Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 59 for “"telecommunication systems"”.
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Novel techniques and materials for optical telecommunication systems
… approaches to the implementation of several key telecommunications operations. It can be divided into two distinct parts. <br/><br/>The first part relates to the generation and coherent manipulation of short pulses in all-fibre systems. The development of an actively and harmonically mode-locked …
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Effective identities for trusted interactions in converged telecommunication systems
Telecommunication systems have evolved significantly and the recent convergence of telephony allows users to communicate through landlines, mobile phones and Voice over IP (VoIP) phones. Unfortunately this convergence has resulted in easy manipulation of caller identity, resulting in both VoIP spam …
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Strengthening Security Foundations in Next-G Wireless Telecommunication Systems
… of next-generation (Next-G) wireless telecommunication systems. It addresses the security challenges resulting from emerging and innovative concepts within these systems. We use case studies for in-depth investigation and analysis, with a particular focus on the Open Radio Access …
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Development and Implementation of Wireless Telecommunication Systems a Collection of Relevant Hardware and Software Patents
Modern telecommunication systems and standards are mainly dependent on the availability of digital signal processing capabilities of appropriate hardware components. Two main categories can be distinguished in the development of digital signal processing units. On the one hand a number of general …
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Management of telecommunication systems design and development : learning from disruptive innovations in 3G mobile systems
Disruptive innovations in network systems are forcing mobile carriers to manage difficult network software development. Within the limited development time, mobile carriers are required to develop large scale, high quality and robust network software, and accomplish smooth transition/upgrading. In …
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Digital space/physical place: Systems for community growth
This thesis investigates how synchronous systems of digital space and physical place can play a role in developing community through access to information technology and the formation of networks. It looks at how a community technology network can develop through a synthesis of the community …
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Analysis of modern analog and digital communication channels from a manager's perspective
… systeis are made, it is evident that the telecommunication systems manager must understand the fundamental principles cf the transmission channel in order to effect viable solutions to telecommunications management problems.
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Numerical modelling of advanced modulation formats and WDM transmission
… modelling formats in high-speed fibre lightwave systems. The first part of this work focuses on numerical optimisation of dense wavelength division multiplexing (DWDM) system design. We employ advanced spectral domain filtering techniques and carrier pulse reshaping. We then apply these …
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Deposition of electronic and plasmonic materials inside microstructured optical fibres
… digital information. Nowadays, modern optical telecommunication systems make use of semiconductor optoelectronic devices to generate, control and detect light. The union of the two technologies, namely fibre photonics and semiconductor electronics is expected to have a major impact on next …
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Radijo bangų difrakcijos ir spindulių trasavimo metodų palyginimas urbanizuotose vietovėse /
Telecommunication is a key element of modern civilization, and we can find applications of it in every sphere. Most of the world has and uses a mobile telecommunication device, for example a smartphone, which can send and receive information packets through radio waves. Telecommunication systems …
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Reliable Bandwidth Conservative Queue-End Detection and Warning System Using Smart Phone Collaboration Techniques
… create congestion both on the road and in the telecommunication network. The more severe the road congestion is, the more vulnerable the tail end of the congestion is to rear end collisions. In order to avoid rear end collisions, it is important to know the end location of the traffic jam (i.e. …
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Nonlinear Adaptive Estimation Andits Application To Synchronization Of Lorenz System
… coherent detection or the message decoding in telecommunication systems.
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Išorinio poveikio įtaka terahercų taikymams telekomunikacijose /
… and cost, easy-integrated planar solution for telecommunication systems in THz bands. Therefore, the zone plate design, in which reflection-reducing and focusing features are compatible on one 500 µm thick silicon substrate, was consistently optimized and produced using laser-ablation. Focusing …
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Impact of external effects on terahertz applications for telecommunications /
… and cost, easy-integrated planar solution for telecommunication systems in THz bands. Therefore, the zone plate design, in which reflection-reducing and focusing features are compatible on one 500 µm thick silicon substrate, was consistently optimized and produced using laser-ablation. Focusing …
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Utilizing optimal nulling to increase the number of supported wireless users over conventional beamforming
… data present challenges to the healthy growth of telecommunication systems that is needed to support high-density environments. Multiple-antenna systems are deployed at base stations to support multiple users simultaneously on the same frequency, taking advantage of beamforming spatial diversity. …
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Opto-VLSI based WDM multifunction device
The tremendous expansion of telecommunication services in the past decade, in part due to the growth of the Internet, has made the development of high-bandwidth optical net-works a focus of research interest. The implementation of Dense-Wavelength Division Multiplexing (DWDM) optical fiber …
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Resonant UPS topologies for the emerging hybrid fiber coaxial networks
Uninterruptible power supply (UPS) systems have been extensively applied to feed critical loads in many areas. Typical examples of critical loads include life-support equipment, computers and telecommunication systems. Although all UPS systems have a common purpose to provide continuous power-to …
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Fabrication and application of short and novel structure in-fibre Bragg gratings
… length limited fibre Bragg gratings for use in telecommunication systems as filters. Application to devices designed for use in WDM systems is presented. The use of fibre Bragg gratings as high spatial resolution distributed sensors is investigated. Grating sensing arrays comprising very short …
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Advanced dynamic response improvement methods for dc-dc power electronic converters
… power to digital processors, data centers, and telecommunication systems are required to exhibit a fast dynamic response in response to their instantaneous electric load variations. This requirement is becoming more and more stringent as the operating voltage of such loads is continuously …
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