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bandwidth estimation

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Bandwidth Estimation: Metrics, Measurement Techniques, and Tools: In a packet network, the terms "Bandwidth" or "Throughput" often characterize the amount of data that the network can transfer per unit of time. Bandwidth estimation is of interest to users wishing to optimize end-to-end transport performance, overlay network routing, and peer-to-peer file distribution. Techniques for accurate bandwidth estimation are...; Tags: Technique, Georgia Institute Of Technology, Tool, Bandwidth Estimation, Productivity; White papers 2008-01-01
Fast End-to-End Available Bandwidth Estimation for Real-Time Multimedia Networking: Dynamic bandwidth estimation serves as an important basis for performance optimization of real-time distributed multimedia applications. The objective of this paper is to develop a bandwidth estimation algorithm for the fast fluctuated Internet. This paper analyzes the relationship between the one way delay and the dispersion of packets train, and...; Tags: Multimedia, National Chiao Tung University, Bandwidth Estimation, Engineering; White papers 2006-07-07

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A Min-Plus System Interpretation of Bandwidth Estimation: Significant research has been dedicated to methods that estimate the available bandwidth in a network from traffic measurements. While estimation methods abound, less progress has been made on achieving a foundational understanding of the bandwidth estimation problem. This paper develops a min-plus system theoretic formulation of bandwidth estimation. The paper...; Tags: Network, University Of Toronto, Networking; White papers 2007-01-17
Very Fast Optimal Bandwidth Selection for Univariate Kernel Density Estimation: Most automatic bandwidth selection procedures for kernel density estimates require estimation of quantities involving the density derivatives. Estimation of modes and inflexion points of densities also require derivative estimates. The computational complexity of evaluating the density derivative at M evaluation points given N sample points from the density is OMN....; Tags: Estimation, Engineering, Financial Services; White papers 2005-12-20
Laboratory-Based Calibration of Available Bandwidth Estimation Tools: Examining the validity or accuracy of proposed available bandwidth estimation tools remains a challenging problem. A common approach consists of evaluating a newly developed tool using a combination of simple ns-type simulations and feasible experiments in situ (i.e., using parts of the actual Internet). This paper argues that this strategy...; Tags: Tool, University Of Wisconsin-Madison, Productivity; White papers 2006-11-14

