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 8 of 8 for “"Global System for Mobile Communications (GSM)"”.
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Simulation of Third Generation CDMA Systems
The goal for the next generation of mobile communications system is to seamlessly integrate a wide variety of communication services such as high speed data, video and multimedia traffic as well as voice signals. The technology needed to tackle the challenges to make these services available is …
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A lossy, dictionary -based method for short message service (SMS) text compression
… do not bring about a massive reduction in size for short messages. The Global System for Mobile communications (GSM) specification suggests that untrained Huffman encoding is the only required compression scheme for SMS messaging, yet support for SMS compression is still not widely available on …
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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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Advanced handover procedure for cellular communication systems
Third Generation cellular communication systems are expected to support mixed cell architecture in which picocells, microcells and macrocells are used to achieve full coverage and increase the spectral capacity. Supporting higher numbers of mobile terminals and the use of smaller cells will result …
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Integration of Open-Source Networks
Global System for Mobile Communications (GSM) networks are receiving increasing attention in the open-source community. Open-source software allows for deployment of a mobile cellular network with lower costs, more customization, and scalable control. Two popular projects have emerged that offer …
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The MeerKAT Radio Frequency Interference Environment
… While there are few dedicated RFI monitoring systems on the MeerKAT site, the most sensitive RFI detector is the MeerKAT array itself. In this thesis we use approximately 1500 hours of MeerKAT observations to create a multi-dimensional view of the RFI at the MeerKAT site. Here we investigate a …
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Impact on Forensic Voice Comparison of Speech Acquired from the GSM Mobile Phone Network
This thesis investigates the impact of the Global System for Mobile Communications (GSM) network on forensic voice comparison (FVC). Forensic scientists have in the past often used intercepted speech recorded from the landline telephone network for evaluating the strength of evidence between …
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Modelling and design of compact wideband and ultra-wideband antennas for wireless communications. Simulation and measurement of planer inverted F antennas (PIFAs) for contemporary mobile terminal applications, and investigations of frequency range and radiation performance of UWB antennas with design optimisation using parametric studies.
The rapidly growing demand for UWB as high data rates wireless communications technology, since the Federal Communications Commission (FCC) allocated the bandwidth of UWB from 3.1GHz to 10.6 GHz. Antenna also plays an essential role in UWB system. However, there are some difficulties in designing …