Electronic & Electrical Eng (Theses and Dissertations): Recent submissions
Now showing items 41-60 of 140
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Designing for the Future: A Complex Systems Approach to Communication Networks
(Trinity College Dublin. School of Engineering. Discipline of Electronic & Elect. Engineering, 2020)The network size and the deployment density of wireless networks continue to increase from year to year. Additionally, networks are experiencing an operational shift that affects both: (1) the network architecture, and (2) ... -
Micro-raman investigation of si, ge and carbon related nanostructures
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2010)The degradation in performance of silicon devices with scaling caused by fundamental silicon material limitations by the year of 2020 is forcing the semiconductor industry to consider extraordinary materials to replace ... -
Accurate modelling and synthesis of the Lead 11 ECG signal
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2012)This thesis is a study of Lead II ECG signal synthesis. The principal problem of EGG signal synthesis is two fold, the first concerns the accuracy of the instrument used to deliver the synthesised signal and the second ... -
Real-time out-of-band interference reduction for OFDM-based systems
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2012)Interference reduction for OFDM-based systems is of increasing interest in new technologies such as dynamic spectrum access networks. In the past decade, many approaches have been proposed for reducing the interference of ... -
Deconstructing and reconstructing Medium Access Control : the anatomy of a Cognitive Radio MAC
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2012)This thesis focuses on Medium Access Control (MAC) for Cognitive Radio (CR). What is meant by the term can however be unclear. What CR MACs have been shown to do in the literature does not follow any one clear definition, ... -
Investigating the temporal dynamics of auditory processing and selective attention using continous and ecologically valid stimuli : a neural engineering approach
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2011)Auditory Evoked Potentials (AEPs) are a measure of the neural activity in response to auditory stimulation and are used in many clinical and research applications. They are obtained from the electroencephalogram (EEG) by ... -
Perception of true linear self-motion using vestibular stimulation in humans : a mathametical electrophysiological analysis
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2013)In humans, the percept of motion is a combination ol multiple sensors modalities, primarily involving vestibular, visual and somatosensory (Ohmi, 1996). The ability to properly perceive motion enables us to function normally ... -
Experimental investigations on biaxial nematic and orthogonal biaxial smectic liquid crystals
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2011)The quest for thermotropic biaxial nematic phase began forty years ago, when it was recognised that the molecules forming liquid crystal phases deviate from their presumed cylindrical shape. In recent years, the interest ... -
A generalized method for quantification of cognitive radio benefits within wireless systems
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2009)For most of the history of wireless communications, the primary enabler of enhanced radio communications capability and utility has been continual improvement in the implementing technology and the corresponding ability ... -
Large electroclinic effect and stability of chiral smectic liquid crystals
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2009)Large electroclinic effect in the smectic-A* phase and stability of smectic-C* variant phases are investigated in detail. Investigation of large electroclinic effect in the smectic-A* phase is one of the recent topics, and ... -
Enabling cognitive radio experimental research
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2011)Cognitive radio technology is a promising solution for addressing the increasing demand in reliability, connectivity, bandwidth, and quality of future wireless communication systems. This is achieved through continuously ... -
Classification and segmentation methods with application in audio and acoustic signal processing
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2011)This thesis concerns the exploration of novel interactive educational resources to enhance literacy and language learning. The core system that arises from this research is called "ReciTell", which is a rich media based ... -
Relationship between the molecular interaction and the structure of the bent core liquid crystals in the nematic phase
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2012)The relationship between the molecular interaction and the molecular structure of the bent core mesogens in the nematic phase is investigated in detail. Various physical phenomena are observed and interpreted. -
Multiuser communications for next generation wireless networks
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2015)Orthogonal frequency division multiplexing (OFDM) has been the technology of choice for years in wired and wireless systems. However, it has some drawbacks that limit its use in the fifth generation of wireless communication ... -
Application of matrix methods for investigation of silicon based layered structures
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2012)This work is dedicated to the theoretical and experimental investigation of the influence of nano- and microstructuring of silicon systems on their linear optical response. The wavelengths of the light are comparable to ... -
Front-end analogue filter design for diagnostic electrocardiographic equipment
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2013)This thesis addresses the design of an analogue front-end filter for portable electrocardiographic equipment. The task of the filter is to eliminate as much out-of-band noise and interference as possible before the ... -
A semiclassical approach to quantum Brownian motion in Wigner's phase space
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2010)In this thesis, the recent semiclassical approach to quantum Brownian motion of Coffey et al. [Phys. Chem. Chem. Phys. 9, 3361 (2007)] is studied in detail. This approach is based on a semiclassical extension of Wigner's ... -
Mathematical processing of in-vivo electrophysiological data with applications to implanted electrode recordings
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2012)Neurons are the principal cellular elements that underlie the function of the nervous system, which includes the brain, spinal cord, and peripheral ganglia. These electrically excitable cells process and transmit information ... -
Design, fabrication and optical characterization of one-dimensional two- and multi-component photonic crystals based on silicon
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2012)The objective of this thesis was the design, fabrication and optical investigation of a novel type of one-dimensional photonic crystal structures for application in integrated Silicon microphotonics. This thesis reports ... -
Temporal discrimination thresholds as an endophenotype in adult-onset primary torsion dystonia
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2012)Adult onset primary torsion dystonia (AOPTD) is the most common form of dystonia and is an autosomal dominant disorder with markedly reduced penetrance. Most AOPTD patients therefore present as "sporadic" cases. Disordered ...
