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network design
(5125 results)-
White Papers
Model of Emergency Evacuation in Large-Scale Emergency Based on Hub and Spoke Networks
Mar 2012
When there is a need of emergency evacuation once large-scale emergency happens, the operation of road network will become more complicated than usual as traffic flow increases. Considering the...
Provided by AICIT
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White Papers
A Population Evolution Algorithm for Supporting Scalable Virtual Routers
Mar 2012
Algorithms, which can process scalable rule sets of virtual routers on a multiprocessor system, have become a hotspot with the improvement of CPU architecture and virtual networks. Therefore, it...
Provided by AICIT
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White Papers
Precise Time Synchronization in Linear Topology Network Using Transparent Clock
May 2012
Time synchronization accuracy between master clock and slave clock is an important criterion in distributed measurement and control system. IEEE 1588 based time synchronization in network can be...
Provided by AICIT
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White Papers
Development of Intelligent Network Storage System With Adaptive Decision-Making
Feb 2012
An enormous amount of digitization of content has led to extreme demands on storage systems. Multitier storage systems built with parallel distributed file-system enhance their scalability and I/O...
Provided by AICIT
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White Papers
Applying Mashup for Composing Network Management Services
Mar 2012
With the rapid development and expansion of network, network management correspondingly increases complexity and encounters some problems. It forces them to find new technologies to make network...
Provided by AICIT
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White Papers
A Multi-Criteria Fuzzy Decision-Making Method to QoS Multi-Constraints Routing Based on Vague Sets
Mar 2012
The Quality of Service (QoS) requirements for a connection set-up includes a wide range of parameters. There are two major challenges as follows: the first one is to find a path that satisfies all...
Provided by AICIT
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White Papers
P-Recursion Information and Recursion Search Ring-Application
Apr 2012
The aim of this paper is to improve the generated manner of P-sets string to obtain a recursive structure of information. This paper proposes the concept of P-Recursion Information (Packet...
Provided by AICIT
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White Papers
Analytical Research on the Performance of Network Coding Based Probabilistic Routing
Apr 2012
In this paper, the authors establish an analytical model of probabilistic routing, and propose a Network Coding based Probabilistic Routing (NC-PR), in comparison with the traditional...
Provided by AICIT
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White Papers
Algorithm for Minimum Cost Maximum Flow in Transportation Network
Apr 2012
An algorithm named MCMF-A has been proposed to find minimum cost maximum flow in transportation network. The MCMF-A algorithm can find the optimal solution to MCMFP and has good performance, which...
Provided by AICIT
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White Papers
Tagged Unit State Based Ring Buffer
Apr 2012
Ring buffer could increase the concurrency of data processing and balance the non-uniform nature of the data processing, therefore, it is widely used as a trade-off method between network packet...
Provided by AICIT
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White Papers
Improved DyAD Algorithm for Network-on-Chip
May 2012
The paper introduces the familiar XY dimension order routing algorithm, odd-even turn model and the combination of both of them with DyAD algorithm, brings forward an improved algorithm that is...
Provided by AICIT
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White Papers
Improved Intelligent Method for Traffic Flow Prediction Based on Artificial Neural Networks and Ant Colony Optimization
May 2012
Real time traffic flow is often difficult to predict precisely because of the complexity, nonlinearity and uncertainty characteristics of the traffic flow data. Intelligent prediction methods such...
Provided by AICIT
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White Papers
Modeling the Internet Routing Scalability: From Qualitative Description to Quantitative Evaluation
May 2012
The Internet has been growing rapidly during the past few decades. Its routing system may encounter scalability problem as the size of Internet keeps growing. The Internet Research Task Force...
Provided by AICIT
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White Papers
A Novel FPGA-Based Hand Gesture Recognition System
May 2012
There are many applications using hand gesture as a nature control interface, such as human-machine interaction and interactive entertainment. With the advancement of computer vision and machine...
Provided by AICIT
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White Papers
The Characteristics Analysis of Hybrid Bridge Function Sequence in Multiuser UWB Communication System
May 2012
Basing on bridge function sequence and Walsh sequence, a special sequence called hybrid bridge function sequence is obtained. The paper focuses on the analysis of its orthogonal property and cross...
