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Dissertations / Theses on the topic 'Telecommunication range'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Сальников, Д. С., А. И. Цопа, В. В. Павликов, А. Д. Собколов, and Н. В. Руженцев. "Millimeter-Range Radiometric System for Perspective Problems of Meteorology and Telecommunication." Thesis, Kyiv: Ukraine, 2017. http://openarchive.nure.ua/handle/document/5696.

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Short description of new ground radiometric complex, working on 40 GHz and 94 GHz frequencies and providing remote continuous measurements of full vertical atmosphere attenuation, effective temperature values and liquid-water content of clouds, integral content of vaporous moisture in atmosphere. The feature of the complex is the availability of digital signal processing of detected signals mode.

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2

Ozyurek, Serkan. "Image Dynamic Range Enhancement." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613603/index.pdf.

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In this thesis, image dynamic range enhancement methods are studied in order to solve the problem of representing high dynamic range scenes with low dynamic range images. For this purpose, two main image dynamic range enhancement methods, which are high dynamic range imaging and exposure fusion, are studied. More detailed analysis of exposure fusion algorithms are carried out because the whole enhancement process in the exposure fusion is performed in low dynamic range, and they do not need any prior information about input images. In order to evaluate the performances of exposure fusion algor

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3

Rattananon, Sanchai Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "RPX ??? a system for extending the IPv4 address range." Awarded by:University of New South Wales. School of Electrical Engineering and Telecommunications, 2006. http://handle.unsw.edu.au/1959.4/30210.

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In recent times, the imminent lack of public IPv4 addresses has attracted the attention of both the research community and industry. The cellular industry has decided to combat this problem by using IPv6 for all new terminals. However, the success of 3G network deployment will depend on the services offered to end users. Currently, almost all services reside in the IPv4 address space, making them inaccessible to users in IPv6 networks. Thus, an intermediate translation mechanism is required. Previous studies on network address translation methods have shown that Realm Base Kluge Address Heuris

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4

Kurt, Sinan. "Range Resolution Improvement Of Fmcw Radars." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608808/index.pdf.

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Frequency Modulated Continuous Wave (FMCW) radar has wide application areas in both civil and military use. The range resolution is a critical concept for these FMCW radars as for the other radar types. There are theoretical restrictions in the range resolution. In addition, the non-ideal properties of the modules used in the systems negatively affects the range resolution. The transmitter leakage, non-linear frequency sweep, FM to AM distortion and measurement errors are some of the critical non-ideal properties. The problems arising from these non-ideal properties further restrict the range

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5

Björsell, Joachim. "Long Range Channel Predictions for Broadband Systems : Predictor antenna experiments and interpolation of Kalman predictions." Thesis, Uppsala universitet, Signaler och System, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-281058.

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The field of wireless communication is under massive development and the demands on the cellular system, especially, are constantly increasing as the utilizing devices are increasing in number and diversity. A key component of wireless communication is the knowledge of the channel, i.e, how the signal is affected when sent over the wireless medium. Channel prediction is one concept which can improve current techniques or enable new ones in order to increase the performance of the cellular system. Firstly, this report will investigate the concept of a predictor antenna on new, extensive measure

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6

Akhanli, Deniz. "Radar Range-doppler Imaging Using Joint Time-frequency Techniques." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608325/index.pdf.

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Inverse Synthetic Aperture Radar coherently processes the return signal from the target in order to construct the image of the target. The conventional methodology used for obtaining the image is the Fourier transform which is not capable of suppressing the Doppler change in the return signal. As a result, Range-Doppler image is degraded. A proper time-frequency transform suppresses the degradation due to time varying Doppler shift. In this thesis, high resolution joint-time frequency transformations that can be used in place of the conventional method are evaluated. Wigner-Ville Distribution

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7

Jawdat, Suzan. "Dynamic nonlinear pre-distortion of signal generators for improved dynamic range." Thesis, University of Gävle, Department of Technology and Built Environment, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-4945.

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<p>In this thesis, a parsimoniously parameterized digital predistorter is derived for linearization of the IQ modulation mismatch and the amplifier imperfection in the signal generator [1]. It is shown that the resulting predistorter is linear in its parameters, and thus they may be estimated by the method of least-squares. Spectrally pure signals are an indispensable requirement when the signal generator is to be used as part of a test bed. Due to the non-linear characteristic of the IQ modulator and power amplifier, distortion will be present at the output of the signal generator. The device

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8

Kilic, Argun. "Implementation Of A Digital Signal Synthesizer With High Spurious Free Dynamic Range." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/3/12607406/index.pdf.

