesis, Limoges, 2020. http://www.theses.fr/2020LIMO0017.

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L'Internet des objets (IoT, pour Internet of Things, en anglais) ouvre la porte vers la réalisation de nouvelles applications, telles que les compteurs intelligents et le suivi environnemental, destinées à adresser nos défis sociétaux et écologiques actuels et futurs. Les objets, possiblement mobiles ou distants, nécessitent une connectivité sans fil pour la centralisation des données et le contrôle à distance. Les réseaux longue portée et basse consommation (LPWA, pour Low Power Wide Area, en anglais) offrent des transmissions radio bande étroite avec une couverture à l’échelle typique d’une

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24

Amado, Laryssa Ramos. "Uma contribuição à análise de técnicas de monitoramento de espectro para sistemas PLC." Universidade Federal de Juiz de Fora (UFJF), 2011. https://repositorio.ufjf.br/jspui/handle/ufjf/4144.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-04-20T18:23:07Z No. of bitstreams: 1 laryssaramosamado.pdf: 2344885 bytes, checksum: 4328135ddbd0305fc11aa0bf0f8f8b61 (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-04-24T16:50:29Z (GMT) No. of bitstreams: 1 laryssaramosamado.pdf: 2344885 bytes, checksum: 4328135ddbd0305fc11aa0bf0f8f8b61 (MD5)<br>Made available in DSpace on 2017-04-24T16:50:29Z (GMT). No. of bitstreams: 1 laryssaramosamado.pdf: 2344885 bytes, checksum: 4328135ddbd0305fc11aa0bf0f8f8b61 (MD5) Previous issue date:

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25

Шестопал, Євген Олександрович, Евгений Александрович Шестопал та Yevgen Shestopal. "Методи покращення енергетичної ефективності та скритності цифрових радіорелейних систем передачі". Thesis, Національний авіаційний університет, 2021. https://er.nau.edu.ua/handle/NAU/52213.

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У дисертаційній роботі вирішена актуальна науково-технічна задача, яка полягає в новому комплексному підході до забезпечення мінімальної потужності передавача, достатньої для одержання заданої ймовірності помилки приймання сигналу, та покращеної скритності передачі інформації. Проведені дослідження впливу виду модуляції сигналу на потужність передавача радіорелейної станції. Показано, що найкращі результати досягаються при використанні 4-х позиційного фазоманіпульованого сигналу ФМ-4. При даній смузі пропускання радіоканалу пропонується використати амплітудно-маніпульований сигнал з під

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26

Sandouno, Bernard Tamba. "Amélioration de la précision des cartes de couverture réseau par des techniques de lancer de rayons." Electronic Thesis or Diss., Université Côte d'Azur, 2024. http://www.theses.fr/2024COAZ4020.

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Le lancer de rayons est un modèle de propagation déterministe qui estime la puissance du signal reçu en des emplacements géographiques spécifiques, en prenant en compte de manière exhaustive des facteurs environnementaux en 3D qui influencent la propagation du signal. Cette grande précision du lancer de rayons se fait toutefois au prix d'une charge de calcul élevée due aux complexités de ses processus. Cette charge de calcul se caractérise par une consommation élevée de la mémoire vive et un temps d'exécution élevé, rendant difficile le calcul efficace de la puissance du signal reçu.Conscients

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27

Tall, Ndiogou. "Etude et réalisation de circuits de récupération d'horloge et de données analogiques et numériques pour des applications bas débit et très faible consommation." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4717.

