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 91 for “"Mobile communications"”.
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Novel receiver architectures for mobile communications
In digital communications, especially for mobile communications, the channel response needs to be estimated to maintain good system performance. However, the channel characteristics are usually unknown and time varying. In this thesis, novel receiver architectures and adaptive algorithms are …
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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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Paging industry in Japanese mobile communications market
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1996.
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Blind adaptive antenna arrays for mobile communications
… potential for increasing the capacity of mobile communications, by reducing co-channel interference, multipath, and noise. Blind adaptive algorithms, that is, algorithms which do not require a training sequence, are investigated and compared in this study. These algorithms are tested for …
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Compensation of nonlinear distortion in RF amplifiers for mobile communications
… of nonlinear distortion of power amplifiers in mobile communications is an important requirement for improving power consumption performance while maintaining efficiency, since mobile phone became an essential accessory for everyone nowadays. This problem demands a good power amplifier model, in …
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An architecture for mobile communications in hazardous situations and physical disasters
… mass transportation networks, sophisticated communications networks, and many more to cover all possible needs from a home user to an enterprise company. Unfortunately, the infrastructure has been proven unstable due to rapid environmental changes. The sophisticated networks, as well as the …
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Control of an indoor autonomous mobile communications relay via antenna diversity
… aerial vehicle (UAV) to serve as an autonomous communications relay in indoor or GPS-denied environments. The goal of the algorithm is to maximize the throughput of the end-to-end communications channel. An extremum-seeking controller steers the quadrotor while collision avoidance is provided by …
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A systems perspective of the operational management of a mobile communications platform
Includes abstract. Includes bibliographical references (leaves 78-82).
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The impact of mobile communications infrastructure investment on economic growth in South Africa
Mobile telecommunications networks provide the ability to access the internet and use telephony services, where the infrastructure exists. Because of its mobile nature a customer can always connect to the internet, even when not in the comfort of their home, unlike the case with fixed-line …
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Vigilis: Leveraging Language Models for Fraud Detection in Mobile Communications and Financial Transactions
Although advances in security have strengthened defenses in digital financial systems, attackers increasingly rely on social engineering to achieve their goals. These attacks are difficult to detect and prevent with existing security measures. To address this, we propose Vigilis, a fraud-protected …
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Securing against fraud in mobile communications : system design and development in 3G mobile networks
… consistency, integrity, and reliability of telecommunications systems. Authorized network access prevents fraudulent communications and maintains the availability of the systems. However, limited development time, cost reduction pressure and requirement for high reliability in software …
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Adaptive and Robust Multi-Gigabit Techniques Based MmWave Massive MU-MIMO Beamforming For 5G Wireless and Mobile Communications Systems. A Road Map for Simple and Robust Beamforming Scheme and Algorithms Based Wideband MmWave Massive MU-MIMO for 5G Wireless and Mobile Communications Systems
Over recent years, the research and studies have focused on innovative solutions in various aspects and phases related to the high demands on data rate and energy for fifth-generation and beyond (B5G). This thesis aims to improve the energy efficiency, error rates, low-resolution ADCs/DACs, antenna …
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Fuzzy technology application for mobile positioning in cellular communication
… automatic control systems including automobile transmission, subway systems, industrial robots, washing machines, cameras and air-conditioners. In contrast, the utilization of fuzzy logic in mobile communications systems is recent and limited. Understanding general mobile communications …
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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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Practical multiuser detection algorithms for CDMA
… practical multiuser demodulation algorithms for mobile communications systems that are based on code division multiple access (CDMA) technologies. These include the adaptive receiver and the interference canceller. The overall complexity of implementing them is examined. The effects of the …
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Co-channel interference cancellation in mobile cellular communication systems
In recent years, mobile communications has become very popular and the demand for its services has increased dramatically. The capacity of mobile communication systems is mainly limited by co-channel interference caused by frequency reuse. The acceptable co-channel interference at the receiver …
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Gallium nitride class-F power amplifier for UMTSWCDMA applications
The 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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IMPROMPTU : audio applications for mobile IP
… Internet Protocol (IP) based audio platform for mobile communications and networked audio applications. IMPROMPTU supports multiple audio applications on a mobile device communicating over the IP network. The audio user interface on the IMPROMPTU client provides speech interfaces to switch …
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Clique here : exploring the use of mobile multi-media to support connectedness
… people they care about. To cope, people turn to communications technology like the telephone, e-mail, and instant messaging (IM) to maintain a connection with social contacts. These communication modalities are limited in their ability to provide social-connectedness by their failure to balance …
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