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Today&amp<br>#8217<br>s analog modulators and upconverters are inadequate to synthesize and modulate signals with high &amp<br>#8216<br>Spurious Free Dynamic Range&amp<br>#8217<br>(SFDR). Thus, the main objective of this thesis is to design and implement a &amp<br>#8216<br>Digital Signal Synthesizer&amp<br>#8217<br>(DSS) that is capable of synthesizing signals between 50-100 MHz with 60dB SFDR and to modulate them variable symbol rates and modulation techniques with very high phase/frequency resolution and switching speed while keeping the amplitude modulation occurring during a modulated symb

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9

Yildiz, Inanc. "Design And Construction Of Reduced Size Planar Spiral Antenna In The 0.5-18 Ghz Frequency Range." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605610/index.pdf.

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iv ABSTRACT DESIGN AND CONSTRUCTION OF REDUCED SIZE PLANAR SPIRAL ANTENNA IN THE 0.5-18 GHz FREQUENCY RANGE YILDIZ, 5nan&ccedil<br>M.S., Department of Electrical and Electronics Engineering Supervisor: Prof. Dr. Altunkan HIZAL October 2004, 106 pages In this thesis, theoretical and practical evaluation of usual spiral antenna is revised. Working principles of both types of planar spiral antennas as Equiangular and Archimedean are introduced. A predesigned microstrip tapered balun used for feeding section of a spiral antenna is simulated on Ansoft HFSS software. Successful simulation results ar

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10

Ozdemir, Secil. "An Adaptive Fast Time Radar Receiving Filter For Minimization Of Clutter And Time Side-lobes." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615325/index.pdf.

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In this thesis, a maximum likelihood receiver to obtain the target range profile that uses the clutter prediction derived from the target-free previous observations is suggested as a fast time processor for pulse compression radar systems. The maximum likelihood receiver is proposed to overcome the range sidelobe problem, which is introduced by the pulse compression method. Conventional methods, such as the matched filter receiver, as fast time processor result in the targets with high radar cross sec- tion masking the low radar cross section targets at the neighboring range cells<br>since sid

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11

Eslinger, Brian, and Tom Young. "BRINGING RANGES CLOSER TOGETHER – NEW OPPORTUNITIES IN RANGE INTERCONNECTIVITY." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/606748.

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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>Test and training ranges have sought the holy grail of large-scale range interconnectivity for many years. The ability to test at any range and transmit the information to the engineers at the home base and control the mission without sending the entire test team to a remote location improves the test schedules, reduces the cost of testing and improves the testing capabilities. New opportunities of interconnecting ranges are changing the business of open air range

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12

Fares, Rasha H. A. "Performance modelling and analysis of congestion control mechanisms for communication networks with quality of service constraints. An investigation into new methods of controlling congestion and mean delay in communication networks with both short range dependent and long range dependent traffic." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/5435.

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Active Queue Management (AQM) schemes are used for ensuring the Quality of Service (QoS) in telecommunication networks. However, they are sensitive to parameter settings and have weaknesses in detecting and controlling congestion under dynamically changing network situations. Another drawback for the AQM algorithms is that they have been applied only on the Markovian models which are considered as Short Range Dependent (SRD) traffic models. However, traffic measurements from communication networks have shown that network traffic can exhibit self-similar as well as Long Range Dependent (LRD) pr

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13

Fares, Rasha Hamed Abdel Moaty. "Performance modelling and analysis of congestion control mechanisms for communication networks with quality of service constraints : an investigation into new methods of controlling congestion and mean delay in communication networks with both short range dependent and long range dependent traffic." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/5435.

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Active Queue Management (AQM) schemes are used for ensuring the Quality of Service (QoS) in telecommunication networks. However, they are sensitive to parameter settings and have weaknesses in detecting and controlling congestion under dynamically changing network situations. Another drawback for the AQM algorithms is that they have been applied only on the Markovian models which are considered as Short Range Dependent (SRD) traffic models. However, traffic measurements from communication networks have shown that network traffic can exhibit self-similar as well as Long Range Dependent (LRD) pr

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14

Кисельов, Вячеслав Олександрович. "Дослідження параметрів сигналів цифрового телебачення при їх передаванні по радіолінії терагерцового діапазону". Master's thesis, Київ, 2018. https://ela.kpi.ua/handle/123456789/23468.

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Робота містить 103 сторінки, 73 рисунки, 10 таблиць. Було використано 18 джерел. Актуальність теми Використання терагерцового діапазону в телекомунікаціях перспективно в силу перевантаженості діапазонів більш низьких частот, зростання інформаційного трафіку, який вимагає передачі гігабітних цифрових потоків по лініях зв'язку є актуальним. Тому передбачається створення принципово нових за габаритами, завадозахищеності та енергоефективності пристроїв суб- та терагерцового діапазону для високошвидкісного передавання відеосигналів, для радіорелейних систем прямої видимості, для транспортних мере

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15

Kahyaoglu, Nazli Deniz. "Spectral And Statistical Analyses Of Experimental Radar Clutter Data." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612799/index.pdf.

