University of Cape Town

Displaying 41-58 of 58 results

  • White Papers // Jul 2009

    The Importance of Trust and Risk in M-Commerce: A South African Perspective

    Despite the hype associated with m-commerce and the massive revenue predictions by research companies, current adoption figures by consumers seem to demonstrate a lack of enthusiasm for more advanced services. A key reason cited in the literature is a lack of trust. M-commerce transactions are often characterised by complex technology,...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Performance Evaluation of IMS Multimedia Over WiMAX

    Telecommunication networks have evolved steadily to meet the ever increasing demand of users. Hence, the Internet Protocol Multimedia Subsystem (IMS) will make it possible to provide ubiquitous computing to the end-user. WiMAX is based on the IEEE 802.16 standard engineered to provide wireless broadband access, but the main focus of...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Handover Optimization in Heterogeneous Wireless Networks: PMIPv6 Vs. PMIPv6 With MIH

    Next generation wireless networks are expected to integrate and coordinate heterogeneous communication networks to enable network access ubiquity. Unfortunately, this integration of different networks results in performance degradation when handovers occur among the networks during a mobility event. Thus, there is a requirement for effective mobility management protocols to support...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    A Connectivity Model for Inter-Working Multi-Hop Wireless Networks

    In inter-working multi-hop wireless networks, establishing resilient connectivity between source-destination node pairs is a major issue. The issues of connectivity in multi-hop wireless networks have been studied. However, these analyses focused on network connectivity in ad-hoc networks. Since the next generation of wireless networks will be inter-working, an understanding of...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Understanding Channel Saturation in Multi-Channel MAC Systems

    Multi-channel MAC systems offer high capacity, a prerequisite for the next generation networks. High capacity will ensure that the requirements of delay sensitive and time bounded flows are met. For high capacity to be a reality, a good channel selection, coordination scheme and network connectivity is required. A common control...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Performance Evaluation of Low-Complexity Decision-Feedback Detector for SM-MIMO-OFDM Systems

    Spatially Multiplexed Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (SM-MIMO-OFDM) technology is envisaged to raise transmission capacity over the wireless channels up to 10bps/Hz, allowing for ubiquitous access to multimedia services in the 4G cellular networks. Future transceivers will incorporate MIMO antenna arrays of larger dimensions than those specified in the...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    End-to-End QoS Control for an ALL-IP (NGN) Platform Using WiMax as an Access Layer Network

    Telecommunications networks are evolving towards an integrated ALL-IP architecture, commonly known as the Next Generation Network (NGN). The architecture consists of broadband transport technologies both on the access and core networks. One of the problems in NGN architecture is the ability to guarantee end-to-end Quality of Service (QoS) provisioning to...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    The Use of NGN/IMS for Cloud and Grid Services Control and Management

    The ETSI Technical Committee (TC) GRID is addressing issues associated with the convergence of IT and Telecommunications, with particular reference to the lack of interoperable Grid solutions. The integration of grid technology provides new revenue streams for Telecom operators through their converged fixed, mobile and data services from their Next...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Channel Capacity Performance of Transmit Antenna Selective MIMO System in Weibull Fading

    Multiple-Input Multiple-Output (MIMO) systems play a great role in improving communication in wireless systems. But an increase in the number of antennas used in a communication system results in increased system complexity. To address this drawback associated with MIMO systems the authors propose the use of a transmit antenna selective...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    A Direct Marketing Platform for IMS-Based IPTV

    The widespread adoption of the IP Multimedia Subsystem (IMS) by operators faced many challenges. Currently, telephone companies (telcos) all over the world are rolling out Next Generation Networks (NGN). Moreover, a number of operators already have an IMS infrastructure in place. Deploying an IMS architecture requires heavy investments. Thus, telcos...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Economic Growth In South Africa Since The Late Nineteenth Century

    The analysis has identified the sources of economic growth in South Africa against the backdrop of international economic developments. Between 1870 and 1914, the international regime was one of free capital flows - both direct and portfolio - and free trade. This allowed the diamond and gold industries to establish...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Exploring the Use of Discrete Gestures for Authentication

    Research in user authentication has been a growing field in HCI. Previous studies have shown that people's graphical memory can be used to increase password memorability. On the other hand, with the increasing number of devices with built-in motion sensors, kinesthetic memory (or muscle memory) can also be exploited for...

    Provided By University of Cape Town

  • White Papers // Jun 2009

    Analysis of Route Availability in Inter-working Multi-hop Wireless Networks

    In order to link a source-destination node pair in inter-working multi-hop wireless networks, links or routes must first be available. It is only after establishing the availability of links and routes between nodes that factors which affect connectivity e.g. interference can be considered. Connectivity in multi-hop wireless networks has been...

