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 69 for “"Communication services"”.
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Developing distributed contextualized communication services
… an entirely new set of distributed user-centric services. An example of a distributed service would be a cell phone that learns more about social communication patterns by communicating with an email client application. This thesis demonstrates how we could develop such a system. I built a …
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Enhanced communication services for many-to-many multicasting using XTP
… but no guarantees. One-to-many and many-to-many services will become more important in the future. Reliable multicast transports add delivery guarantees, not necessarily like those of reliable unicast TCP, to the group-delivery model of multicast. To meet this growing demand for reliable …
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Low Power Merged LNA and Mixer Design for Medical Implant Communication Services
… of 402-405 MHz for MICS (Medical Implant Communication Services) applications in 1999. The regulations for MICS band apply to devices that support the diagnostic and/or therapeutic functions associated with implanted medical electronics. The implanted devices aid organs and control body …
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Design and Implementation of a Pilot Signal Scanning Receiver for CDMA Personal Communication Services Systems
In cellular and personal communications services (PCS) systems based on code division multiple access (CDMA), a pilot signal is used on the forward link for synchronization, coherent detection, soft handoff, maintaining orthogonality between base stations, and, in the future, position location. It …
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Delivering personalised advertising in IMS-based IPTV through direct marketing
Multimedia applications and communication services are offered to users free of charge over the open Internet. However, since the Internet is a best effort network, these services are not associated with any Quality of Service (QoS) and Quality of Experience (QoE) guarantees. Furthermore, security …
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New Horizon in Mobile Communications Networks Planning
The new horizon in mobile communication network planning is a developed study on mobile communication services in developed and developing countries. The aim of the study is to introduce a method to predict the best country for investment in mobile communication services and industry on which the …
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Enabling Configurable, Extensible, and Modular Network Stacks
… stack which integrates desired protocols, services, and APIs. This thesis will describe two systems, Bertha and Congestion Control Plane (CCP), which incorporate new abstractions to navigate this new setting from the perspective of congestion control algorithm and the application’s network …
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A communication platform for distributed PC/mainframe applications within a 3270 environment
Remote personal computer communication with IBM mainframes is often confined to low throughput (less than 19,200 baud), asynchronous serial lines managed by the mainframe through 3270 protocol converters. The capabilities of the personal computer are under utilized and limited to terminal emulation …
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Understanding platform business models in the telecommunication industry
Telecommunication (telecom) companies face increasingly tough times as digitization reshapes the industrial landscape. In 2012, telecom companies acknowledged that over-the-top (OTT) communication services have become the greatest threat to their revenues. OTT communication services use the …
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Telecommunications services for multimedia data exchange support
… format presents special challenges for communication networks. This thesis is an attempt to understand the impact of multimedia computing as it relates to the transmission requirements to support large volume data exchange in a distributed computing environment. With a good understanding …
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Simulation of VSELP speech encoder for mobile channels
… there has been an incredible demand for personal communication services. To meet this demand various technologies have been developed. The U. S. digital cellular standard uses the 8 kbps VSELP speech coder to accommodate more users in the same bandwidth. This standard is currently being introduced …
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Algorithms for channel impairment mitigation in broadband wireless communications
Broadband wireless communications has been well recognized as one of the most potential strategies to integrate various high-data-rate and quality communication applications such as high-speed wireless internet, broadcasting and mobile communication services under a common system infrastructure. To …
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Aspectos contábeis do ICMS Substituição tributária nas indústrias de cachaça na cidade de Guarabira na Paraíba
… related to the circulation of goods and on services of interstate, intermunicipal and communication services) in the Sugarcane liquor industry in Guarabirana Paraíba. It has been shown through examples how these companies work with the tax substitution in the sale of their products to final …
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Spectrum sharing in cognitive radio networks
Years of growth in wireless communication services and conservative spectrum allocation policies by government regulators have led to spectrum scarcity. On the other hand, spectrum measurement campaigns have indicated that the actual occupancy of most licensed frequency bands is quite low. In …
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Applying human-like intelligence to future generation network to improve communication efficiency
In recent decades, communications network has evolved at drastic speed to provide advanced and intelligent services. This strengthening service provision owes to the successful establishment of various intelligent networks and the use of artificial intelligence, pervasive computing, and social …
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Physical Layer Design for a Spread Spectrum Wireless LAN
… proposed to provide mobility for existing data communication services. This thesis presents a physical layer design for a direct sequence spread spectrum ISM band radio LAN system. This radio system employs spread spectrum communication technology and a differential binary phase shift …
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Atomic Broadcast in Heterogeneous Distributed Systems
<p>Communication services have long been recognized as possessing a dominant effect on both performance and robustness of distributed systems. Distributed applications rely on a multitude of protocols for the support of these services. Of crucial importance are multicast protocols. Reliable …
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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.
This work deals with provisioning of communication 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 …
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A flight software development and simulation framework for advanced space systems
… systems employ middleware software to provide communications abstractions and reduce software interface complexity. Embedded applications are adopting the same approaches, but must make provisions to ensure that hard real-time temporal performance can be maintained. This thesis presents the …
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Adaptive Antenna Arrays for Satellite Personal Communication Systems
… several proposals have come forth for personal communication services implemented by means of multiple satellite systems. These satellite systems are similar to current terrestrial cellular technologies, which are still relatively new and have numerous technical problems associated with them. As …
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