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 53 for “"Mobile communication systems"”.
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Handover in digital cellular mobile communication systems
… systematic tracking of the random movement of a mobile station in a cellular environment. It incorporates mobility parameters under generalized conditions, so that the model could be tailored to be applicable in most cellular environments. This model is then used to characterisendifferent …
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Time varying channel models for 5G mobile communication systems
… looking for ways of continuing the evolution of mobile communication technology to its fifth generation (5G). Providing high data rate information transfer to highly mobile users over time varying communication channels remains a shared obstacle. In this thesis, we contribute to these global …
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Bit error rate simulation enhancement and outage prediction in mobile communication systems
… made to software designed for simulating digital mobile radio communication systems. Internally generated two-ray Rayleigh fading channel models as well as imported spatially varying complex channel impulse responses can be utilized in simulations. Implementation of receiver timing jitter and …
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Space-partitioning with cascade-connected ANN structures for positioning in mobile communication systems
… computing has become an important bit of telecommunication services and industry. For this reason, the research efforts on new and improved localisation algorithms are constantly being performed. Thus far, the satellite positioning systems have achieved highest popularity and penetration …
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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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Neural cross-correlation for radio astronomy
… are essential elements of most signal processing systems. Areas of applicability include image processing, speech synthesis and analysis, high energy physics, wireless and mobile communication systems, spread spectrum communication systems and even prosthetics. Finding cost effective and …
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Signal conditioning for high efficiency : wireless transmission
Fourth generation (4G) mobile communication systems will need wider band-width channels and improved spectrum efficiency to achieve the specified LTE-advanced 100Mbps (mobile) and 1Gbps (fixed) wireless transmission target rate. The next generation of wireless basestations will also need to be …
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On the performance and capacity of space-time block coded multicarrier CDMA communication systems
Future wireless mobile systems are required to transport multimedia traffics at much higher bit rates and this motivates the author to work on the suitable candidate technology, space-time block coded (STBC) multicarrier (MC-) CDMA, for next generation of wireless mobile communication systems. The …
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CMOS Transceiver Front-Ends in Mobile Communication Handsets - Architectures and Building Blocks
For mobile communication systems in the low-GHz range, CMOS has increasingly become the technology of choice, and the level of integration in mobile handsets has risen. The use of off-chip components, which increases the handset assembly time and costs, is preferably avoided. However, integrating a …
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Photonic RF signal processors
… be a key technology to implement next-generation mobile communication systems and future optical networks. Research activities include design and modelling of novel photonic architectures for processing and filtering of RF, microwave and millimeter wave signals of the above mentioned applications. …
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Solutions for Dynamic Channel Assignment and Synchronization Problem for Distributed Wireless Multimedia System
The recent advances in mobile computing and distributed multimedia systems allow mobile hosts (clients) to access wireless multimedia Data at anywhere and at anytime. In accessing multimedia information on the distributed multimedia servers from wireless personal communication service systems, a …
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Capacity Improvement Using Adaptive Sectorisation in WCDMA Cellular Systems With Non-Uniform and Packet Mode Traffic
CDMA cellular mobile systems find widespread acceptance particularly in regional centres where there are large geographical areas to cover. However, temporal changes of user density due to formation of congregated population centres (called hot spots) can seriously undermine the system design goals …
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Knowledge Distillation in DMRS CHEST ML to Optimize Radio Performance and Hardware Efficiency
… connections, and strict latency requirements in mobile communication systems have created high demands on the radio access network (RAN), especially at the physical layer. In 5G New Radio (NR) systems, good channel estimation is crucial for demodulating uplink signals like those sent over the …
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A novel beam management strategy using UE trajectory mapping
… aimed at optimizing performance in multi-user mobile communication systems, specifically within the framework of 5G mmWave networks. As the demand for reliable and high-speed data transmission increases, traditional beamforming techniques face challenges such as high computational load and …
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Dynamic wireless mobile framework for distributed collaborative real-time information generation and control systems
Intelligent Transportation Systems (ITS) have only recently discovered the exciting possibilities in the nomadic and ubiquitous computing space to build a new generation of information systems by allowing the vehicle to act both as a carrier and consumer of wireless (and thus omnipresent) …
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Resource Management with Smart Antenna in CDMA Systems
Third generation (3G) mobile communication systems will provide services supporting high-speed data network and multimedia applications in addition to voice applications. The Smart antenna technique is one of the leading technologies that helps to meet the requirement by such services to radio …
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Design of mobile radio communication system at millimetre-waves and BER measurements for indoor environments
… to estimate the system performance in indoor mobile channels is necessary for future system design and applications.<br/><br/>The studies reported in this thesis are concerned with the design of a digitally modulated broadband system at 60 GHz and the estimation of Bit Error Rate (BER) …
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Quality of service optimization of multimedia traffic in mobile networks
Mobile communication systems have continued to evolve beyond the currently deployed Third Generation (3G) systems with the main goal of providing higher capacity. Systems beyond 3G are expected to cater for a wide variety of services such as speech, data, image transmission, video, as well as …
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Analog and Digital Co-design Methods for Future Wireless Transmitters
… spectral purity sets high standards for future mobile communication systems. Future wireless communication transmitters are challenged to improve their performance with reduced power consumption. Work performed in this thesis aims at improving several key areas of a wireless transmitter …
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