Provided by AICIT
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White Papers
Zigbee-Based Intelligent Classroom Network Simulator That Controls With Smart Phone
Apr 2012
In this paper, variety of ways for the teachers to have easy access to various multimedia contents for teaching by setting up multimedia devices that could replay educational contents as a network...
Provided by AICIT
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White Papers
An Approach to Evaluating the Computer Practice Course Reform Based on Computer Multimedia Network Technique with 2-Tuple Linguistic Information
Apr 2012
In this paper, the authors investigate the multiple attribute decision making problems to deal with evaluation model of computer practice course reform based on computer multi-media network...
Provided by AICIT
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White Papers
Cognitive Networks Congestion Prediction Method Based on Bayesian Networks
Apr 2012
With the rapid expanding of network scale and complexity, the occurrence of network congestion has been increased as well. To avoid network congestion, the authors proposed a cognitive networks...
Provided by AICIT
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White Papers
An Improved Anomaly Detection Method Based on Entropy Analysis for Large Scale Network Using Data Stream Technique
Apr 2012
Entropy-based approaches for anomaly detection are appealing since they provide more fine-grained insights than traditional traffic volume analysis. While previous work has demonstrated the...
Provided by AICIT
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White Papers
Multi-Dimensional Visualization for Network Forensic Analysis
Mar 2012
In an age of communication via the internet, limitations are borderless. The communication over computers is beneficial but can also cause damage to the public and other agencies. The crimes have...
Provided by AICIT
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White Papers
The End-to-End IPv6 Network Available Bandwidth Measurement and Analysis
Mar 2012
In light of the particularities of Internet Protocol version 6 (IPv6) and based on the principles of network bandwidth measurement, an available bandwidth measuring algorithm is proposed with the...
Provided by AICIT
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White Papers
Study of Performance and Mechanism of Sandwich Protection Devices for Bridges
Mar 2012
In the paper, the rectangular column sandwich plate protective device is developed to resist the impact loading without the bridge's damage. And its behavior is studied. The ANSYS/LS-DYNA, which...
Provided by AICIT
-
White Papers
A Novel Relay Selection Scheme in Multi-Relay Cooperative Transmission Network
Mar 2012
In this paper, an improved relay selection scheme is proposed for multi-relay cooperative transmission network. For the proposed scheme, based on the decoding results, the relays that decode...
Provided by AICIT
-
White Papers
Detecting Buffer Overflows Using Adaptive Test Case Generation
Dec 2011
Buffer overflows cause serious problems in different ways of software systems. This paper proposes to combine static analysis and dynamic testing to detect buffer overflows in software. Using...
Provided by AICIT
-
White Papers
Design of a Multi-PC Parallel Rendering Architecture Based on Fast Ethernet
Dec 2011
With the continuous demand for better quality and larger display devices in scientific visualization, virtual reality requirements etc, the limited resolution of single display devices becomes an...
Provided by AICIT
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White Papers
Cooperative Approaches to Spectrum Sensing and Sharing for Cognitive Radio Networks: A Comparative Study
Nov 2011
Cognitive Radio Networks (CRNs) consist of Primary Users (PUs) and Secondary Users (SUs), in which SUs sense the licensed spectrum bands and opportunistically access them without interfering...
Provided by AICIT
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White Papers
Integrated Disaster Alert Network Gateway
Nov 2011
According to complexity of society, disaster has been complicated. Also a variety of disasters including natural, man-made, and social disasters has been happened frequently due to climate changes...
Provided by AICIT
-
White Papers
MIND: A Distributed Multi-Dimensional Indexing System for Network Diagnosis
Jan 2012
Detecting coordinated attacks on Internet resources requires a distributed network monitoring infrastructure. Such an infrastructure will have two logically distinct elements: distributed monitors...
Provided by University of Southern California
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White Papers
ARIADNE: Agnostic Reconfiguration in a Disconnected Network Environment
Aug 2011
Extreme transistor technology scaling is causing increasing concerns in device reliability: the expected lifetime of individual transistors in complex chips is quickly decreasing, and the problem...
Provided by Princeton University
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White Papers
Traffic Merging for Energy-Efficient Datacenter Networks
May 2012
Numerous studies have shown that datacenter networks typically see loads of between 5%-25% but the energy draw of these networks is equal to operating them at maximum load. In this paper, the...
