Bandwidth Issues - IT Library : ZDNet Asia

White Papers

Case Studies

Vendor Webcast

Show all content

Title Date Added Company

Multiuser Detection for Overloaded CDMA Systems 2006-11-08 01:00:18 Institute of Electrical and Electronics Engineers

Multiuser detection for overloaded CDMA systems, in which the number of users is larger than the dimension of the signal space, is of particular interest when bandwidth is at a premium. In this paper, certain fundamental questions are answered regarding the asymptotic forms and performance of suboptimum multiuser detectors for cases where the desired and/or interfering signal subspaces are of reduced rank and/or have a non-trivial intersection. In the process, two new suboptimum detectors are proposed that are especially well suited to overloaded systems, namely the group pseudo-decorrelator and the group MMSE detector, and the former is seen to be the correct extension of the group decorrelator in the sense that it is the limiting form (in the low-noise regime) of the group MMSE detector.

Bandwidth on Demand Services for European Research and Education Networks 2006-10-31 GARR

The Joint Research Activity 3 of the European project GN2 aims to specify and develop a prototype for a Bandwidth on Demand service destined to operate in a multi-domain environment using heterogeneous transmission technologies. This paper reviews the project's key achievements (general architecture and early prototyping results) and reports on current research and development areas (abstract network description, technology stitching and path finding) with a particular focus on inter-domain issues.

Tags: MPLS

Webcast: Philadelphia's Wireless War 2006-10-25 10:55:43 ZDNet

Philadelphia is looking to be the first major city in the U.S. to provide citywide low-cost broadband access. CIO for the city, Dianah Neff, sits down with ZDNet editor in chief Dan Farber to explain the politics and technology behind the "Wireless Philadelphia" project.

Integrated Network Interfaces for High-Bandwidth TCP/IP 2006-10-21 University of Michigan

This paper proposes new Network Interface Controller (NIC) designs that take advantage of integration with the host CPU to provide increased flexibility for operating system kernel-based performance optimization. The authors believe that this approach is more likely to meet the needs of current and future high-bandwidth TCP/IP networking on end hosts than the current trend of putting more complexity in the NIC, while avoiding the need to modify applications and protocols.

Tags: TCP - IP

Legal Application Throttled by Internet Connection 2006-10-20 Datanet UK

Business growth and the desire for improved efficiency resulted in the adoption of a more comprehensive case management system capable of coping with the increase in complexity and workload. I t quickly became clear that a new connectivity solution was required, one with increased and guaranteed bandwidth. As a longstanding customer, the firm automatically turned to Datanet for advice on their options for a new connectivity solution. Several private circuit scenarios were discussed, including MPLS networks between the sites, E1 and LAN Extensions.

Tags: MPLS

Bridgewater Systems and Allot Communications Help Top-Tier Service Provider Take Control of Peer-to-Peer Challenge 2006-10-13 01:00:15 Bridgewater Systems

The client offers tiered high-speed internet services and strives to guarantee a minimum level of bandwidth for its users. But with the network drain caused by Peer-to-Peer (P2P) and the impact that was having on non-P2P users, the Service Provider was left with two choices for restoring its service levels and reducing operating expenses incurred from the extra stress on bandwidth. One option was to invest capital and operating expenses in building and maintaining more bandwidth in its network - a temporary fix that would simply give P2P users more bandwidth to monopolize. The other option was to look for a way to more efficiently control and manage P2P and other bandwidth-intensive applications on its network. The company chose the latter, and turned to Bridgewater Systems for a solution.

Case Study: Peribit Networks - Flash Product Demonstration 2006-10-13 01:00:15 Busse Design

Peribit Networks, Inc., the developer of patent-pending bandwidth optimization products that dramatically improve Wide-Area Network (WAN) performance, engaged Busse Design to create a Flash presentation that was compelling, illustrative, and technically accurate. Peribit's Molecular Sequence Reduction (MSR) technology marks the first time DNA research techniques have been used to bolster the performance and capacity of IT applications. To ensure accuracy in their portrayal of Peribit's innovative technologies, it was essential for Busse Design to gain an in-depth understanding of the nuances of the products and solutions to be represented.