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Les circuits de récupération d'horloge et de données sont nécessaires au bon fonctionnement de plusieurs systèmes de communication sans fil. Les travaux effectués dans le cadre de cette thèse concernent le développement de ces circuits avec d'une part la réalisation, en technologie HCMOS9 0,13 μm de STMICROELECTRONICS, de circuits CDR analogiques à 1 et 54 Mbit/s, et d'autre part, la mise en œuvre de fonctions CDR numériques programmables à bas débit. Un circuit CDR fonctionnant à plus bas débit (1 Mbit/s) a été conçu dans le cadre de la gestion d'énergie d'un récepteur ULB impulsionnel non co

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28

Михалевський, Дмитро Валерійович. "Методологія підвищення ефективності оцінювання параметрів і характеристик радіоканалів корпоративних телекомунікаційних мереж". Diss., Вінницький національний технічний університет, 2021. https://ena.lpnu.ua/handle/ntb/56697.

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Дисертаційна робота присвячена вирішенню актуальної науково-прикладної проблеми розроблення методології оцінювання параметрів та характеристик радіоканалів із врахуванням максимально-можливої кількості різноманітних факторів впливу на базі статистичних зв’язків між ними з метою підвищення технічної ефективності корпоративних телекомунікаційних мереж на етапах проектування та оптимізації. Для вирішення проблеми використано методи математичної статистики та регресійного аналізу результатів експериментальних досліджень, на основі яких, було розроблено методи оцінювання основних параметрів радіо

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29

Lin, Wen-Jin, and 林文進. "Signal Attenuation on Three-Phase Power Distribution Lines with Field Test Data." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/41540469670867749446.

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碩士<br>國立臺灣科技大學<br>工程技術研究所<br>81<br>Distribution-Line-Carrier (DLC) can serve as a meduim of two- way communication for load management and distribution automation. Attenuation analysis of DLC signal along complicated distribution systems network is indispensable to achieving an acceptable level of reliability to satisfy two-way communication requirements on DLC communication system. In this thesis, emphasis has been placed on analyzing the DLC from calculation of the distributed parameters

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30

Thuong, Le-Tien. "Radio frequency seeker signal processing using wavelets." Thesis, 1998. https://eprints.utas.edu.au/22034/1/whole_ThuongLe-Tien1998_thesis.pdf.

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31

Mrabet, Nizar. "Mixed-Signal Multimode Radio Software/Hardware Development Platform." Thesis, 2012. http://hdl.handle.net/10012/7156.

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Radio frequency power amplifiers (PAs) are the most challenging part of the design of radio systems since they dictate the overall system's performance in terms of power efficiency and distortion generation. The performance is further challenged by modern modulation schemes which are characterized by highly varying signal envelopes. In order to meet the spectrum mask requirements, PAs are usually operated at high power back-off to ensure linearity, at the cost of efficiency. To tackle this issue, many efficiency enhancement techniques have been presented in the literature. In fact, these techn

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Malinga, Senzo Jerome. "Determination of millimetric signal attenuation due to rain using rain rate and raindrop size distribution models for Southern Africa." Thesis, 2014. http://hdl.handle.net/10413/11206.

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The advantages offered by Super High Frequency (SHF) and Extremely High Frequency (EHF) bands such as large bandwidth, small antenna size, and easy installation or deployment have motivated the interest of researchers to study those factors that prevent optimum utilization of these bands. Under precipitation conditions, factors such as clouds, hail, fog, snow, ice crystals and rain degrade link performance. Rain fade, however, remains the dominant factor in the signal loss or signal fading over satellite and terrestrial links especially in the tropical and sub-tropical regions within which Sou

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33

"A low power signal front-end for passive UHF RFID transponders with a new clock recovery circuit." 2009. http://library.cuhk.edu.hk/record=b5894042.

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Chan, Chi Fat.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2009.<br>Includes bibliographical references.<br>Abstracts in English and Chinese.<br>Abstract --- p.2<br>摘要 --- p.5<br>Acknowledgement --- p.7<br>Table of Contents --- p.9<br>List of Figures --- p.11<br>List of Tables --- p.14<br>Chapter 1. --- Introduction --- p.15<br>Chapter 1.2. --- Research Objectives --- p.16<br>Chapter 1.3. --- Thesis Organization --- p.18<br>Chapter 1.4. --- References --- p.19<br>Chapter 2. --- Overview of Passive UHF RFID Transponders --- p.20<br>Chapter 2.1. --- Types of RFID Transponder

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34

Cai, Zibo. "Impulse radio intrabody communication system for wireless body area networks." Thesis, 2015. https://vuir.vu.edu.au/26283/.