Provided by Portland State University
-
White Papers
Optimization of the Relay Selection Scheme in Cooperative Retransmission Networks
Jan 2012
While the benefits of cooperative diversity have been well studied in the literature, cooperative MAC protocol design has attracted more and more attention recently. In single-relay Cooperative...
Provided by University of Agder
-
White Papers
A New Ray Optical Statistical Model for Multipath Characteristics Pertinent to Indoor Geolocation
May 2009
A ray optics based statistical multipath channel model has been developed to describe the indoor multipath propagation including the important parameters such as path gain, time-of-arrival,...
Provided by Institute of Electrical & Electronic Engineers
-
White Papers
Measurement and Modeling of Ultrawideband TOA-Based Ranging in Indoor Multipath Environments
Mar 2009
In this paper, the authors present the results of the measurement and modeling of UltraWideBand (UWB) Time Of Arrival (TOA)-based ranging in different indoor multipath environments. They provide a...
Provided by Institute of Electrical & Electronic Engineers
-
White Papers
Comparative Evaluation of the Dual Transform Domain Echo Canceller for DMT-Based Systems
Feb 2010
In DMT-based communication systems where full-duplex transmission is required, digital echo cancellers are employed to cancel echo by means of adaptive filters. In order to reduce the...
Provided by McGill University
-
White Papers
Experimental Evaluation of GMPLS Enhanced Routing for Differentiated Survivability in All-Optical Networks
May 2008
Future Intelligent Optical Networks (IONs) are devised to support a wide variety of clients, each having their own reliability requirements, such as availability. These networks thus need to...
Provided by Optical Society of America
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White Papers
Adaptive Reliable Multipath Provisioning in Survivable WDM Mesh Networks
May 2009
The authors investigate the problem of adaptive reliable multipath provisioning in next-generation backbone mesh networks employing optical Wavelength-Division Multiplexing (WDM) and...
Provided by University of California
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White Papers
A Multistate Multipath Provisioning Scheme for Differentiated Failures in Telecom Mesh Networks
Nov 2009
Telecommunication networks spanning large areas are subject to various failures, such as natural disasters, operation errors, and malicious attacks. Disaster Failures (DF) are defined as failures...
Provided by University of California
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White Papers
Survivable Multipath Traffic Grooming in Telecom Mesh Networks With Inverse Multiplexing
Nov 2009
The authors investigate the survivable traffic grooming problem with inverse multiplexing in next-generation SONET/SDH networks employing Wavelength-Division Multiplexing (WDM). With support of...
Provided by University of California
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White Papers
Availability-Aware Provisioning Strategies for Differentiated Protection Services in Wavelength-Convertible WDM Mesh Networks
Mar 2010
In an optical WDM mesh network, different protection schemes (such as dedicated or shared protection) can be used to improve the service availability against network failures. However, in order to...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
On the Benefits of a Fast Heuristic for Backup Reprovisioning in WDM Networks
Oct 2008
In a Wavelength-Division-Multiplexing (WDM) optical network, Backup Reprovisioning (BR) provides a means to improve survivability (by protecting against multiple concurrent potential failures) and...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
Geographic Properties of Internet Routing
Nov 2007
In this paper, the authors study the geographic properties of Internet routing. The work is distinguished from most previous studies of Internet routing in that they consider the geographic path...
Provided by University of California, Berkeley
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White Papers
Early Experience With an Internet Broadcast System Based on Overlay Multicast
Jan 2011
In this paper, the authors report on experience in building and deploying an operational Internet broadcast system based on Overlay Multicast. In over a year, the system has been providing a...
Provided by Carnegie Mellon University
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White Papers
Improving Packet Latency of Video Sensor Networks
Jul 2009
Video sensor networks operate on stringent requirements of latency. Packets have a deadline within which they have to be delivered. Violation of the deadline causes a packet to be treated as lost...
Provided by University of California, Irvine
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White Papers
Scalable Revocation in Hybrid Ad Hoc Networks the SHARL Scheme
Jun 2008
The article proposes a simple, scalable and robust scheme for the distribution of revocation information in mobile ad hoc networks (MANETs). The scheme is intended for ad hoc networks with a...
Provided by Academy Publisher
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White Papers
Escaping from Microsoft's Protected Mode Internet Explorer
Nov 2010
The level of protection offered by Protected Mode Internet Explorer is not well understood and there are common misconceptions about its status as a security feature. This research set out to...
