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 10 of 10 for “"Universal Mobile Telecommunications System (UMTS)"”.
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Mobile Wireless System Interworking with 3G and Packet Aggregation for Wireless LAN
… data within a wireless local area network (WLAN) system. A simulation model was developed to study the performance of our protocol, AGG-MAC (aggregated medium access control). AGG-MAC is a simple and elegant medium access control (MAC) protocol designed to improve performance by transmitting a …
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SOME MULTIBAND COMPACT AND COST EFFECTIVE ANTENNAS FOR MOBILE COMMUNICATION APPLICATIONS
In the last few years, the field of telecommunications and especially the one of mobile telephony has evolved rapidly. Cell phones have evolved immensely both in design and function. Due to the development of modern integrated circuit technology, personal communication handsets are shrinking in …
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Implementation of Wideband Multicarrier and Embedded GSM
The Global System for Mobile (GSM) cellular standard, having been in existence for over two decades, is the most widely deployed wireless technology in the world. While third generation networks and beyond, such as Universal Mobile Telecommunications System (UMTS) and Long Term Evolution (LTE), are …
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Gallium nitride class-F power amplifier for UMTSWCDMA applications
… importance of wireless communications in today's telecommunications industry is indubitable. Wireless technologies are used in almost every aspect of our everyday life. Universal Mobile Telecommunications System (UMTS) technology has already implemented 3G communication standard for mobile …
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On the Capacity Modelling in 3G Mobile Wireless Communications Systems
… behind the introduction of the present 3G mobile communication systems such as the wideband CDMA (WCDMA). However, the rapid increase in the number of connections and demand for high-speed multimedia communication services supported is contradicting with the limited resources allocated by …
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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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Quality of service optimization of multimedia traffic in mobile networks
Mobile communication systems have continued to evolve beyond the currently deployed Third Generation (3G) systems with the main goal of providing higher capacity. Systems beyond 3G are expected to cater for a wide variety of services such as speech, data, image transmission, video, as well as …
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Fast blind adaptive equalisation for multiuser CDMA systems
… over a dispersive channel in a CDMA system, we have to re-establish the orthogonally of codes which are used when combining input signals from many users onto a single communication path, as otherwise the performance of such system is limited significantly by inter-symbol interference …
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Traffic Dimensioning for Multimedia Wireless Networks
… resource allocation, and rollout plan for system deployment. Additionally, any practical optimization strategy has to rely on accurate estimates of expected demand and growth in demand. In this research, we propose a practical framework to characterize the traffic offered to multimedia …
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Σχεδιασμός και ανάλυση μηχανισμών για μετάδοση δεδομένων πραγματικού χρόνου σε κινητά δίκτυα επικοινωνιών
… η χρήση των κινητών δικτύων τρίτης γενιάς – UMTS (Universal Mobile Telecommunications System) έχει αρχίσει να επεκτείνεται. Τα νέα αυτά κινητά δίκτυα αντικαθιστούν τα υπάρχοντα κινητά δίκτυα δεύτερης γενιάς και επιπλέον προσφέρουν προηγμένες υπηρεσίες στους κινητούς χρήστες. Στην …