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Browsing Electronic & Computer Engineering by Title

Browsing Electronic & Computer Engineering by Title

Now showing items 1-20 of 391

A 100dB SFDR 0.5V pk-pk band-pass DAC implemented on a low voltage CMOS process

Mullane, Brendan; O'Brien, Vincent (Springer, 2012)

Direct Digital Synthesis (DDS) systems generate fine frequency resolution signals over a broad spectrum that are used in a wide variety of applications such as multi-mode RF, communications, measurements and test. A ...
1550 nm superluminescent diode and anti-stokes effect CCD camera based optical coherence tomography for full-field optical metrology

Kredzinski, Lukasz (University of Limerick, 2015)

Optical Coherence Tomography (OCT) is a well-established non-invasive imaging technology capable of carrying out 3D high-resolution cross-sectional images of the internal microstructure of examined material. However, ...
3P-AAA framework for UCWW.

Tairov, Dmitry (University of Limerick, 2011)

This thesis proposes a new approach to the management of the Authentication, Authorization and Accounting (AAA) function that forms a core part of many service provider networks. The principle idea outlined is to move this ...
40 Gb/s NRZ-DQPSK data wavelength conversion with amplitude regeneration using four-wave mixing in a quantum dash semiconductor optical amplifier

Connelly, Michael J.; Krzczanowicz, Lukasz; Morel, Pascal; Sharaiha, Ammar; Lelarge, Francois; Brenot, Romain; Joshi, Siddharth; Barbet, Sophie (2016)

Differential quadrature phase shift keying (DQPSK) modulation is attractive in high-speed optical communications because of its resistance to fiber nonlinearities and more efficient use of fiber bandwidth compared to ...
4pMU4. Novel computer aided design of labial flue pipes

Moss, Brian; Lewis, Elfed; Leen, Gabriel; Bremer, Kort; Niven, Andrew (Acoustical Society of America, 2010)

A labial flue pipe is a well known tone generator, which is familiar and easily recognisable as the organ pipes seen in many concert halls and churches. However, the design and understanding of the sounding mechanism of ...
Adaptive linearized methods for tracking a moving telemetry capsule

Arshak, Khalil; Adepoju, Francis (IEEE Computer Society, 2007)

In this paper, we discuss system and method of determining the real-time location of an omni-directional diagnostic radio frequency (RF) system while the object (transmitter) is moving freely inside an inaccessible organ. ...
Addressing synchrony issues of dynamic shared secrets in security protocols

Lasc, Ioana (University of Limerick, 2011)

This research addresses synchronisation issues in security protocols for wireless communications. A new class of attacks, termed Suppress-and-Desynchronise (SD) attacks, is introduced. This attack uses the vulnerabilities ...
Advances in quality and performance assessment for future wireless communication services

O'Droma, Máirtín; Rupp, Markus; Koucheryavy, Yevgeni; Kassler, Andreas (Hindawi Publishing Corporation, 2010)

no abstract available
Advances in security and privacy of multimodal interfaces

Damaševičius, Robertas; Woźniak, Marcin; Alarcon-Aquino, Vicente; Ganchev, Ivan (Graz University of Technology, Institut für Informationssysteme und Computer Medien (IICM), 2018)

With the rapid development and increasing complexity of communication systems and interfaces using multiple modalities of communication in human-computer systems such as speech, tactile, gestures, gaze, head and body ...
Advances in voice quality measurement in modern telecommunications

Mahdi, Abdulhussain E.; Picovici, Dorel (Elsevier, 2009)

Quality of service (QoS) is a measure of a communication network performance that reflects the transmission quality and service availability as perceived by the users. In the context of telecommunications, voice communication ...
All-optical AND gate with improved extinction ratio using signal induced nonlinearities in a bulk semiconductor optical amplifier

Guo, Li-Qiang; Connelly, Michael J. (Optical Society of America, 2006)

An all-optical AND gate based on optically induced nonlinear polarization rotation of a probe light in a bulk semiconductor optical amplifier is realized at a bit rate of 2.5Gbit/s. By operating the AND gate in an up and ...
Ambulatory wireless sensor network power management -- a model-based predictive control approach

Witheephanich, Kritchai (University of Limerick, 2011-12-16)

The characterisation of power control principles that underpin the performance dynamics of communication is an important feature in the user level in Ambulatory Wireless Sensor Networks. This thesis uses Model Predictive ...
Analysis of direct interconnection technique for offshore airborne wind energy systems under normal and fault conditions

Salari, Mahdi Ebrahimi; Coleman, Joseph; Toal, Daniel (Elsevier, 2019)

Direct interconnection is a novel technique for interconnecting offshore airborne wind energy (AWE) generators which facilitates the removal of power converters from the offshore generation site. In this technique, unlike ...
Analysis of feedback predictive encoder based ADCs

Scanlan, Tony; O'Hare, Daniel; Halton, Mark; O'Brien, Vincent; Mullane, Brendan; Thompson, Eric (Emerald Group Publishing Ltd,, 2017)

Purpose The purpose of this paper is to present analysis of the feedback predictive encoder based ADC (Analog-to-Digital Converter). Design/methodology/approach The use of feedback predictive encoder based ADCs presents ...
An analytical spectral formulation of glottal flow

Walker, Jacqueline; Murphy, Peter (2003)

The need for accurate voice source characterisation is an established goal in speech processing research. Practical limitations prohibit the widescale use of a glottal source/vocal tract filter implementation for many ...
Application of a logarithmic complementary metal–oxide–semiconductor camera in white-light interferometry

Egan, Patrick; Lakestani, Fereydoun; Whelan, Maurice P.; Connelly, Michael J. (IEEE Computer Society, 2008)

This paper describes the characterization, modeling, and application of a direct-readout complementary metal–oxide–semiconductor (CMOS) camera in white-light interferometry (WLI). The camera that was used consisted of a ...
Application of bispectrum based signal reconstruction to sEMG signal

Shahid, Shahjahan; Walker, Jacqueline (2001)

The surface electromyogram (sEMG) conveys information about the physiological properties of muscles. Unlike the power spectrum, the bispectrum can suppress noise when characterizing non-Gaussian random signals. In this ...
The application of data analysis methods for surface electromyography in shot putting and sprinting

Howard, Róisín Marie (University of Limerick, 2016)

Muscles are the key drivers in any human movement. Since the muscles generate the forces and consequently the impulses to move the athlete from one position to another, it can be useful to study the muscle activity during ...
Application of higher order statistics techniques to EMG signals to characterize the motor unit action potential

Shahid, Shahjahan; Walker, Jacqueline; Lyons, Gerard M.; Byrne, Ciaran A.; Nene, Anand (IEEE Computer Society, 2005)

The electromyographic (EMG) signal provides information about the performance of muscles and nerves. At any instant, the shape of the muscle signal, motor unit action potential (MUAP), is constant unless there is movement ...
Application of the bispectrum to glottal pulse analysis

Walker, Jacqueline (International Speech Communication Association, 2003)

Higher order spectral (HOS) techniques, such as the bispectrum, offer robustness to Gaussian noise and the ability to recover phase information. However, their drawbacks, such as the high variance of estimates and the ...

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