Provided by Verizon
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Whitepapers
Simplify and Streamline Your Active Directory Administration
Jan 2011
Windows Active Directory (AD) is a critical part of your IT infrastructure, and when it comes to AD, the discussion always centers on the big picture topics like security, compliance, auditing,...
Provided by Quest Software, now a part of Dell
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White Papers
A Large-Scale Testbed for Reproducible Ad Hoc Protocol Evaluations
Jan 2011
The authors have built an Ad hoc Protocol Evaluation testbed (APE) in order to perform large-scale, reproducible experiments. APE aims at assessing several different routing protocols in a...
Provided by Uppsala University
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White Papers
IP Network Configuration for Intradomain Traffic Engineering
Nov 2007
The smooth operation of the Internet depends on the careful configuration of routers in thousands of autonomous systems throughout the world. Configuring routers is extremely complicated because...
Provided by AT&T
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White Papers
Networks on Silicon: Blessing or Nightmare?
Nov 2007
Continuing VLSI technology scaling raises several Deep Submicron (DSM) problems like relatively slow interconnect, power dissipation and distribution, and signal integrity. Those problems are...
Provided by Philips
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White Papers
Experience in Measuring Backbone Traffic Variability: Models, Metrics, Measurements and Meaning
Nov 2007
Understanding the variability of Internet traffic in backbone networks is essential to better plan and manage existing networks, as well as to design next generation networks. However, most...
Provided by King Fahd University of Petroleum & Minerals
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White Papers
Design of Fault-Tolerant Logical Topologies in Wavelength-Routed Optical IP Networks
Jan 2011
In this paper the authors illustrate a new methodology for the design of fault-tolerant logical topologies in wavelength-routed optical networks exploiting wavelength division multiplexing, and...
Provided by Politecnico di Torino
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White Papers
The Quantitative Comparison of IP Networks
Mar 2008
The authors propose a new methodology for comparing network traces. This methodology is based on the use of multiple statistical measures on the set of network characteristics, and the...
Provided by University of California
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White Papers
An Analytical Simulator for Deploying IP Telephony
Dec 2008
Deploying IP telephony or Voice over IP (VoIP) is a major and challenging task. This paper describes an analytical design and planning simulator to assess the readiness of existing IP networks for...
Provided by King Fahd University of Petroleum & Minerals
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White Papers
Special Issue: Delay Tolerant Networks, Architecture, and Applications
Feb 2010
Delay-Tolerant Networking (DTN) enables communication in sparse mobile ad-hoc networks and other challenged environments where traditional networking fails and new routing and application...
Provided by Academy Publisher
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Case Studies
CMC Case Study: Central Bank of India
Mar 2010
Central Bank of India is a major nationalised public sector bank with more than 3000 branches across India. The bank had an outdated IT network in place and had distributed IT infrastructure with...
Provided by CMC
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White Papers
Deploying VoIP in Existing IP Networks
Jan 2008
Many network managers find it attractive and cost effective to merge and unify voice and data networks. A unified network is easier to run, manage, and maintain. However, the majority of today's...
Provided by King Fahd University of Petroleum & Minerals
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White Papers
Paving the Way to Next Generation Media and Signaling VoIP Gateways
Dec 2008
VoIP is changing quickly with the rapid adoption of SIP and the distribution of network elements. As VoIP evolves, connectivity between different signaling protocols, conversion between voice...
Provided by Dialogic
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White Papers
Testing the Limits: Enterprise Network Management, Testing and Evaluation
Jun 2008
Effective testing and evaluation can significantly improve enterprise network management, which in turn can positively impact a company's day-to-day operations and financial performance. After a...
Provided by Gambit Communications
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White Papers
SWAT: Enabling Wireless Network Measurements
Nov 2008
Measuring low-level wireless network properties allows researchers to understand how protocols and applications perform in different environments. In this demo, the authors present SWAT - a...
Provided by Association for Computing Machinery
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White Papers
Data Center Design - IP Network Infrastructure
Oct 2009
The Cisco Data Center 3.0 architecture is built on the concept of investment protection, allowing incremental integration of new technologies and platforms into the existing infrastructure to meet...
Provided by Cisco Systems
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White Papers
Redundancy and Distributed Caching in Mobile DTNs
Aug 2007
Delay Tolerant Networking (DTN) allows endpoints to exchange information in networks where end-to-end path may not exist at any given time. In this opportunistic model, routing and forwarding...