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Intrabody communications (IBC) is a novel physical layer outlined in the recently ratified IEEE 802.15.6 Wireless Body Area Network (WBAN) standard. This data communication method uses the human body itself as the signal propagation medium.

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35

Ghosal, Kaushik. "Power Scaling Mechanism for Low Power Wireless Receivers." Thesis, 2015. http://etd.iisc.ac.in/handle/2005/3767.

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LOW power operation for wireless radio receivers has been gaining importance lately on account of the recent spurt of growth in the usage of ubiquitous embedded mobile devices. These devices are becoming relevant in all domains of human influence. In most cases battery life for these devices continue to be an us-age bottleneck as energy storage techniques have not kept pace with the growing demand of such mobile computing devices. Many applications of these radios have limitations on recharge cycle, i.e. the radio needs to last out of a battery for long duration. This will specially be true fo

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Ghosal, Kaushik. "Power Scaling Mechanism for Low Power Wireless Receivers." Thesis, 2015. http://etd.iisc.ernet.in/2005/3767.

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LOW power operation for wireless radio receivers has been gaining importance lately on account of the recent spurt of growth in the usage of ubiquitous embedded mobile devices. These devices are becoming relevant in all domains of human influence. In most cases battery life for these devices continue to be an us-age bottleneck as energy storage techniques have not kept pace with the growing demand of such mobile computing devices. Many applications of these radios have limitations on recharge cycle, i.e. the radio needs to last out of a battery for long duration. This will specially be true fo

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37

Raja, Immanuel. "Fully Integrated CMOS Transmitter and Power Amplifier for Software-Defined Radios and Cognitive Radios." Thesis, 2017. http://etd.iisc.ac.in/handle/2005/3559.

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Software Defined Radios (SDRs) and Cognitive Radios (CRs) pave the way for next-generation radio technology. They promise versatility, flexibility and cognition which can revolutionize communications systems. However they present greater challenges to the design of radio frequency (RF) front-ends. RF front-ends for the radios in use today are narrow-band in their frequency response and are optimized and tuned to the carrier frequency of interest. SDRs and CRs demand front-ends which are versatile, configurable, tunable and be capable of transmitting and receiving signals with different bandwid

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38

Raja, Immanuel. "Fully Integrated CMOS Transmitter and Power Amplifier for Software-Defined Radios and Cognitive Radios." Thesis, 2017. http://etd.iisc.ernet.in/2005/3559.

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Abstract:

Software Defined Radios (SDRs) and Cognitive Radios (CRs) pave the way for next-generation radio technology. They promise versatility, flexibility and cognition which can revolutionize communications systems. However they present greater challenges to the design of radio frequency (RF) front-ends. RF front-ends for the radios in use today are narrow-band in their frequency response and are optimized and tuned to the carrier frequency of interest. SDRs and CRs demand front-ends which are versatile, configurable, tunable and be capable of transmitting and receiving signals with different bandwid

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39

(11178318), Debayan Das. "Advanced EM/Power Side-Channel Attacks and Low-overhead Circuit-level Countermeasures." Thesis, 2021.

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Abstract:

<div>The huge gamut of today’s internet-connected embedded devices has led to increasing concerns regarding the security and confidentiality of data. To address these requirements, most embedded devices employ cryptographic algorithms, which are computationally secure. Despite such mathematical guarantees, as these algorithms are implemented on a physical platform, they leak critical information in the form of power consumption, electromagnetic (EM) radiation, timing, cache hits and misses, and so on, leading to side-channel analysis (SCA) attacks. Non-profiled SCA attacks like differential/co

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40

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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Abstract:

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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