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Link Adaptation in OFDM Systems

whitepaper Link Adaptation (LA) is a powerful means of increasing throughput in wireless channels by customizing the transmission rate based on channel state information (CSI) at the transmitter. This paper considers link adaptation in an orthogonal frequency...

Tags: modems, frequency, adaptation, transmission

[10 Apr 2008]

Telecom Broadband: Digital Processor for SDH Radio Link

whitepaper It was intended to implement a radio terminal providing regeneration and adaptation functionality, along with hitless switching capability. A leading worldwide telecommunication network equipment manufacturer needed to design the main digital...

Tags: broadband, radio, verification, switching

[10 Apr 2008]

The Future Optical Control Plane

whitepaper The adaptation of IP routing techniques combined with optical enhancements to Multi-Protocol Label Switching (MPLS) - often known as MPLambdaS is a key mechanism in harnessing powerful hardware capabilities with an intelligent control plane.

Tags: atm, optical, plane, control plane

[10 Apr 2008]

Network Performance Monitoring for Applications Using EXPAND

whitepaper It is important for many applications to be able to estimate system performance in order to select appropriate encoding schemes, adaptation, buffering sizes etc. As computing becomes more interactive and as networked applications need special...

Tags: monitoring systems

[03 Mar 2008]

Gritti Gas Rete Increases Flexibility and Cuts Costs With Virtualization

whitepaper The company has made the choice to outsource the IT infrastructure with the aim of reducing the tasks of its in-house management and system development personnel to a minimum, while keeping a close collaboration relationship with its technological...

Tags: server consolidation

[29 Feb 2008]

Proportional Service Allocation in Distributed Storage Systems

whitepaper It is an adaptation of fair queuing algorithms for distributed servers. Fully distributed storage systems have gained popularity in the past few years because of their ability to use cheap commodity hardware and their high scalability.

Tags: file and network servers

[14 Feb 2008]

About the 10 Gigabit Ethernet Standard

whitepaper The rate adaptation mechanism is known as open loop control. 10 GbE Physical layer specifications (PHY) and supported media and reaches, as defined in IEEE 802.3 2005. In Ethernet standards, the different optical and copper media are known as types...

Tags: ethernet

[07 Feb 2008]

TCP-Friendly Internet Video With Smooth and Fast Rate Adaptation and Network-Aware Error Control

whitepaper First, a new rate adaptation mechanism called the Smooth and Fast Rate Adaptation Mechanism (SFRAM) is developed based on the TCP-throughput equation. SFRAM not only achieves TCP-friendliness but also provides a smooth and fast rate adaptation for...

Tags: tcp - ip

[14 Jan 2008]

Jointly Coordinating ECN and TCP for Rapid Adaptation to Varying Bandwidth

whitepaper The introduction of service differentiation in the Internet implies that the residual bandwidth available to best-effort traffic becomes highly variable. This paper explores the design of a rapidly-reactive congestion control framework, where the...

Tags: switching

[14 Jan 2008]

A New Available Bandwidth Measurement Technique for Service Overlay Networks

whitepaper This algorithm is an adaptation from existing active measurement methods for the purpose of being applied in inline network measurement. This paper introduces a new measurement algorithm for the available bandwidth in a network path between two...

Tags: bandwidth issues

[14 Jan 2008]

Proxy-Based TCP-Friendly Streaming Over Mobile Networks

whitepaper At the same time, TCP-friendly rate-adaptation behavior for streaming will become an important IETF requirement. Mobile media streaming is envisioned to become an important service over packet-switched 2.5G and 3G wireless networks.

Tags: tcp - ip

[14 Jan 2008]

GM Daewoo Lowered Costs and Slashed Six Months Off the Automobile Development Cycle by Boosting Productivity, Collaboration and Knowledge Re-Use With PLM

whitepaper The company streamlined global product development process using PLM technology for quicker adaptation to market trends. GM Daewoo Auto & Technology Co. GM Daewoo) manufactures vehicles, engines and transmissions at four facilities in Korea as well...

Tags: groupware - workflow

[14 Jan 2008]

Understanding TCP's Behavior Over Wireless Links

whitepaper Adaptation of protocols designed for the wired Internet, such as TCP, to wireless specificity and conversely, design of wireless systems adapted to Internet protocol stack is an area of wide interest.

Tags: tcp - ip

[14 Jan 2008]

Semantic Adaptation of Schema Mappings When Schemas Evolve

whitepaper This paper explores the mapping composition approach for addressing this mapping adaptation problem. It studies the semantics of mapping composition in the context of mapping adaptation and compares the approach with the incremental approach of...

Tags: xml

[08 Jan 2008]

TCP Adaptation for MPI on Long-and-Fat Networks

whitepaper Typical MPI applications work in phases of computation and communication, and messages are exchanged in relatively small chunks. This behavior is not optimal for TCP because TCP is designed only to handle a contiguous flow of messages efficiently.

Tags: tcp - ip

[08 Jan 2008]

Collaboration and Multimedia Authoring on Mobile Devices

whitepaper This paper introduces adaptation-aware editing and progressive update propagation, two novel mechanisms that enable authoring multimedia content and collaborative work on mobile devices. Adaptation-aware editing enables editing content that was...

Tags: authoring systems

[08 Jan 2008]

TCP-Aware Resource Allocation in CDMA Networks

whitepaper The work discusses in this paper explores cross-layer optimization of the rate adaptation feature of cellular networks to optimize throughput of a single long-lived TCP session. However, the set of data rates as well as the scheduler's rate...

Tags: tcp - ip

[26 Dec 2007]

Performance Evaluation of TCP/IP Over EDGE

whitepaper The performance of TCP was examined under various channel conditions with and with-out the link adaptation scheme of EGPRS. The link adaptation scheme improves the TCP performance under poor channel conditions.

Tags: tcp - ip

[26 Dec 2007]

An FPGA-Based Network Processor for IP Packet Compression

whitepaper This paper describes the design, implementation, and experimental evaluation of a reconfigurable network processor that can do on-the-fly content adaptation of IP packets for wired or wireless networks.

Tags: tcp - ip

[26 Dec 2007]

How Many Parallel TCP Sessions to Open: A Pricing Perspective

whitepaper Given the discrete (and even finite) space of strategies, we propose to implement a probabilistic adaptation algorithm, analyze its theoretical properties and provide numerical illustrations. TCP is one of the main transmission protocols used in...

Tags: tcp - ip

[26 Dec 2007]

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