University of KwaZulu-Natal

Displaying 1-15 of 15 results

  • White Papers // May 2012

    Diversity, Coding, and Multiplexing Trade-Off of Network-Coded Cooperative Wireless Networks

    In this paper, the authors study the performance of network - coded cooperative diversity systems with practical communication constraints. More specifically, they investigate the interplay between diversity, coding, and multiplexing gain when the relay nodes do not act as dedicated repeaters, which only forward data packets transmitted by the sources,...

    Provided By University of KwaZulu-Natal

  • White Papers // May 2012

    Millimeter Waves Channel Measurements and Path Loss Models

    This paper describes a measurement campaign performed in a modern building at the University of L'Aquila, Italy. Measurements are taken for two large bands around 60 GHz, i.e. 54-59 and 61-66 GHz. The channel probe is an ultrawideband (UWB) PN-sequence signal having a bandwidth of 1.2 GHz, which is up-converted...

    Provided By University of KwaZulu-Natal

  • White Papers // Aug 2011

    Modified Dynamic Source Routing for Wireless Sensor Networks: End-to-End Delay Analysis

    Routing presents a significant design challenge to meet various application requirements in Wireless Sensor Networks (WSNs) communication. In this paper, the authors propose a minimum-delay multipath routing protocol with modification to Dynamic Source Routing (DSR) protocol, which aims to minimize end-to-end delay to provide Quality of Service (QoS) support for...

    Provided By University of KwaZulu-Natal

  • White Papers // Feb 2011

    Measuring Portfolio Diversification

    In the market place, diversification reduces risk and provides protection against extreme events by ensuring that one is not overly exposed to individual occurrences. The authors argue that diversification is best measured by characteristics of the combined portfolio of assets and introduce a measure based on the information entropy of...

    Provided By University of KwaZulu-Natal

  • White Papers // Oct 2010

    Reasoning on Business Processes and Ontologies in a Logic Programming Environment

    In this paper, the authors presented the main ideas of a framework conceived to complement existing business modeling tools by providing advanced reasoning services. The proposed platform consists of several parts: an ontological framework, OPAL, to capture the semantics of the business scenario; a business process modeling framework, BPAL, to...

    Provided By University of KwaZulu-Natal

  • White Papers // Jul 2010

    Performance of Extended Super-Orthogonal Space -Time Trellis Coded OFDM System

    In this paper, the performance of extended super orthogonal space time trellis coded orthogonal frequency division multiplexing system is investigated in frequency selective wideband wireless channels. New 16, 32 and 64 states full rate extended super orthogonal space time trellis codes for quadrature phase shift keying are proposed using the...

    Provided By University of KwaZulu-Natal

  • White Papers // Jun 2010

    Beyond Routing via Network Coding: An Overview of Fundamental Information-Theoretic Results

    Since the pioneering research work of Ahlswede et al. in 2000, Network Coding (NC) has rapidly emerged as a major research area in electrical engineering and computer science due to its wide applicability to communication through real networks. The many contributions available in the literature to date, ranging from pure...

    Provided By University of KwaZulu-Natal

  • White Papers // Mar 2010

    Trust Establishment in Ad Hoc Networks by Certificate Distribution and Postponed Verification

    Trust establishment in wireless ad hoc networks is a challenge because of its unique characteristics. These include the lack of a central authority and the autonomous, dynamic nature of these networks which result in poor connectivity and routing failure. Security can be provided by a certificate based model but key...

    Provided By University of KwaZulu-Natal

  • White Papers // Sep 2009

    Indirect Taxation And Gender Equity: Evidence From South Africa

    This paper explores the equity implications of indirect or consumption taxes from a gender perspective, using detailed expenditure data for South Africa. While a growing literature on the incidence of indirect taxes investigates their impact on the income distribution in developing countries, there is little work on whether indirect taxes...

    Provided By University of KwaZulu-Natal

  • White Papers // Aug 2009

    A Comparison of Scheduling Algorithms in HSDPA

    This paper compares the behaviour of Earliest Deadline First (EDF) and Opportunistic-EDF (O-EDF) with that of Round Robin, Proportional Fair Throughput (PFT), and Maximum Carrier to Interference ratio (MaxC/I). Video, voice and web traffic are transmitted through an HSDPA air interface. The resultant queueing delay and fairness are measured and...