Provided by Association for Computing Machinery
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White Papers
A Better Constant-Factor Approximation for Weighted Dominating Set in Unit Disk Graph
Mar 2008
This paper presents a (10 + å)-approximation algorithm to compute minimum-weight connected dominating set (MWCDS) in unit disk graph. MWCDS is to select a vertex subset with minimum weight for a...
Provided by Springer Science+Business Media
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White Papers
A PTAS for Minimum Connected Dominating Set in 3-Dimensional Wireless Sensor Networks
Dec 2008
When homogeneous sensors are deployed into a three-dimensional space instead of a plane, the mathematical model for the sensor network is a unit ball graph instead of a unit disk graph. It is...
Provided by Springer Science+Business Media
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White Papers
Using Prime Numbers for Cache Indexing to Eliminate Conflict Misses
Jan 2011
Using alternative cache indexing/hashing functions is a popular technique to reduce conflict misses by achieving a more uniform cache access distribution across the sets in the cache. Although...
Provided by North Carolina State University
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White Papers
Power Efficient Traffic Grooming in Optical WDM Networks
Aug 2009
Power-awareness in networking attracts more attention as the trends in the energy consumption of the Internet raise growing concerns about the environmental impacts and sustainability of the...
Provided by North Carolina State University
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White Papers
A Dynamic Recursive Unified Internet Design (DRUID)
Dec 2010
The Dynamic Recursive Unified Internet Design (DRUID) is a future Internet design that unifies overlay networks with conventional layered network architectures. DRUID is based on the fundamental...
Provided by Reed Elsevier
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White Papers
Guidelines for Industrial Ethernet Infrastructure Implementation: A Control Engineer's Guide
Jul 2010
As part of a continuing effort to make their organizations more efficient and flexible, manufacturers are rapidly migrating to Industrial Ethernet technology to network their industrial automation...
Provided by Cisco Systems
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White Papers
Network Virtualization-Path Isolation Design Guide
Feb 2009
Network virtualization provides multiple solutions to business problems and drivers that range from simple to complex. Simple scenarios include enterprises that want to provide Internet access to...
Provided by Cisco Systems
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White Papers
The Virtual Network Scheduling Problem for Heterogeneous Network Emulation Testbeds
Oct 2009
Network testbeds such as Emulab and the Open Network Laboratory use virtualization to enable users to define end user virtual networks within a shared substrate. This involves mapping users'...
Provided by Washington University in St. Louis
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White Papers
Design of an Extensible Network Testbed
Jun 2010
Networking testbeds have become an increasingly important part of the networking research cycle. One of the primary reasons for this is that testbeds offer researchers access to network conditions...
Provided by Washington University in St. Louis
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White Papers
NVP2P: Network Virtualization From Peer-to-Peer Perspective
May 2008
Separation of policy from mechanism is a well-known principle in computing literature. Network virtualization reincarnates this very concept in the context of networking architecture. But most of...
Provided by University of Waterloo
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White Papers
A Unified Software Architecture to Enable Cross-Layer Design in the Future Internet
Sep 2007
While research on cross-layer network optimization has been progressing, useful implementations have been lagging because the current Internet architecture does not accommodate cross-layering...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Estimating Hop Distance Between Arbitrary Host Pairs
Jan 2009
Establishing a clear and timely picture of Internet topology is complicated by many factors including the vast size and dynamic nature of the infrastructure. In this paper, the authors describe a...
Provided by University of Wisconsin
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White Papers
Router Primitives for Programmable Active Measurement
Aug 2009
Active probe-based measurements are the foundation for understanding important network path properties such as SLA compliance and available bandwidth. Well-known challenges in active probe-based...
Provided by Association for Computing Machinery
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White Papers
Loss-Aware Network Coding for Unicast Wireless Sessions: Design, Implementation, and Performance Evaluation
Jun 2008
Local network coding is growing in prominence as a technique to facilitate greater capacity utilization in multi-hop wireless networks. A specific objective of such local network coding techniques...
Provided by Association for Computing Machinery
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White Papers
Provisioning a Virtual Private Network: A Network Design Problem for Multicommodity Flow
Jul 2008
Consider a setting in which a group of nodes, situated in a large underlying network, wishes to reserve bandwidth on which to support communication. Virtual Private Networks (VPNs) are services...
