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University of the Witwatersrand
(15 results)-
White Papers
A Performance Comparison of Candidate 4G Air-Interfaces in a Simulated Cellular Environment
June 18, 2007, 12:00am PDT
Development of the Fourth Generation of mobile communication systems, or 4G, has already begun in various organizations and research institutions worldwide. There is currently no single conclusive...
Provided by University of the Witwatersrand
-
White Papers
An Independent Evaluation of Subspace Face Recognition Algorithms
February 15, 2007, 12:00am PST
This paper explores a comparative study of both the linear and kernel implementations of three of the most popular Appearance-based Face Recognition projection classes, these being the...
Provided by University of the Witwatersrand
-
White Papers
Fuzzy Artmap and Neural Network Approach to Online Processing of Inputs With Missing Values
May 8, 2007, 12:00am PDT
An ensemble based approach for dealing with missing data, without predicting or imputing the missing values is proposed. This technique is suitable for online operations of neural networks and as...
Provided by University of the Witwatersrand
-
White Papers
Predicting the Presence of Internet Worms Using Novelty Detection
May 9, 2007, 12:00am PDT
Internet worms cause billions of dollars in damage yearly, affecting millions of users worldwide. For countermeasures to be deployed timeously, it is necessary to use an automated system to detect...
Provided by University of the Witwatersrand
-
White Papers
Managing the Converged Reconfigurable Radio System Architecture
April 28, 2010, 12:00am PDT
Heterogeneous wireless networks are created through the integration of numerous independently standardised Radio Access Technologies (RATs). This integration is achieved through the use of...
Provided by University of the Witwatersrand
-
White Papers
Direct Feedback Based on Cellular Technology to Support Demand-Side Energy Management
June 5, 2009, 12:00am PDT
The century-old power grids do not meet many of the requirements of modern economies. The invisibility of the details of electricity consumption is the prime cause behind much of the wastage of...
Provided by University of the Witwatersrand
-
White Papers
Detection of Primary Radio Signals in Cognitive Radio Environment
June 1, 2009, 12:00am PDT
This paper presents a work in progress on adaptive cognitive radio system. The paper discusses an approach towards the sensing and detection of primary radio signals using modulation...
Provided by University of the Witwatersrand
-
White Papers
A Modular Approach for the Development of a Reconfigurable Access Network Architecture
May 31, 2009, 12:00am PDT
The existence of numerous competing mobile standards forces network operators and subscribers to either upgrade or purchase new mobile equipment whenever new standards are developed. This is an...
Provided by University of the Witwatersrand
-
White Papers
A Computational Ecology Based Approach to Routing in Communication Networks
July 20, 2009, 12:00am PDT
The routing and flow control problems in communication networks are considered in this progress report. The problem is cast into an agent/resource allocation model referred to as a computational...
Provided by University of the Witwatersrand
-
White Papers
Using Public Cellular Networks to Provide Wireless Access in a Campus Environment
July 21, 2010, 12:00am PDT
Students of today require computer and network access to be as widespread as possible. Universities have responded by deploying campus wide Wi-Fi networks, but in many cases the capital and...
Provided by University of the Witwatersrand
-
White Papers
Performance Analysis of RSS-Based Geometric Positioning Methods in GSM Networks
July 19, 2010, 12:00am PDT
Location-based services are fast becoming popular in different areas of the world due to the availability of smart phones and investments by mobile operators in satisfying requests from users. The...
Provided by University of the Witwatersrand
-
White Papers
QoS-Guaranteed Connectivity in MPLS Networks Based on the TINA Network Resource Architecture
January 1, 2008, 12:00am PST
Next generation networks demand a structured method to deliver QoS assured connectivity in IP networks. The TINA Network Resource Architecture (NRA) offers a layered framework that allows...
Provided by University of the Witwatersrand
-
White Papers
Cooperative Sensing Reliability Improvement Algorithm for Primary Radio Signal Detection in Cognitive Radio Environment
August 4, 2011, 12:00am PDT
This paper addresses issues on cooperative spectrum sensing reliability improvement for primary radio signal detection in a cognitive radio environment. In particular, the paper extends previous...
Provided by University of the Witwatersrand
-
White Papers
Analysis of the Impact of Some Network Parameters on the Accuracy of RSS-Based Geometric Positioning Methods
August 4, 2011, 12:00am PDT
The accuracy of Received Signal Strength (RSS)-based positioning methods is highly variable due to its dependence on various varying parameters such as the wireless environment, topology of the...
Provided by University of the Witwatersrand
-
White Papers
Formalising the NGN Application Layer
March 1, 2010, 12:00am PST
Development of applications based on call/session signalling such as SIP is limited as it requires software programmers to possess detailed knowledge of telecommunications technologies. In...
