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 28 for “"Mobile terminals"”.
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Transmission of image data over digital networks involving mobile terminals
… transmission over digital networks involving mobile terminals. An important class of data required for transmission over mobile terminals is image information such as street maps, floor plans and identikit images. This sort of transmission is of particular interest to the service industries …
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Mobile multimedia service provisioning with collective terminals in broadband satellite networks. An approach for systematic satellite communication system design for service provisioning to collective mobile terminals including: mobile satellite channel modelling, antenna pointing, hierarchical multi-service dimensioning and aeronautical system dimensioning.
… services via satellites for collectively mobile user groups in a heterogeneous network with several radio access technologies. The extended use of personalised user equipment beyond the coverage of one single terrestrial network by means of a satellite transport link, represents an …
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Cell association attack via reference signal spoofing in multi-cell wireless networks
… wherein malicious base stations (MBSs) mislead mobile terminals (MTs) into being prematurely handed over to suboptimal target cells, resulting in radio link failure (RLF). The MBSs achieve this by spoofing the common reference signals of legitimate base stations (LBSs), which are used by MTs to …
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Satellite multiple access protocols for land mobile terminals. A study of the multiple access environment for land mobile satellite terminals, including the design analysis and simulation of a suitable protocol and the evaluation of its performance in a U.K. system.
… of multiple access schemes for satellite land mobile systems that provide a domestic or regional service to a large number of small terminals. Three orbit options are studied, namely the geostationary, elliptical (Molniya) and inclined circular orbits. These are investigated for various mobile …
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Medium access control design for all-IP and ad hoc wireless network
… controls the access of wireless medium by mobile terminals, in order to achieve its fair and efficient sharing. It plays an important role in resource management and QoS support for applications. All-IP wireless WAN is fully IP protocol-based and it is a strong candidate beyond 3G (Third …
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Analog parallel processor solutions for video encoding
… low-power video encoders within 3rd generation mobile terminals. The video codecs of such mobile terminals are defined by either the MPEG-4/H.263 or H.264 video standard. All of these standards are based on the block-based hybrid approach. As block-based motion estimation (ME) is responsible for …
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Multi-layer traffic engineering framework for inter-working multi-hop wireless networks
… can be achieved through multi-technology mobile terminals (nodes), which enables network users to access any available network. In addition, such nodes extend network coverage by relaying traffic for each other. However, to exploit the benefits of the internetworking, it is desirable to …
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Handover Performance in the Mobile WiMAX Netrworks
Mobile terminals allow users to access service while on the move. This unique feature has driven the rapid growth in the mobile network industry, changing it from a new technology into a massive industry in less than two decades. In this thesis, an in-depth study of the handover effects of mobile …
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Transmit Diversity and its Application to Cooperative Networking
… actually deliver good results. Moreover, most mobile terminals are currently equipped with only one antenna. In view of this limitation, we study the recently proposed user cooperation techniques for exploiting spatial diversity with user power constraints for a simple three terminal network. …
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Examining the role of trust in shaping customer satisfaction of mobile banking
Mobile banking is the latest technology offered by service providers that allows customers to conduct banking transactions via mobile terminals. Mobile banking like other online transactions involve great uncertainty and risk, thus, customers need to build trust to alleviate perceived risk and …
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Connection Robustness for Wireless Moving Networks Using Transport Layer Multi-homing
… transport-layer connections in a heterogeneous mobile environment. This is particularly true in the case of mobile networks with multiple vertical handovers. In this thesis, issues and challenges in mobility management for mobile terminals in such a scenario are addressed, and a number of …
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2GHz W-CDMA Radio Transceiver
… at 2GHz. The radio is an RF front-end for mobile terminals. The radio provides the functions of modulation and demodulation to enable transmitting and receiving digital information through the air link. The radio comprises one transmitter in conjunction with transmit power control (TPC), …
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Mobile-Payments in the U.S. and China
Mobile payment is a non-cash payment method that uses mobile terminals as a medium. The United States, the world’s most financially advanced country, has lagged far behind China in mobile payment innovation. The reasons for this phenomenon have not been well explained in past studies. This thesis …
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Design and Simulation of a Two-Dimensional Beam Steered Millimeter-Wave Phased Array Antenna at W-Band (75 – 110 GHz, respectively 4 – 2.7 m)
… throughputs, reduced interference, and smaller mobile terminals. Furthermore, recent developments in wireless technologies and procedures have allowed for such systems to be brought to market. However, atmospheric losses are a significant barrier when working with millimeter waves. High-gain …
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Cooperative DVB-H: Raptor-Network Coding Protocols for Reliable and Energy Efficient Multimedia Communications
… and energy-efficient delivery of multimedia to mobile terminals in dynamic networks is a very challenging problem. In this thesis, we focus on a cooperative extension to the Digital Video Broadcasting – Handheld (DVB-H) standard, forming a cooperative broadcast network whereby …
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Advanced handover procedure for cellular communication systems
… spectral capacity. Supporting higher numbers of mobile terminals and the use of smaller cells will result in an increase in the number of handovers, and consequently an increase in the time delays required to perform these handovers. Higher time delays will generate call interruptions and forced …
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Relay Diversity Techniques for OFDM and MC-CDMA
The future of mobile and personal communications requires a system<br/>that can support a large number of users and has the ability to provide<br/>high-speed services. Meeting this demand is challenging since wireless<br/>communications are subject to these four major constraints: …
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Smart Antennas & Power Management in Wireless Networks
… that it is feasible to use it on small mobile terminals like handheld PDA, LAPTOP and other mobile devices with limited battery power. The simulation results of various ad-hoc network scenario shows that there are significant gains to be had if these technologies can be integrated in the …
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Efficient access network selection and data demand prediction for 5G systems
The massive proliferation of sophisticated mobile terminals with advanced capabilities have led to an enormous surge in the demand for mobile broadband data. Also, the recent popularity of bandwidth intensive applications such as Netflix and YouTube has contributed to this demand for the wireless …
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Investigation and design of 5G antennas for future smartphone applications
… to employ a larger number of elements for 5G mobile terminals. Placing multiple antennas in the limited space of a smartphone PCB poses a significant challenge. Therefore, a new design technique using dual-polarized antenna resonators for 8×8 MIMO configuration is proposed for sub 6 GHz 5G …
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