    Provided By University of Cape Town

  • White Papers // May 2009

    WiFi Hotspot Network Monitoring Tool: Project Proposal

    Wireless Fidelity (Wi-Fi) is a wireless networking technology that uses radio waves to provide high-speed, wireless internet and network connections. This technology is based on the IEEE 802.11 standards, including the 802.11a and 802.11b (IEEE, 1999). This technology has proven to be the fast-wireless networking approach that is relatively easy...

    Provided By University of Cape Town

  • White Papers // Apr 2009

    Link and Route Availability for Inter-working Multi-hop Wireless Networks

    In inter-working multi-hop wireless networks, establishing resilient connectivity between source-destination node pairs is a major issue. The issues of connectivity in multi-hop wireless networks have been studied. However these analyzes focused on network connectivity in ad-hoc networks. Since the next generation of wireless networks will be inter-working, an understanding of...

    Provided By University of Cape Town

  • White Papers // Dec 2008

    The Welfare Cost Of Banking Regulation

    The Basel Accords promote the adoption of capital adequacy requirements to increase the banking sector's stability. Unfortunately, this type of regulation can hamper economic growth by shifting banks' portfolios from more productive, risky investment projects toward less productive but safer projects. This paper introduces banking regulation in an overlapping-generations model...

    Provided By University of Cape Town

  • Case Studies // Nov 2008

    Case Study 7 Interactive Spreadsheets

    This case study speaks about the perceptions of students about Statistics. The subject is generally considered difficult and intensive by the students. The paper seeks to increase students' awareness about this subject. The research paper revolves around the steps taken by the Department of Statistics at the University of Cape...

    Provided By University of Cape Town

  • White Papers // Aug 2008

    Exploring The Relationship Between Network Competence, Network Capability, And Firm Performance: A Resource Based Perspective In An Emerging Economy

    Growing attention to business-to-business networks and the demonstrated linkage between firm performance and collaborative efforts within these networks, fuels the continued search for a greater understanding of what is needed to manage in complex business constellations. A key component of this challenge, and the focus of this paper, is the...

    Provided By University of Cape Town

  • White Papers // Aug 2009

    Foreign Direct Investment In Zimbabwe: The Role Of Institutional Factors

    The purpose of the paper is to examine the impact of property rights on Foreign Direct Investment (FDI) in Zimbabwe for the period 1964-2005. While the macroeconomic determinants of FDI have been analyzed to a considerable extent in past empirical work, the role of institutional factors such as the protection...

    Provided By University of Cape Town

  • White Papers // Mar 2011

    South African Mining Equipment And Related Services: Growth, Constraints And Policy

    Like many other developing economy regions, Africa is benefitting from a sustained boom in commodities prices. Received wisdom has been that commodities production is an inherently enclave activity and that it undermines the viability of industry. The Making the Most of Commodities Programme challenges this negative view of the commodities...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Economic Growth In South Africa Since The Late Nineteenth Century

    The analysis has identified the sources of economic growth in South Africa against the backdrop of international economic developments. Between 1870 and 1914, the international regime was one of free capital flows - both direct and portfolio - and free trade. This allowed the diamond and gold industries to establish...

    Provided By University of Cape Town

  • White Papers // Oct 2010

    Evaluation of Interference in Inter-Working Multi-Hop Wireless Networks

    The consequence of simultaneous transmissions by nodes in inter-working multi-hop wireless networks is inter-node interference. Inter-node interference is a metric that is important for the performance evaluation of inter-working wireless networks. Several interference models exist in literature, however, these models are for specific wireless networks and MAC protocols. Due to...

    Provided By University of Cape Town

  • White Papers // Jul 2010

    Analysis of Network Operators' Revenue With a Dynamic Pricing Model Based on User Behavior in NGWN Using JCAC

    Next generation of wireless networks are expected to be heterogeneous, whereby multiple radio access technologies will work together in a coordinated fashion. These networks will be required to accommodate different types of users with different QoS requirements. Effective Joint Call Admission Control (JCAC) algorithms are a prerequisite in NGWN to...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Performance Evaluation of Low-Complexity Decision-Feedback Detector for SM-MIMO-OFDM Systems

    Spatially Multiplexed Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (SM-MIMO-OFDM) technology is envisaged to raise transmission capacity over the wireless channels up to 10bps/Hz, allowing for ubiquitous access to multimedia services in the 4G cellular networks. Future transceivers will incorporate MIMO antenna arrays of larger dimensions than those specified in the...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Channel Capacity Performance of Transmit Antenna Selective MIMO System in Weibull Fading

