Electrical Communication Engineering (ECE): Recent submissions
Now showing items 1-20 of 523
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Signal processing algorithms for minimization of artefacts in electroencephalogram
Electroencephalogram (EEG) is a record of the electrical activity of the human brain picked up by applying electrodes on the scalp. One of the major problems associated with the processing of EEG signals is the presence ... -
Some studies on composite dielectric materials
Two phase composite dielectrics made of conducting and insulating phases provide the flexibility to alter the dielectric and related properties of the insulating material. By proper choice of the insulating and conducting ... -
Algorithms for Computing the Capacity of Finite State MarkovChannels
Capacity Computation of Finite State Markov Channels Using Regenerative Methods Abstract Introduction Information-theoretic aspects are fundamental to communication systems. With recent advances in wireless communication, ... -
Parametric spectral modelling of electroencephalography(EEG)
Electroencephalograph (EEG) has become an indispensable tool in clinical neurophysiology and related fields. The EEG mainly contains frequency related activities such as alpha, beta, theta, and delta rhythms, which are ... -
Dielectric coated spherically-tipped metal cone aerials excited in the unsymmetric hybrid more
Abstract Not Available -
Bandwidth of linear antenna arrays�
Presented in this thesis are the following theoretical investigations on linear antenna arrays: A generalised expression for the array factor of a linear antenna array has been derived, which can be applied to both equally ... -
Some studies on Automatic-Repeat-Request error-Control schemes
Presented in this thesis are the following theoretical investigations carried out on Automatic Repeat Request (ARQ) error?control schemes. A new type of modified generalized stop?and?wait ARQ scheme is proposed and worked ... -
Signal Design for pulse compression
Society抯 dependence on electronic and electrical systems has increased rapidly over the past few decades, and people are relying more and more on these gadgets in their daily life because of the efficiency in operation ... -
Synthesis of arbitary antenna arrays
Design of antenna arrays for present?day requirements has to take into account both mechanical and electrical aspects. Mechanical aspects demand that the antennas have low profile, non?protruding structures, and structures ... -
Novel instrumentation and communication system for GMRT�
Radio telescopes are indispensable tools for frontline research in astronomy and astrophysics. In all radio telescopes, the control and monitor system provides the necessary coordination between the various building blocks ... -
Transform techniques for optical wave guides.
Practical applications of integrated optics require understanding of light propagation in dielectric waveguides of various geometries and call for elegant and quick methods of analysis. The aim of the thesis is to analyse ... -
Non-uniform sample based speech analysis and coding
The utility of non?uniform sample?based analysis and reconstruction of speech signals is explored. Instead of a perfect reconstruction criterion, properties of speech perception are exploited to select non?uniform samples ... -
Data communication in the presence of atomospheric noise bursts
At tropical latitudes, atmospheric noise bursts constitute an important interference to digital communication. The characteristics of these noise bursts have been extensively studied in the LF, MF and HF bands. Satisfactory ... -
Modeling the electrostatics of symmetric double gate MOSFETs
The continuous downsizing of Complementary Metal Oxide Semiconductor (CMOS) technology has resulted in drastic degradation of the performance of conventional MOS transistors. As a result, new transistor architectures need ... -
On the Sum-Rate Capacity of Gaussian X Channels
Interference caused by the reception of unintended signals at the receivers is a major source of performance bottleneck limiting the capacity of wireless communication systems. An interesting model to study the effect of ... -
Two signal estimation problems in the presence of chaos
We consider the dynamical system defined by the pair ([a,b],f)([a, b], f)([a,b],f), where [a,b][a, b][a,b] is a compact interval of R\mathbb{R}R and f:[a,b]?[a,b]f : [a, b] \rightarrow [a, b]f:[a,b]?[a,b] is a continuous ... -
Design and Development of a Hybrid TDMA/CDMA MAC Protocol for Multimedia Wireless Networks�
A Wireless Local Area Network (WLAN) provides high bandwidth to users in a limited geographical area. This network faces certain challenges and constraints that are not imposed on their wired counterparts. These include ... -
Diversity-Rate Trade-Off in an channel with fading
We study the diversity order versus rate of an additive white Gaussian noise (AWGN) channel in the whole capacity region. We show that for both discrete and continuous inputs, Gallager抯 upper bounds on error probability ... -
Routing and dimensioning in optical networks under traffic growth models
With the rapid growth of the Internet and the World Wide Web, we are seeing a relentless demand for networks of higher and higher capacities, at lower and lower costs. Fiber optics and wavelength-division multiplexing (WDM) ...