Modeling the AIADD Paradigm in Networks With Variable Delays 2006-10-13 French National Institute for Research in Computer Science and Control

Modeling TCP is fundamental for understanding Internet behavior. The reason is that TCP is responsible for carrying a huge quota of the Internet traffic. During last decade many analytical models have attempted to capture dynamics and steady-state behavior of standard TCP congestion control algorithms. In particular, models proposed in literature have been mainly focused on finding relationships among the throughput achieved by a TCP flow, the segment loss probability, and the Round Trip Time (RTT) of the connection, which the flow goes through. Recently, Westwood+ TCP algorithm has been proposed to improve the performance of classic New Reno TCP, especially over paths characterized by high bandwidth-delay products.

Tags: TCP - IP

Congestion Control Mechanism of TCP for Achieving Predictable Throughput 2006-10-12 Osaka University

The demand of Internet users for diversified services has increased due to the rapid development of the Internet, and applications requiring QoS guarantee, such as real-time media delivery services, have become popular. The research group has proposed transport-layer approaches to provide such high-level quality of network services. This paper proposes a congestion control mechanism of TCP for achieving predictable throughput. It does not mean one can guarantee the throughput, while one can provide the throughput required by an upper-layer application at high probability when network congestion level is not so high.

Tags: TCP - IP

Network Capacity Planning Saves Money, Improves Performance Across Cisco Systems 2006-10-11 01:00:17 Cisco Systems

Starting in 2000, bandwidth requirements at Cisco Systems began to double every 12 to 18 months, degrading performance on established circuits. Driving bandwidth consumption were voice over IP and video on demand, which share the network with more conventional business applications. Cisco developed a structured process for planning bandwidth requirements - categorizing network traffic as legitimate, inappropriate, or unwise, and setting sizing and utilizing thresholds.