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The performance of radar detection and imaging systems strongly depends on the characteristics of radar clutter. In order to improve the radar signal processing algorithms, successful analysis and modeling of radar clutter are required. For a successful model of radar clutter, both the spectral and statistical characteristics of the clutter should be revealed. Within the scope of this study, an experimental radar data acquisition system is established to analyze radar clutter. The hardware and the data processing system are first verified using generic signals and then a set of measurements is

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16

Mercan, Hasan. "Nonuniform Pulse Repetition Interval Optimization For Pulse Doppler Radars." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/2/12605619/index.pdf.

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In this thesis, a method of optimization of nonuniform pulse repetition interval for pulse Doppler radars is investigated. PRI jittering technique is used for the selection of inter-pulse intervals. An environment with white Gaussian noise and clutter interference is defined and applying generalized likelihood ratio test, a sufficient statistic function for the detection of the target is derived. The effect of jitter set selection on range and Doppler ambiguity resolution and clutter rejection is investigated. Jitter sets for Doppler ambiguity resolution are investigated by the minimization of

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17

Cairó, i. Molins Josep Ignasi. "Short Range Device platform for NFC and RFID wireless Telecommunications." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/672389.

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In this thesis, it is analyzed in detail aspects related to compact RFID radio communications design, and its interaction with di erent sort of elements starting from passive tags, the most widely used interface in RFID world. Ending with application of RFID sensor semi-passive tags, where a new sort of technologies are emerging in this interesting eld. With the idea of facilitating the introduction of such RFID sensing new technologies, we have developed and RFID reader that is very compact in design, and uses the mobile phone as the main human interface. For that purpose,

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18

Lindquist, Tim. "Wave Propagation Models in the Troposphere for Long-Range UHF/SHF Radio Connections." Thesis, Karlstads universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-80679.

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19

Erguven, Sait. "Path Extraction Of Low Snr Dim Targets From Grayscale 2-d Image Sequences." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607723/index.pdf.

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In this thesis, an algorithm for visual detecting and tracking of very low SNR targets, i.e. dim targets, is developed. Image processing of single frame in time cannot be used for this aim due to the closeness of intensity spectrums of the background and target. Therefore<br>change detection of super pixels, a group of pixels that has sufficient statistics for likelihood ratio testing, is proposed. Super pixels that are determined as transition points are signed on a binary difference matrix and grouped by 4-Connected Labeling method. Each label is processed to find its vector movement in the

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20

Douglas, Steven R. "Network Configuration for Range Interconnectivity." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/611745.

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International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, California<br>A demonstration of near real-time performance assessment for the Program Executive Officer for Cruise Missiles Project and Unmanned Aerial Vehicles, Cruise Test Directorate, PEO(CU)-CT, was conducted between 22 March 1994 through 4 May 1994. The demonstration involved the temporary installation of a portable TOMAHAWK telemetry recording and telecommunications capability at the Air Force Development Test Center range at Eglin Air Force Base, Florida and

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21

Eslinger, Brian, and Bob Kovach. "RANGE COMMANDER’S COUNCIL (RCC) TELECOMMUNICATIONS AND TIMING GROUP (TTG) UPDATE ON TM OVER IP STANDARD DEVELOPMENT." International Foundation for Telemetering, 2007. http://hdl.handle.net/10150/604588.

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ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>The RCC TTG initiated task TT-49 to generate a standard for the transport of serial streaming telemetry (TM) over the Internet Protocol (IP). An ad hoc committee was activated comprised of Range and vendor participation to develop this standard. This paper will address the progress of the standard, the use of commercial standards, and the benefits to the ranges. The early meetings focused

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22

Iglesias, Olmedo Miguel. "Impairment Mitigation in High Capacity and Cost-efficient Optical Data Links." Doctoral thesis, KTH, Optik och Fotonik, OFO, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208101.

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The work presented in this thesis fits within the broader area of fiber optics communications. This is an important area of research as it provides a breeding ground for the present and future technologies supporting the Internet. Due to the ever-increasing bandwidth demands worldwide, the network infrastructures that make up the Internet are continuously being upgraded. This thesis aims to identify key segments of the Internet that are deemed to become the Internet's bottleneck if new technology does not replace the current one. These are datacenter intra and inter-connects, and metropolitan

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23

Heathman, Anne Catherine. "Methods for intermodulation prediction in communication systems : identification and mitigation of problems of computational unreliability in predicting wide dynamic range spectra produced by signal interactions in the non-linear elements of." Thesis, University of Bradford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235567.

