Browsing Masters Degrees (Electronic Engineering) by Title
Now showing items 103-122 of 136
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Quality of service for voice over next generation networks.
(2004)The Global communications transformation is currently in progress. Packet switched technology has moved from data - only applications into the heart of the network to take up the functions of traditional circuit - switched ... -
Quantifying steganographic embedding capacity in DCT-based embedding schemes.
(2012)Digital image steganography has been made relevant by the rapid increase in media sharing over the Internet and has thus experienced a renaissance. This dissertation starts with a discussion of the role of modern digital ... -
Rain attenuation modelling for line-of-sight terrestrial links.
(2006)In today's rapidly expanding communications industry, there is an ever-increasing demand for greater bandwidth, higher data rates and better spectral efficiency. As a result current and future communication systems will ... -
Rain attenuation modelling for Southern Africa.
(2008)In order to address rain attenuation scattering of millimetric waves and microwave sin Botswana, we have employed a comparison technique to determine the Ro.o1 at fourteen diverse locations in Botswana. In addition we have ... -
Rain cell size attenuation modelling for terrestrial and satellite radio links.
(2011)There is need to improve prediction results in rain attenuation in order to achieve reliable wireless communication systems. Existing models require improvements or we need fresh approaches. This dissertation presents a ... -
Rain rate and rain drop size distribution models for line-of-sight millimetric systems in South Africa.
(2006)Radio frequencies at millimeter wavelengths suffer greatly from rain attenuation. It is therefore essential to study rainfall characteristics for efficient and reliable design of radio networks at frequencies above 10GHz. ... -
Real-time simulator studies and model development for time-down voltage stability analysis.
(2006)Problems of voltage stability and voltage collapse have become a major concern in power system planning and operation in recent years, often as a result of power systems being operated under much more stressed conditions ... -
Repeat--punctured turbo codes and superorthogonal convolutional turbo codes.
(2007)The use of error-correction coding techniques in communication systems has become extremely imperative. Due to the heavy constraints faced by systems engineers more attention has been given to developing codes that ... -
Repeat-punctured turbo coded cooperation.
(2010-09-01)Transmit diversity usually employs multiple antennas at the transmitter. However, many wireless devices such as mobile cellphones, Personal Digital Assistants (PDAs), just to name a few, are limited by size, hardware ... -
Repeat-punctured turbo trellis-coded modulation.
(2010)Ever since the proposal of turbo code in 1993, there has been extensive research carried out to improve both the performance and spectrum efficiency. One of the methods used to improve the spectrum efficiency was to ... -
Research and design of an embedded controller and GUI for the automation of the armature Volt-Drop test.
(2009)In a rapidly evolving technological and industrialised society, automation is a current and growing trend. The concept is typically applied to uneconomical processes and extends from the automation of highly complex ... -
Robust multivariable control design : an application to a bank-to-turn missile.
(2011)Multi-input multi-output (MIMO) control system design is much more difficult than single-input single output (SISO) design due to the combination of cross-coupling and uncertainty. An investigation is undertaken into ... -
Scale coding a bag of words for real-time video-based action recognition.
(2021)Abstract available in PDF. -
Signal space cooperative communication with partial relay selection.
(2012)Exploiting the available diversity from various sources in wireless networks is an easy way to improve performance at the expense of additional hardware, space, complexity and/or bandwidth. Signal space diversity (SSD) ... -
Signal space diversity with and without Alamouti transmit diversity using generalised selection combining.
(2015)The first contribution is based on M-ary quadrature amplitude modulation (M-QAM) constellations with signal space diversity (SSD) using a single transmit and receive antenna system in the presence of Rayleigh fading. Two ... -
Soft-output detection for transit antenna index modulation-based schemes.
(2016)Abstract available in PDF file. -
Spatial modulation : improving throughput over non-cascaded fading channels and performance analysis over cascaded fading channels.
(2012)Small mobile devices which have an ability to access the world wide web (WWW) wirelessly are in demand of late. This demand is attributed to the fact that video and audio streaming are cost effectively accessible via the ... -
A structure from motion solution to head pose recovery for model-based video coding.
(2005)Current hybrid coders such as H.261/263/264 or MPEG-l/-2 cannot always offer high quality-to-compression ratios for video transfer over the (low-bandwidth) wireless channels typical of handheld devices (such as smartphones ... -
Study of lower sampling intervals on rainfall queue characteristics over Radio Links in South Africa.
(2017)Rainfall attenuation in tropical and subtropical regions of the world has continued to attract great interest; as there is a urgent emphasis on proper spectrum management and sharing, particularly at microwave and millimeter ...