Jump to [11] 12 13 14 15 16 17 18 19 20

Title	Date Added	Company
Multiuser Detection for Overloaded CDMA Systems	2006-11-08 01:00:18	Institute of Electrical and Electronics Engineers
Multiuser detection for overloaded CDMA systems, in which the number of users is larger than the dimension of the signal space, is of particular interest when bandwidth is at a premium. In this paper, certain fundamental questions are answered regarding the asymptotic forms and performance of suboptimum multiuser detectors for cases where the desired and/or interfering signal subspaces are of reduced rank and/or have a non-trivial intersection. In the process, two new suboptimum detectors are proposed that are especially well suited to overloaded systems, namely the group pseudo-decorrelator and the group MMSE detector, and the former is seen to be the correct extension of the group decorrelator in the sense that it is the limiting form (in the low-noise regime) of the group MMSE detector.
Bandwidth on Demand Services for European Research and Education Networks	2006-10-31	GARR
The Joint Research Activity 3 of the European project GN2 aims to specify and develop a prototype for a Bandwidth on Demand service destined to operate in a multi-domain environment using heterogeneous transmission technologies. This paper reviews the project's key achievements (general architecture and early prototyping results) and reports on current research and development areas (abstract network description, technology stitching and path finding) with a particular focus on inter-domain issues. Tags: MPLS
Webcast: Philadelphia's Wireless War	2006-10-25 10:55:43	ZDNet
Philadelphia is looking to be the first major city in the U.S. to provide citywide low-cost broadband access. CIO for the city, Dianah Neff, sits down with ZDNet editor in chief Dan Farber to explain the politics and technology behind the "Wireless Philadelphia" project.
Integrated Network Interfaces for High-Bandwidth TCP/IP	2006-10-21	University of Michigan
This paper proposes new Network Interface Controller (NIC) designs that take advantage of integration with the host CPU to provide increased flexibility for operating system kernel-based performance optimization. The authors believe that this approach is more likely to meet the needs of current and future high-bandwidth TCP/IP networking on end hosts than the current trend of putting more complexity in the NIC, while avoiding the need to modify applications and protocols. Tags: TCP - IP
Legal Application Throttled by Internet Connection	2006-10-20	Datanet UK
Business growth and the desire for improved efficiency resulted in the adoption of a more comprehensive case management system capable of coping with the increase in complexity and workload. I t quickly became clear that a new connectivity solution was required, one with increased and guaranteed bandwidth. As a longstanding customer, the firm automatically turned to Datanet for advice on their options for a new connectivity solution. Several private circuit scenarios were discussed, including MPLS networks between the sites, E1 and LAN Extensions. Tags: MPLS
Bridgewater Systems and Allot Communications Help Top-Tier Service Provider Take Control of Peer-to-Peer Challenge	2006-10-13 01:00:15	Bridgewater Systems
The client offers tiered high-speed internet services and strives to guarantee a minimum level of bandwidth for its users. But with the network drain caused by Peer-to-Peer (P2P) and the impact that was having on non-P2P users, the Service Provider was left with two choices for restoring its service levels and reducing operating expenses incurred from the extra stress on bandwidth. One option was to invest capital and operating expenses in building and maintaining more bandwidth in its network - a temporary fix that would simply give P2P users more bandwidth to monopolize. The other option was to look for a way to more efficiently control and manage P2P and other bandwidth-intensive applications on its network. The company chose the latter, and turned to Bridgewater Systems for a solution.
Case Study: Peribit Networks - Flash Product Demonstration	2006-10-13 01:00:15	Busse Design
Peribit Networks, Inc., the developer of patent-pending bandwidth optimization products that dramatically improve Wide-Area Network (WAN) performance, engaged Busse Design to create a Flash presentation that was compelling, illustrative, and technically accurate. Peribit's Molecular Sequence Reduction (MSR) technology marks the first time DNA research techniques have been used to bolster the performance and capacity of IT applications. To ensure accuracy in their portrayal of Peribit's innovative technologies, it was essential for Busse Design to gain an in-depth understanding of the nuances of the products and solutions to be represented.
Modeling the AIADD Paradigm in Networks With Variable Delays	2006-10-13	French National Institute for Research in Computer Science and Control
Modeling TCP is fundamental for understanding Internet behavior. The reason is that TCP is responsible for carrying a huge quota of the Internet traffic. During last decade many analytical models have attempted to capture dynamics and steady-state behavior of standard TCP congestion control algorithms. In particular, models proposed in literature have been mainly focused on finding relationships among the throughput achieved by a TCP flow, the segment loss probability, and the Round Trip Time (RTT) of the connection, which the flow goes through. Recently, Westwood+ TCP algorithm has been proposed to improve the performance of classic New Reno TCP, especially over paths characterized by high bandwidth-delay products. Tags: TCP - IP
Congestion Control Mechanism of TCP for Achieving Predictable Throughput	2006-10-12	Osaka University
The demand of Internet users for diversified services has increased due to the rapid development of the Internet, and applications requiring QoS guarantee, such as real-time media delivery services, have become popular. The research group has proposed transport-layer approaches to provide such high-level quality of network services. This paper proposes a congestion control mechanism of TCP for achieving predictable throughput. It does not mean one can guarantee the throughput, while one can provide the throughput required by an upper-layer application at high probability when network congestion level is not so high. Tags: TCP - IP
Network Capacity Planning Saves Money, Improves Performance Across Cisco Systems	2006-10-11 01:00:17	Cisco Systems
Starting in 2000, bandwidth requirements at Cisco Systems began to double every 12 to 18 months, degrading performance on established circuits. Driving bandwidth consumption were voice over IP and video on demand, which share the network with more conventional business applications. Cisco developed a structured process for planning bandwidth requirements - categorizing network traffic as legitimate, inappropriate, or unwise, and setting sizing and utilizing thresholds.