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 132 for “"GSM"”.
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Sicherheitsanalyse der GSM Luftschnittstelle
… über das globale Mobilfunk-Kommunikationssystem (GSM) statt. Vertrauliche Nachrichten, beispielsweise Transaktionsnummern (TANs) von Banken vertrauen auf die Sicherheit von GSM. Diese Sicherheit basiert hauptsächlich auf einem Verschlüsselungsalgorithmus, der bereits gebrochen ist, jedoch noch …
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GSM based Communication-Sensor (CommSense) System
… to use Global System for Mobile Communication (GSM) as the parent system for the prototype development, we decide to update the name to GSM based Communication-Sensing (GSM-CommSense) system. This thesis begins with theoretical analysis of the feasibility of the GSM-CommSense system. First of …
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The Bayesian Global Sky Model (B-GSM)
… radio sky, the Bayesian Global Sky Model (B-GSM). The novel Bayesian framework of B-GSM aims to address the limitations of previous sky models, notably the Global Sky Model (GSM), by introducing robust error quantification and calibration into the model. We use nested sampling to compute …
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A multiprocessor implementation for the GSM algorithm
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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Channel coding for enhanced full rate GSM
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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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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GPS lokace s GSM prenosem pozice a teploty
… modulovitého zařízení pro GPS lokace a teploty s GSM přenosem, která slouží pro určení polohy objektu na vyžádání uživatele za pomocí SMS zprávy. Je určeno pro hlídaní vozidel a především lokace již odcizeného vozidla. Součástí práce je návrh hlavního modulu, modulu GPS lokace, modulu zdroje a …
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Improving performance of a GSM-based speech recognizer
[page 73 missing] Communication between human beings is important and the most effective way of passing information. Humans are also able to communicate with machines for instance, computers, where keyboards and typing are the means of communication. Most people can speak but not everyone can read …
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Learning significant user locations with GPS and GSM
… to a user - by analyzing GPS location and GSM cell tower data collected from the user's mobile phone. Location provides valuable context into the user's environment, and place-discovery and recognition algorithms enable human-centric systems to communicate with the user in human terms. In …
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Parallelizing the GSM speech compression algorithm on Raw
The GSM speech encoding algorithm, a widely used compression algorithm in mobile communications, was parallelized on Raw, a highly distributed hardware architecture with low latency communication. Parallelization architectures designed included a 2-stage pipeline and a 5-node satellite-hub model …
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Single antenna interference cancellation in asynchronous GSM/GPRS networks
… cancellation algorithm for the asynchronous GSM/GPRS network. The algorithm is tested according to the current SAIC/DARP performance requirement in the computer simulation, and is shown to give various gains in different test scenarios.
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Supplanting copper : pricing and quality of GSM telecom services in Africa
Introduction: The mobile phone is one of the greatest innovations of the 2 0 th century. It allows a user to communicate information - data and voice - regardless of their geographical location. Its importance has grown tremendously, as people adopt it for use in personal/business uses, disaster …
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Efficiency improvements to the Groupe Special Mobile (GSM) digital mobile radio system
Groupe Spécial Mobile (GSM) has been developed as the pan-European second generation of digital mobile systems. GSM operates in the 900 MHz frequency band and employs digital technology instead of the analogue technology of its predecessors. Digital technology enables the GSM system to operate in …
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Impact on Forensic Voice Comparison of Speech Acquired from the GSM Mobile Phone Network
… 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 suspect and offender speech data. …
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The detection and tracking of portable GSM handset using a 5-element circular array
… of arrival with some degree of certainty. GSM, the Global System for Mobile Communications is a mobile digital communications system which has rapidly gained acceptance on a global scale since the early 1990s. Because the communications standard is made use of throughout the world today, it …
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Nouvelle technique d'analyse acoustique pour la reconnaissance vocale dans les transmissions GSM bruitées
… dans le cadre des télécommunications mobiles GSM. L'ajout des formants est effectué grâce à un paradigme utilisant des frames multi-variables. Cependant, l'utilisation d'une analyse multi-variable pose un problème l'assignation des poids de chaque source d'information (variable). Nous avons …
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Sniffing, Decoding and Decryption of GSM Signals Using low cost hardware and Open-source software
… the most common ciphering algorithm used in GSM. Given 114-bit of known plaintext, we are able to recover the session key with a hit rate of 19%. The tables are expected to be unique as they provide the best coverage yet known to the authors and research workers and they are the first step in …
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Electromagnetic radiation level detection and monitoring system for triple band GSM signal using calculable antenna factor method
The project is about monitoring electromagnetic (EM) radiation level for mobile frequency range where the system is capable of detecting the level of electromagnetic radiation (in volts/meter) by the receiver antenna (sensors) at the frequencies of 0.9 GHz, 1.8 GHz and 2.1 GHz. The system then …
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