Provided by University of the Witwatersrand
-
White Papers
Formalising the NGN Application Layer
March 1, 2010, 12:00am PST
Development of applications based on call/session signalling such as SIP is limited as it requires software programmers to possess detailed knowledge of telecommunications technologies. In...
Provided by University of the Witwatersrand
-
White Papers
Analysis of the Impact of Some Network Parameters on the Accuracy of RSS-Based Geometric Positioning Methods
August 4, 2011, 12:00am PDT
The accuracy of Received Signal Strength (RSS)-based positioning methods is highly variable due to its dependence on various varying parameters such as the wireless environment, topology of the...
Provided by University of the Witwatersrand
-
White Papers
Cooperative Sensing Reliability Improvement Algorithm for Primary Radio Signal Detection in Cognitive Radio Environment
August 4, 2011, 12:00am PDT
This paper addresses issues on cooperative spectrum sensing reliability improvement for primary radio signal detection in a cognitive radio environment. In particular, the paper extends previous...
Provided by University of the Witwatersrand
-
White Papers
Performance Analysis of RSS-Based Geometric Positioning Methods in GSM Networks
July 19, 2010, 12:00am PDT
Location-based services are fast becoming popular in different areas of the world due to the availability of smart phones and investments by mobile operators in satisfying requests from users. The...
Provided by University of the Witwatersrand
-
White Papers
Using Public Cellular Networks to Provide Wireless Access in a Campus Environment
July 21, 2010, 12:00am PDT
Students of today require computer and network access to be as widespread as possible. Universities have responded by deploying campus wide Wi-Fi networks, but in many cases the capital and...
Provided by University of the Witwatersrand
-
White Papers
A Computational Ecology Based Approach to Routing in Communication Networks
July 20, 2009, 12:00am PDT
The routing and flow control problems in communication networks are considered in this progress report. The problem is cast into an agent/resource allocation model referred to as a computational...
Provided by University of the Witwatersrand
-
White Papers
A Modular Approach for the Development of a Reconfigurable Access Network Architecture
May 31, 2009, 12:00am PDT
The existence of numerous competing mobile standards forces network operators and subscribers to either upgrade or purchase new mobile equipment whenever new standards are developed. This is an...
Provided by University of the Witwatersrand
-
White Papers
Detection of Primary Radio Signals in Cognitive Radio Environment
June 1, 2009, 12:00am PDT
This paper presents a work in progress on adaptive cognitive radio system. The paper discusses an approach towards the sensing and detection of primary radio signals using modulation...
Provided by University of the Witwatersrand
-
White Papers
Direct Feedback Based on Cellular Technology to Support Demand-Side Energy Management
June 5, 2009, 12:00am PDT
The century-old power grids do not meet many of the requirements of modern economies. The invisibility of the details of electricity consumption is the prime cause behind much of the wastage of...
Provided by University of the Witwatersrand
-
White Papers
Managing the Converged Reconfigurable Radio System Architecture
April 28, 2010, 12:00am PDT
Heterogeneous wireless networks are created through the integration of numerous independently standardised Radio Access Technologies (RATs). This integration is achieved through the use of...
Provided by University of the Witwatersrand
-
White Papers
Predicting the Presence of Internet Worms Using Novelty Detection
May 9, 2007, 12:00am PDT
Internet worms cause billions of dollars in damage yearly, affecting millions of users worldwide. For countermeasures to be deployed timeously, it is necessary to use an automated system to detect...
Provided by University of the Witwatersrand
-
White Papers
Fuzzy Artmap and Neural Network Approach to Online Processing of Inputs With Missing Values
May 8, 2007, 12:00am PDT
An ensemble based approach for dealing with missing data, without predicting or imputing the missing values is proposed. This technique is suitable for online operations of neural networks and as...
Provided by University of the Witwatersrand
-
White Papers
An Independent Evaluation of Subspace Face Recognition Algorithms
February 15, 2007, 12:00am PST
This paper explores a comparative study of both the linear and kernel implementations of three of the most popular Appearance-based Face Recognition projection classes, these being the...
Provided by University of the Witwatersrand
-
White Papers
A Performance Comparison of Candidate 4G Air-Interfaces in a Simulated Cellular Environment
June 18, 2007, 12:00am PDT
Development of the Fourth Generation of mobile communication systems, or 4G, has already begun in various organizations and research institutions worldwide. There is currently no single conclusive...
Provided by University of the Witwatersrand
-
White Papers
QoS-Guaranteed Connectivity in MPLS Networks Based on the TINA Network Resource Architecture
January 1, 2008, 12:00am PST
Next generation networks demand a structured method to deliver QoS assured connectivity in IP networks. The TINA Network Resource Architecture (NRA) offers a layered framework that allows...
Provided by University of the Witwatersrand
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