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24

Lozano, Castro Diego Enrique. "Investigation on electrically small antennas in the microwave range for the wireless transfer of power." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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According to Ericsson’s Mobility report of November 2020, it is estimated that mobile subscriptions will increase to 8.8 billion by the end of 2026, of which 91 percent will be for mobile broadband. It is projected that the number of unique mobile subscribers be 6.4 billion by the end of the forecast period. Continuous growth in smartphone penetration and subscriptions associated with smartphones account for about 75 percent of all mobile phone subscriptions. Such a huge growth in demand puts significant pressure on electronic and RF engineers, that need to develop compact, reliable devices

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25

Amorosi, Davide. "Analog signal generation with Raspberry Pi boards for short-range communications." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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The aim of this thesis is to realise a low-cost wireless application for short range underwater communications, using ultrasonic frequencies. The project can be described in four main steps. The first one is a detailed study of the serial peripheral interface. It has been carried out in order to understand how to physically and logically connect, through SPI, the hardware involved in this work: a Raspberry Pi 3 model B and the MCP4822 digital to analog converter embedded in the ADC-DAC Pi Zero module. The second phase concerns a Simulink model created in order to reduce the complexity of the p

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26

De, Vega Rodrigo Miguel. "Modeling future all-optical networks without buffering capabilities." Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210455.

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In this thesis we provide a model for a bufferless optical burst switching (OBS) and an optical packet switching (OPS) network. The thesis is divided in three parts. <p><p>In the first part we introduce the basic functionality and structure of OBS and OPS networks. We identify the blocking probability as the main performance parameter of interest. <p><p>In the second part we study the statistical properties of the traffic that will likely run through these networks. We use for this purpose a set of traffic traces obtained from the Universidad Politécnica de Catalunya. Our conclusion is that tr

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27

Vallérian, Mathieu. "Une infrastructure flexible de collecte et de traitement de données d’un réseau de capteurs urbain mutualisé." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI058/document.

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Dans les réseaux de capteurs urbains, les nœuds émettent des signaux en utilisant plusieurs protocoles de communication qui coexistent. Ces protocoles étant en évolution permanente, une approche orientée radio logicielle semble être la meilleure manière d’intégrer tous les protocoles sur la passerelle collectant les données. Tous les signaux sont donc numérisés en une fois. La grande plage dynamique des signaux reçus est alors le principal problème : ceux-ci peuvent être reçus avec une puissance très variable selon les conditions de propagation. Dans le cas d’une réception simultanée, le Conve

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28

Huang, Yu-Yen, and 黃玉燕. "Integration of Wireless Network and Bluetooth Telecommunication for Indoor Short-Range Location-Base Service and Guiding Applications." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/48428509615128551392.

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碩士<br>醒吾技術學院<br>資訊科技應用研究所<br>97<br>A real time guiding system and uses this system applied to museums, art gallery, campus, warehouse or large outdoor Zoo, etc. was designs in this paper. The entire system are using Bluetooth technology as a location base service and using Wi - Fi technology as a data transfer and using remote server as an information database. The system is using Microsoft Visual Studio C # as programming language, SQL Server as data- base management system, and the Microsoft Windows Server 2003 operating system as remote data server. A web service is constructed to do an int

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Prakash, Daiva. "Design Of 1400W Telecom Power Supply With Wide Range Input AC Voltage." Thesis, 2007. https://etd.iisc.ac.in/handle/2005/575.

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In the fast growing field of Telecommunications, the back up DC power supply plays a vital role in powering the telecom equipment. This DC power supply is a combination of AC-DC Rectifier coupled with a battery bank to support the load when AC input is not available. Figures 0.1 and 0.2 show the line diagram of the DC power supply. The power supply is the most critical element in a telecom installation and it should be highly reliable in order to have un-interrupted service. (Fig) Besides reliability, power density and cost are the driving forces behind the success of a power supply in th

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Prakash, Daiva. "Design Of 1400W Telecom Power Supply With Wide Range Input AC Voltage." Thesis, 2007. http://hdl.handle.net/2005/575.

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In the fast growing field of Telecommunications, the back up DC power supply plays a vital role in powering the telecom equipment. This DC power supply is a combination of AC-DC Rectifier coupled with a battery bank to support the load when AC input is not available. Figures 0.1 and 0.2 show the line diagram of the DC power supply. The power supply is the most critical element in a telecom installation and it should be highly reliable in order to have un-interrupted service. (Fig) Besides reliability, power density and cost are the driving forces behind the success of a power supply in the

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