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 17 of 17 for “"3G/4G"”.
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Automated troubleshooting for RTWP in 3G/4G RAN nodes
… that can lead to an RTWP alarm in a mobile 3G RAN. In addition, each of these cases has different diagnoses and troubleshooting methods. The main idea of this project is to design a Graphical User Interface (GUI) tool to help the Front Office (FO) or Back Office (BO) engineer in mobile …
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Resource Allocation for Next Generation Radio Access Networks
… consider capacity maximisation in co-channel 4G (LTE) networks, then we proceed to capacity maximisation in mixed LTE (including licensed LTE small cells) and 802.11 (WiFi) networks. And finally we study energy efficient capacity maximisation of dense 3G/4G co-channel small cell networks. In …
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Screen time: an exploratory study of the experience of pupils in the final year of primary school using Interpretative Phenomenological Analysis (IPA)
… via different wireless protocols such as Wi-Fi, 3G, 4G that can operate interactively allowing users to both find and share information. In this research study five participants in the final year of primary school shared their experiences through semi-structured interviews. Transcripts from the …
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Application of base station with array of intelligent antennas in the energy distribution sector
… because this solution is more reliable than 3G/4G and cheaper than fiber optics. In this context, it is of utmost importance to have a more efficient Base Transceiver Station (BTS) that can cover the communication of a larger area. In this work, the mathematical concepts of an intelligent …
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Security and Performance Issues in Spectrum Sharing between Disparate Wireless Networks
… preserving incumbent privacy. Recently, the 3GPP Rel.13 has specified a new standard to provide wide-area connectivity for IoT, termed as Narrowband IoT (NB-IoT). NB-IoT achieves excellent coexistence with legacy mobile standards, and can be deployed in any of the 2G/3G/4G spectrum (450 MHz …
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Uma análise de uma arquitetura de seleção de redes
… do sinal e prioriza redes WLAN em relação a 3G/4G. Outras pesquisas consideram a necessidade de economia de recursos computacionais do lado do dispositivo sem fio e propõem arquiteturas de classificação do tipo cliente-servidor. Neste trabalho é implementada e avaliada uma arquitetura de …
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Achieving Quality of Service in Group Scheduling in Cellular Networks
Cellular 3G/4G networks provide a wonderfully rich set of applications and social networking capabilities. From a QoS perspective, the traffic is basically divided into Real time and Non real time traffic which helps in scheduling priorities to the packets. With increase in need for QoS in the …
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Performance analysis and application development of hybrid WiMAX-WiFi IP video surveillance systems
… shift towards wireless solutions (WiMAX, Wi-Fi, 3G, 4G) to complement and in some cases replace the wired system. A wireless solution of the Fourth-Generation Surveillance System (4GSS) has been proposed in this thesis. It is a hybrid WiMAX-WiFi video surveillance system. The performance analysis …
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A Linear RF Power Amplifier with High Efficiency for Wireless Handsets
… thus able to operate in multiple modes (2G/2.5G/3G/4G). The design techniques provide contributions to current research in handset power amplifiers, especially to the converged power amplifier architecture, to reduce the number of power amplifiers within the handset while covering all standards …
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Síntese, caracterização, atividades fungicida e aceleradora da vulcanização da borracha nitrílica de organometálicos de estanho(IV) com ditiocarbimatos
… 4-BrC6H4 (3d), 4-IC6H4 (3e), CH3 (3f), C2H5(3g) e C4H9 (3h); [Fe(phen)3][Sn(Bu)2(RSO2N=CS2)2], fenantrolina)ferro(II), R = CH3 (4f), [Fe(phen)3 C2H5 (4g) = cátion e C4H9 tris(1,10- (4h)]; (Ph4P)[Sn(C6H11)3(RSO2N=CS2)], [R = C6H5 (5a), 4-FC6H4 (5b), 4-ClC6H4 (5c), 4- BrC6H4 (5d), 4-IC6H4 (5e), …
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Cooperative relaying in cellular networks for improving receiver diversity and cell radius
… and soon became the significant research area in 3G/4G cellular networks. The cooperative terminals (relays) exploit a larger form of space diversity to relay signals to destinations when placed in between source and destination to combat the effects of fading induced by multipath signal …
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Provision of broadband Internet in Oman by joining LTE-A with TV white space (TVWS)
… wireless networks such as fibre optic networks, 3G, 4G/LTE and WiMAX. These telecommunication services have covered major cities and towns in the country, but due to the vast and inhospitable terrains of Oman with its geographical, demographical and social factors, it has been very problematic to …
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Data Collection, Dissemination, and Security in Vehicular Ad Hoc Network
… limited bandwidth and insufficient coverage of 3G/4G networks, direct peer-to-peer communication between nodes is important.</p><p>Other major concerns in a VANET are security and privacy, since a malicious user can track vehicles, report false alarms, create undesirable traffic congestion, and …
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Efficient access network selection and data demand prediction for 5G systems
… access technologies (RATs) of various kinds (2G, 3G, 4G, 5G and Wi-Fi) would have to co-exist and aim to bridge the gap between the supply and demand for data. Subscribers, equipped with multi-mode or multi homing mobile terminals, can connect to one or more RATs to receive the required services. …
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An Innovative RAN Architecture for Emerging Heterogeneous Networks: "The Road to the 5G Era"
… in extreme cases can cause the Third-Generation (3G) or 4G (long-term evolution (LTE) and LTE-Advanced (LTE-A)) cellular networks to crash. </p> <p>As the conventional approaches of improving the spectral efficiency and/or allocation additional spectrum are fast approaching their theoretical …
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Adaptive Asymmetric Slot Allocation for Heterogeneous Traffic in WCDMA/TDD Systems
Even if 3rd and 4th generation wireless systems aim to achieve multimedia services at high speed, it is rather difficult to have full-fledged multimedia services due to insufficient capacity of the systems. There are many technical challenges placed on us in order to realize the real multimedia …