    Multiple-Input Multiple-Output (MIMO) systems play a great role in improving communication in wireless systems. But an increase in the number of antennas used in a communication system results in increased system complexity. To address this drawback associated with MIMO systems the authors propose the use of a transmit antenna selective...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Performance Evaluation of IMS Multimedia Over WiMAX

    Telecommunication networks have evolved steadily to meet the ever increasing demand of users. Hence, the Internet Protocol Multimedia Subsystem (IMS) will make it possible to provide ubiquitous computing to the end-user. WiMAX is based on the IEEE 802.16 standard engineered to provide wireless broadband access, but the main focus of...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Linear Detector Performance in Ill-Conditioned MIMO OFDM Channels

    This paper investigates the performance of linear detector based receivers in MIMO OFDM systems. Two linear detectors are compared that is: Zero Forcing (ZF) and the Minimum Mean Square Error (MMSE). The introduction of interference cancellation will be shown to greatly improve linear detector Bit Error Rates (BER). The performance...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    End-to-End QoS Control for an ALL-IP (NGN) Platform Using WiMax as an Access Layer Network

    Telecommunications networks are evolving towards an integrated ALL-IP architecture, commonly known as the Next Generation Network (NGN). The architecture consists of broadband transport technologies both on the access and core networks. One of the problems in NGN architecture is the ability to guarantee end-to-end Quality of Service (QoS) provisioning to...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Handover Optimization in Heterogeneous Wireless Networks: PMIPv6 Vs. PMIPv6 With MIH

    Next generation wireless networks are expected to integrate and coordinate heterogeneous communication networks to enable network access ubiquity. Unfortunately, this integration of different networks results in performance degradation when handovers occur among the networks during a mobility event. Thus, there is a requirement for effective mobility management protocols to support...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    A Connectivity Model for Inter-Working Multi-Hop Wireless Networks

    In inter-working multi-hop wireless networks, establishing resilient connectivity between source-destination node pairs is a major issue. The issues of connectivity in multi-hop wireless networks have been studied. However, these analyses focused on network connectivity in ad-hoc networks. Since the next generation of wireless networks will be inter-working, an understanding of...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    A Direct Marketing Platform for IMS-Based IPTV

    The widespread adoption of the IP Multimedia Subsystem (IMS) by operators faced many challenges. Currently, telephone companies (telcos) all over the world are rolling out Next Generation Networks (NGN). Moreover, a number of operators already have an IMS infrastructure in place. Deploying an IMS architecture requires heavy investments. Thus, telcos...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    Understanding Channel Saturation in Multi-Channel MAC Systems

    Multi-channel MAC systems offer high capacity, a prerequisite for the next generation networks. High capacity will ensure that the requirements of delay sensitive and time bounded flows are met. For high capacity to be a reality, a good channel selection, coordination scheme and network connectivity is required. A common control...

    Provided By University of Cape Town

  • White Papers // Jul 2009

    The Use of NGN/IMS for Cloud and Grid Services Control and Management

    The ETSI Technical Committee (TC) GRID is addressing issues associated with the convergence of IT and Telecommunications, with particular reference to the lack of interoperable Grid solutions. The integration of grid technology provides new revenue streams for Telecom operators through their converged fixed, mobile and data services from their Next...

    Provided By University of Cape Town

  • White Papers // Jan 2011

    Call Admission Control With Pricing to Ensure Revenue for Network Operators While Providing QoS in Heterogeneous Networks

    Heterogeneous networks are the next generation of wireless networks. They are envisioned to offer high data rates and multimedia services. Additionally, they are intended to offer services to users regardless of the access technology. Provision of multimedia services to users will result in high demand for radio resources, which are...

    Provided By University of Cape Town

  • White Papers // Jul 2010

    A Context-Oriented Service Brokering Platform for the IP Multimedia Subsystem

    The rise of Web 2.0 applications has led to the need for the evolution of the Telecommunications business model. In this paper, the authors have proposed a context-oriented Service Brokering Platform for the IP Multimedia Subsystem. The proposed SBP framework will allow Telecoms operators to leverage existing services for use...

    Provided By University of Cape Town

  • White Papers // Dec 2010

    Micro, Small and Medium Enterprises' Activities, Income Level and Poverty Reduction in Ghana - A Synthesis of Related Literature

    The paper reviews the literature on the importance of MSMEs to economic development and poverty alleviation. Two divergent views of MSMEs, the pro-MSMEs and the anti-MSMEs, have been identified in the literature. Whereas the pro-MSMEs believe in the significant role played by small business in the economic prosperity of a...

    Provided By University of Cape Town