White Papers

Java-Based Bandwidth Measurement Tool for xDSL Networks

Overview In xDSL networks, accurate bandwidth measurement is useful for network management and traffic engineering, such as isolating line faults and verifying guaranteed QoS specifications, where ISP and xDSL provider may be involved. This paper presents a novel design and implementation of Java based tools for accurately measuring network bandwidth in xDSL networks, including asymmetric upstream and downstream cases. Considering ATM traffic shaping for ABR and UBR service classes in xDSL deployments, a stepwise algorithm is designed to minimize its effect on the bandwidth measurements. The algorithm is lightweight in terms of traffic overhead introduced. The accuracy of the algorithm is achieved by implementing an original traffic generator with stable performance.

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Publisher
University of Notre Dame
File Format
PDF
Date Published
Dec 4, 2008
Format
White Papers
Topics
Programming Languages, Quality of Service, Bandwidth Issues

University of Notre Dame White Papers

Maximum-Likelihood Carrier Frequency Offset Estimation for OFDM Systems in Fading Channels

Maximum-Likelihood Carrier Frequency Offset Estimation for OFDM Systems in Fading Channels

Carrier Frequency Offset (CFO) is a major contributor to the inter-carrier - interference in OFDM systems. This effect b

Publisher: University of Notre Dame  |  Tags: cfo

Enhanced Situational Awareness: Application of DDDAS Concepts to Emergency and Disaster Management

Enhanced Situational Awareness: Application of DDDAS Concepts to Emergency and Disaster Management

The paper describes a prototype emergency and disaster information system designed and implemented using DDDAS concepts.

Publisher: University of Notre Dame  |  Tags: cell phones, data, gps, real-time

Arbutus: Network-Layer Load Balancing for Wireless Sensor Networks

Arbutus: Network-Layer Load Balancing for Wireless Sensor Networks

The hot spot problem is a typical byproduct of the many-to-one traffic pattern that characterizes most wireless sensor n

Publisher: University of Notre Dame  |  Tags: network

Dynamic Power Management Using Feedback

Dynamic Power Management Using Feedback

The increasing speed and complexity of the microprocessor has brought about a corresponding increase in power consumptio

Publisher: University of Notre Dame  |  Tags: linux, management, microprocessor, os

Short Paper: Troubleshooting Distributed Systems Via Data Mining

Short Paper: Troubleshooting Distributed Systems Via Data Mining

Through massive parallelism, distributed systems enable the multiplication of productivity. Unfortunately, increasing th

Publisher: University of Notre Dame  |  Tags: data, data mining, productivity