Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 154 for “"4G"”.
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Security Management System for 4G Heterogeneous Networks
… of research. The current fourth generation (4G) of mobile networks are expected to provide high speed connections anywhere at any time. Various existing 4G architectures such as LTE and WiMax support only wireless technologies, while an alternative architecture, Y-Comm, has been proposed to …
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Automated troubleshooting for RTWP in 3G/4G RAN nodes
Nowadays, Mobile Network Operators are confronted with many challenges to operate and maintain their network. Subscribers expect stable and perpetual services. Repeated interruptions of services will result in the dissatisfaction of users and may lead to losing the end user. One of the major issues …
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Enabling Dynamic Spectrum Access in 4G Networks and Beyond
As early as 2014, mobile network operators' spectral capacity will be overwhelmed by the demand brought on by new devices and applications. To augment capacity and meet this demand, operators may choose to deploy a Dynamic Spectrum Access (DSA) overlay. Spectrum regulation is following suit, with …
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Wireless LAN performance studies in the context of 4G networks
… into the 4th generation mobile networks (4G) that is being discussed nowadays. Therefore, it has to be able to cope with interactive voice and video traffic while still offering high data rates for best effort traffic. Let us assume a scenario where a huge office complex is completely …
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Planning and optimisation of 4G/5G mobile networks and beyond
As mobile networks continue to evolve, two major problems have always existed that greatly affect the quality of service that users experience. These problems are (1) efficient resource management for users at the edge of the network and those in a network coverage hole. (2) network coverage such …
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Adaptive multimedia streaming control algorithm in wireless LANs and 4G networks
E-learning has become an important service offered over the Internet. Lately many users are accessing learning content via wireless networks and using mobile devices. Most content is rich media-based and often puts significant pressure on the existing wireless networks in order to support high …
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Optimisation of Performance of 4G Mobile Networks in High Load Conditions
The signalling subsystem of the LTE (Long Term Evolution) networks inherited some of the limitations of its preceding technologies. It is vulnerable to overload situations that occur as a consequence of unpredicted user behaviour. The most sensitive zones are the paging procedure and random access …
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Resource Allocation for Smart Phones in 4G LTE-Advanced Carrier Aggregation
The purpose of this thesis is to explore the concept of resource scheduling and pricing and its relation to carrier aggregation. The first main topic is a modified Frank Kelly algorithm that allows for the use of utility functions that are piecewise concave, but not a member of a strictly …
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Network selection and optimisation of 4G heterogeneous multi-hop broadband wireless networks
Wireless Heterogeneous Networking (HetNet) offers the potential to be one of the most promising approaches to meeting escalating network capacity demands cost-effectively. The main challenge facing the deployment of HetNets is provisioning backhaul connectivity for small cells and the selection is …
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On the Feasibility of Utilizing Commercial 4G LTE Systems for Misson-Critical IoT Applications
… is an emerging consensus that Fourth Generation (4G) and 5G cellular technologies will enable and support these applications, as they will provide the global mobile connectivity to the anticipated tens of billions of things/devices that will be attached to the Internet.</p> <p>Many vital utilities …
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Improving fractional frequency reuse (FFR) for interference mitigation in Multi-tier 4G wireless networks
The need to provide quality indoor coverage for mobile network users in an indoor environment has become paramount to communication service providers (CSPs). Femto-cells due to their low capital expenditure (CAPEX) and operating expenditure (OPEX) have seen widespread adoption as a possible …
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Design, Implementation, and Evaluation of a Telehaptics System over a 4G Mobile Network Testbed
… be achieved over modern mobile networks such as 4G and 5G. Unfortunately, mobile network coverage in most LMICs is limited, with the dominant technologies being 2G and 3G. Consequently, 4G and 5G mobile network testbeds have been implemented using open-source software frameworks and commercial …
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Demonstration of an Effective 4G LTE Network Simulator to Analyze Performance and Ensure Reliable Communication
… thesis outlines the requirement for an effective 4G LTE simulator that can model the real world cellular network by considering the various effects on a wireless network like fading, pathloss, number of users and resource allocation. It can then explore various aspects of 4G LTE that contributes …
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Security Issues for Modern Communications Systems: Fundamental Electronic Warfare Tactics for 4G Systems and Beyond
… jammers directly pertain to fourth generation (4G) communication standards, as well as future standards employing similar physical layer technologies. This paper investigates a number of threats to the technologies utilized by 4G and future systems, as well as potential improvements to the …
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A Measurement of the Reactions (Bar)p/p Going to Eta/eta, (Bar)p/p Going to Pi(0)/eta and (Bar)p/p Going to Pi(0)/pi(0) From 1.188 GeV/c to 1.445 GeV/c
The reactions p&d1;p→hh→4g ,p&d1;p→p 0h→4g and p&d1;p→p0p 0→4g were investigated at incident antiproton momenta between 1.188 and 1.445 GeV/c using the Low Energy Antiproton Ring (LEAR) at CERN. This investigation was part of an overall program searching for exotic …
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Design of fractal minkowski diversity antenna for LTE and WIFI application
The 4th Generation (4G) in which world has recently entered and many of the bigger operators and vendors have started deploying 4G networks in different countries. 4G includes higher releases of following two standards: Wireless Interoperability Microwave Access (WiMAX) and Long Term Evolution …
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Global fibrinolytic potential of black South Africans in the North West Province
… in the PAI-1 gene promoter area (the 4G/5G polymorphism, the novel SNP C428T and SNP G429A (previously identified)), and the influence of these polymorphisms on PAI-1act levels and CLT. The frequency of the 5G allele was high (0.85) in comparison with previously reported literature. …
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