A Two-Stage Plug-in Bandwidth Selection and Its Implementation for Covariance Estimation: The two most popular bandwidth choice rules for kernel HAC estimation have been proposed by Andrews (1991) and Newey and West (1994). This paper suggests an alternative approach that estimates an unknown quantity in the optimal bandwidth for the HAC estimator called normalized curvature using a general class of kernels,...; Tags: Estimation, Bandwidth, Kernel, Concordia University; White papers 2008-06-01
Comparison of Available Bandwidth Estimation Techniques in Packet-Switched Mobile Networks: The relative contribution of the transport network towards the per-user capacity in mobile telecommunication systems is becoming very important due to the ever increasing air-interface data rates. Thus, resource management procedures such as admission, load and handover control can make use of information regarding the available bandwidth in the transport...; Tags: Estimation, Technique, Bandwidth, IEEE, Productivity, Telephony, Telecom & Utilities, Telecommunications, Networking; White papers 2006-06-12
Measuring End-to-End Bandwidth With Iperf Using Web100: End-to-end bandwidth estimation tools like Iperf though fairly accurate are intrusive. This paper describes how with an instrumented TCP stack (Web100), one can estimate the end-to-end bandwidth accurately, while consuming significantly less network bandwidth and time. The paper modified Iperf to use Web100 to detect the end of slow-start and...; Tags: Bandwidth, Network, Stanford University, Tcp/Ip, Networking; White papers 2008-01-01
An Efficient Host-to-Host Available Bandwidth Estimation Scheme: This paper takes an initiative from TOPP and SLoPS and its essence is to reduce the number of probing and error inherent in estimating the available bandwidth along a network path. This paper aims at proposing an algorithm for estimating available bandwidth with shorter measurement latency. The method that is...; Tags: Algorithm, Bandwidth, Engineering; White papers 2006-06-27
Using Packet Probes for Available Bandwidth Estimation: A Wireless Testbed Experience: Evaluating available bandwidth estimation methods requires a malleable MAC protocol implementation, precise MAC layer packet timing measurements, and the ability to create control topologies in laboratory setups so that not all nodes are within communication range. To address these challenges, it have exploited IEEE 802.11e-derived features to obtain more control...; Tags: MAC, Wireless; White papers 2006-09-29
A Bayesian Approach to Bandwidth Selection for Multivariate Kernel Regression With an Application to State-Price Density Estimation: Multivariate kernel regression is an important tool for investigating the relationship between a response and a set of explanatory variables. It is generally accepted that the performance of a kernel regression estimator largely depends on the choice of bandwidth rather than the kernel function. This nonparametric technique has been employed...; Tags: Bandwidth, Bayesian, Multivariate Kernel Regression, Kernel Regression; White papers 2007-11-01
Project Estimation: The CS/10,000 project estimation tool suite allows you to generate, manage, and validate estimates of effort for a wide variety of projects. The estimation method uses proprietary AI technology to provide both task and effort based estimation for your project.; Tags: Estimation, Client-server, Tool, Productivity, Servers, Hardware; White papers
pathChirp: Efficient Available Bandwidth Estimation for Network Paths: This paper presents pathChirp, a new active probing tool for estimating the available bandwidth on a communication network path. Based on the concept of "Self-induced congestion," pathChirp features an exponential flight pattern of probes one calls a chirp. Packet chips offer several significant advantages over current probing schemes based on...; Tags: Estimation, Rice University, Bandwidth, Network, pathChirp, Networking; White papers 2008-01-01
Bandwidth Estimation and Robust Video Streaming Over 802.11e Wireless LANs: Streaming high quality Audio/Video AV from home media sources to TV sets over a Wireless Local Area Network WLAN is a challenging problem because of the fluctuating bandwidth caused by interference. The approach discussed in this paper is to adjust the video bit-rate dynamically in order to improve the experienced...; Tags: Estimation, Georgia Institute Of Technology, Bandwidth, QoS, Streaming Video, WLAN, LANs, Web Site Development, Wireless LANs, Web Technology, Digital Video, Wi-Fi, Wireless, Networking, Internet, Personal Technology; White papers 2005-04-30
Use Case Based Estimation: For the average develop manager who often do not have the time and resources to do a proper function point count or other estimation this paper offers a basic estimation method using a use case based approach. This idiot's guide to the idiot's guide of estimation is a quick approach...; Tags: Estimation, Use Case, Software Development, Software/Web Development; White papers
Estimation of RTT and Bandwidth for Congestion Control Applications in Communication Networks: Heterogeneous communication networks with their variety of application demands, uncertain time-varying traffic load, and mixture of wired and wireless links pose several challenging problem in modeling and control. This paper focuses on the Round-Trip Time RTT, which is a particularly important variable for efficient end-to-end congestion control, and on bandwidth...; Tags: Estimation, Algorithm, Bandwidth, Network, Congestion, RTT, Engineering, Networking; White papers 2007-08-04
A Preliminary Checklist for Software Cost Management: This paper presents a process framework and a preliminary checklist for software cost management. While most textbooks and research papers on cost estimation look mainly at the "Estimation" phase, this framework and checklist includes the phases relevant to estimation: "Preparation", "Estimation", "Application", and "Learning". The authors believe that cost estimation...; Tags: Software, Estimation, Checklist, Managerial Accounting, Tools & Techniques, Finance, Management; White papers 2003-06-30
Enhanced Westwood+ TCP for Wireless/Heterogeneous Networks: Westwood/Westwood+ TCP is well known by its effective AIAD Additive Increase and Adaptive Decrease bandwidth estimation algorithm. This paper proposes an enhanced Westwood+ scheme for wireless/heterogeneous networks with a high random bit error rate BER, in which the sender is introduced with the following three characteristics: to consider the impact...; Tags: Westwood/Westwood+ TCP, Tcp/Ip, Wi-Fi, Engineering, Wireless, Networking; White papers 2006-06-18
Estimation of Carrier-Frequency Offset and Frequency-Selective Channels in MIMO OFDM Systems Using a Common Training Signal: This paper presents a common training signal design and corresponding estimation methods for carrier frequency offset and frequency-selective channels in MIMO OFDM systems. In designing the common training signal, a training signal structure which yields low complexity estimation methods is developed while the optimality of the training signal is maintained....; Tags: Estimation, Training, MIMO-OFDM, Estimation Method, Workforce Management, Human Resources; White papers 2004-09-13
TCP Westwood: Bandwidth Estimation for Enhanced Transport Over Wireless Links: TCP Westwood TCPW is a sender-side modification of the TCP congestion window algorithm that improves upon the performance of TCP Reno in wired as well as wireless networks. The improvement is most significant in wireless networks with lossy links, since TCP Westwood relies on end-to-end bandwidth estimation to discriminate the...; Tags: Improvement, TCP, Wireless, Tcp/Ip, Networking; White papers 2007-01-01

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