    Provided By University of KwaZulu-Natal

  • White Papers // Jul 2009

    Design and Implementation of Wireless Sensor Network for Wildlife Monitoring (May 2009)

    Wireless Sensor Networks (WSN) is a popular and interesting field of research in the study of wildlife. In this paper, the design of a WSN that will be used to remotely monitor wildlife is proposed. The sensor nodes designed were small, low powered units to allow them to be mounted...

    Provided By University of KwaZulu-Natal

  • White Papers // Jul 2009

    Analytical Modeling of Rain Attenuation and Its Application to Terrestrial LOS Links

    The aim of this paper is to propose an analytical model for the calculation of rain attenuation on terrestrial line-of-sight link. This paper employs Mie theory for electromagnetic scattering by dielectric sphere on raindrops, under the assumption that the shapes of the raindrops are spherical. Complex forward scattering amplitudes of...

    Provided By University of KwaZulu-Natal

  • White Papers // Jul 2009

    A Hybrid Trust Model for Mobile Ad Hoc Networks

    Trust establishment is a key aspect of network management. Establishing trust in a wireless ad hoc network environment is a challenge because of its unique characteristics. These include the lack of a central authority and the autonomous, dynamic nature of these networks which result in poor connectivity and routing failure....

    Provided By University of KwaZulu-Natal

  • White Papers // May 2009

    Towards Effective Service Delivery Via Customer Relationship Management

    The White Paper on Transformation of the Public Service (Batho Pele) served as the cornerstone of introducing the Principles of Batho Pele to further and enhances the agenda for service delivery. One of the critical principles of Batho Pele is that of its customer focus. This principle is premised on...

    Provided By University of KwaZulu-Natal

  • White Papers // Dec 2008

    The Development Of Financial Reporting For SMEs In South Africa: Implications Of Recent And Impending Changes

    South Africa has become the first country in the world to adopt the International Accounting Standards Board's proposed International Financial Reporting Standards for Small and Medium-sized Entities in its exposure draft form as a transitional standard for limited interest companies without public accountability. Previously, all South African companies, irrespective of...

    Provided By University of KwaZulu-Natal

  • White Papers // Jun 2010

    Beyond Routing via Network Coding: An Overview of Fundamental Information-Theoretic Results

    Since the pioneering research work of Ahlswede et al. in 2000, Network Coding (NC) has rapidly emerged as a major research area in electrical engineering and computer science due to its wide applicability to communication through real networks. The many contributions available in the literature to date, ranging from pure...

    Provided By University of KwaZulu-Natal

  • White Papers // May 2009

    Towards Effective Service Delivery Via Customer Relationship Management

    The White Paper on Transformation of the Public Service (Batho Pele) served as the cornerstone of introducing the Principles of Batho Pele to further and enhances the agenda for service delivery. One of the critical principles of Batho Pele is that of its customer focus. This principle is premised on...

    Provided By University of KwaZulu-Natal

  • White Papers // Dec 2008

    The Development Of Financial Reporting For SMEs In South Africa: Implications Of Recent And Impending Changes

    South Africa has become the first country in the world to adopt the International Accounting Standards Board's proposed International Financial Reporting Standards for Small and Medium-sized Entities in its exposure draft form as a transitional standard for limited interest companies without public accountability. Previously, all South African companies, irrespective of...

    Provided By University of KwaZulu-Natal

  • White Papers // Sep 2009

    Indirect Taxation And Gender Equity: Evidence From South Africa

    This paper explores the equity implications of indirect or consumption taxes from a gender perspective, using detailed expenditure data for South Africa. While a growing literature on the incidence of indirect taxes investigates their impact on the income distribution in developing countries, there is little work on whether indirect taxes...

    Provided By University of KwaZulu-Natal

  • White Papers // Feb 2011

    Measuring Portfolio Diversification

    In the market place, diversification reduces risk and provides protection against extreme events by ensuring that one is not overly exposed to individual occurrences. The authors argue that diversification is best measured by characteristics of the combined portfolio of assets and introduce a measure based on the information entropy of...

    Provided By University of KwaZulu-Natal

  • White Papers // Mar 2010

    Trust Establishment in Ad Hoc Networks by Certificate Distribution and Postponed Verification

    Trust establishment in wireless ad hoc networks is a challenge because of its unique characteristics. These include the lack of a central authority and the autonomous, dynamic nature of these networks which result in poor connectivity and routing failure. Security can be provided by a certificate based model but key...

    Provided By University of KwaZulu-Natal

  • White Papers // Jul 2010

    Performance of Extended Super-Orthogonal Space -Time Trellis Coded OFDM System

    In this paper, the performance of extended super orthogonal space time trellis coded orthogonal frequency division multiplexing system is investigated in frequency selective wideband wireless channels. New 16, 32 and 64 states full rate extended super orthogonal space time trellis codes for quadrature phase shift keying are proposed using the...

    Provided By University of KwaZulu-Natal

  • White Papers // Jul 2009

    Design and Implementation of Wireless Sensor Network for Wildlife Monitoring (May 2009)

    Wireless Sensor Networks (WSN) is a popular and interesting field of research in the study of wildlife. In this paper, the design of a WSN that will be used to remotely monitor wildlife is proposed. The sensor nodes designed were small, low powered units to allow them to be mounted...

    Provided By University of KwaZulu-Natal

  • White Papers // Aug 2009

    A Comparison of Scheduling Algorithms in HSDPA

    This paper compares the behaviour of Earliest Deadline First (EDF) and Opportunistic-EDF (O-EDF) with that of Round Robin, Proportional Fair Throughput (PFT), and Maximum Carrier to Interference ratio (MaxC/I). Video, voice and web traffic are transmitted through an HSDPA air interface. The resultant queueing delay and fairness are measured and...

    Provided By University of KwaZulu-Natal

  • White Papers // Jul 2009

    A Hybrid Trust Model for Mobile Ad Hoc Networks

    Trust establishment is a key aspect of network management. Establishing trust in a wireless ad hoc network environment is a challenge because of its unique characteristics. These include the lack of a central authority and the autonomous, dynamic nature of these networks which result in poor connectivity and routing failure....

    Provided By University of KwaZulu-Natal

  • White Papers // Jul 2009

    Analytical Modeling of Rain Attenuation and Its Application to Terrestrial LOS Links

    The aim of this paper is to propose an analytical model for the calculation of rain attenuation on terrestrial line-of-sight link. This paper employs Mie theory for electromagnetic scattering by dielectric sphere on raindrops, under the assumption that the shapes of the raindrops are spherical. Complex forward scattering amplitudes of...

    Provided By University of KwaZulu-Natal

  • White Papers // Aug 2011

    Modified Dynamic Source Routing for Wireless Sensor Networks: End-to-End Delay Analysis

    Routing presents a significant design challenge to meet various application requirements in Wireless Sensor Networks (WSNs) communication. In this paper, the authors propose a minimum-delay multipath routing protocol with modification to Dynamic Source Routing (DSR) protocol, which aims to minimize end-to-end delay to provide Quality of Service (QoS) support for...

    Provided By University of KwaZulu-Natal

  • White Papers // May 2012

    Diversity, Coding, and Multiplexing Trade-Off of Network-Coded Cooperative Wireless Networks

    In this paper, the authors study the performance of network - coded cooperative diversity systems with practical communication constraints. More specifically, they investigate the interplay between diversity, coding, and multiplexing gain when the relay nodes do not act as dedicated repeaters, which only forward data packets transmitted by the sources,...

    Provided By University of KwaZulu-Natal

  • White Papers // May 2012

    Millimeter Waves Channel Measurements and Path Loss Models

    This paper describes a measurement campaign performed in a modern building at the University of L'Aquila, Italy. Measurements are taken for two large bands around 60 GHz, i.e. 54-59 and 61-66 GHz. The channel probe is an ultrawideband (UWB) PN-sequence signal having a bandwidth of 1.2 GHz, which is up-converted...

    Provided By University of KwaZulu-Natal

  • White Papers // Oct 2010

    Reasoning on Business Processes and Ontologies in a Logic Programming Environment

    In this paper, the authors presented the main ideas of a framework conceived to complement existing business modeling tools by providing advanced reasoning services. The proposed platform consists of several parts: an ontological framework, OPAL, to capture the semantics of the business scenario; a business process modeling framework, BPAL, to...

    Provided By University of KwaZulu-Natal