Provided by Cornell University
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White Papers
BasisDetect : A Model-Based Network Event Detection Framework
Nov 2010
The ability to detect unexpected events in large networks can be a significant benefit to daily network operations. A great deal of work has been done over the past decade to develop effective...
Provided by Association for Computing Machinery
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White Papers
Toward the Practical Use of Network Tomography for Internet Topology Discovery
Dec 2009
Accurate and timely identification of the router-level topology of the Internet is one of the major unresolved problems in Internet research. Topology recovery via tomographic inference is...
Provided by University of Wisconsin
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White Papers
An Active Approach to Measuring Routing Dynamics Induced by Autonomous Systems
Jun 2007
The authors present an active measurement study of the routing dynamics induced by AS-path prepending, a common method for controlling the inbound traffic of a multi-homed ISP. Un-like other...
Provided by Hong Kong Polytechnic University
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White Papers
Agyaat: Providing Mutually Anonymous Services Over Structured P2P Networks
Jan 2011
In the modern era of ubiquitous computing, privacy is one of the most critical user concerns. To prevent their privacy, users typically, try to remain anonymous to the service provider. This is...
Provided by Georgia Institute of Technology
-
White Papers
Study of Performance and Mechanism of Sandwich Protection Devices for Bridges
Mar 2012
In the paper, the rectangular column sandwich plate protective device is developed to resist the impact loading without the bridge's damage. And its behavior is studied. The ANSYS/LS-DYNA, which...
Provided by AICIT
-
White Papers
A Novel Relay Selection Scheme in Multi-Relay Cooperative Transmission Network
Mar 2012
In this paper, an improved relay selection scheme is proposed for multi-relay cooperative transmission network. For the proposed scheme, based on the decoding results, the relays that decode...
Provided by AICIT
-
White Papers
Detecting Buffer Overflows Using Adaptive Test Case Generation
Dec 2011
Buffer overflows cause serious problems in different ways of software systems. This paper proposes to combine static analysis and dynamic testing to detect buffer overflows in software. Using...
Provided by AICIT
-
White Papers
Design of a Multi-PC Parallel Rendering Architecture Based on Fast Ethernet
Dec 2011
With the continuous demand for better quality and larger display devices in scientific visualization, virtual reality requirements etc, the limited resolution of single display devices becomes an...
Provided by AICIT
-
White Papers
Cooperative Approaches to Spectrum Sensing and Sharing for Cognitive Radio Networks: A Comparative Study
Nov 2011
Cognitive Radio Networks (CRNs) consist of Primary Users (PUs) and Secondary Users (SUs), in which SUs sense the licensed spectrum bands and opportunistically access them without interfering...
Provided by AICIT
-
White Papers
Integrated Disaster Alert Network Gateway
Nov 2011
According to complexity of society, disaster has been complicated. Also a variety of disasters including natural, man-made, and social disasters has been happened frequently due to climate changes...
Provided by AICIT
-
White Papers
MIND: A Distributed Multi-Dimensional Indexing System for Network Diagnosis
Jan 2012
Detecting coordinated attacks on Internet resources requires a distributed network monitoring infrastructure. Such an infrastructure will have two logically distinct elements: distributed monitors...
Provided by University of Southern California
-
White Papers
ARIADNE: Agnostic Reconfiguration in a Disconnected Network Environment
Aug 2011
Extreme transistor technology scaling is causing increasing concerns in device reliability: the expected lifetime of individual transistors in complex chips is quickly decreasing, and the problem...
Provided by Princeton University
-
White Papers
Traffic Merging for Energy-Efficient Datacenter Networks
May 2012
Numerous studies have shown that datacenter networks typically see loads of between 5%-25% but the energy draw of these networks is equal to operating them at maximum load. In this paper, the...
Provided by Portland State University
-
White Papers
Optimization of the Relay Selection Scheme in Cooperative Retransmission Networks
Jan 2012
While the benefits of cooperative diversity have been well studied in the literature, cooperative MAC protocol design has attracted more and more attention recently. In single-relay Cooperative...
Provided by University of Agder
-
White Papers
A New Ray Optical Statistical Model for Multipath Characteristics Pertinent to Indoor Geolocation
May 2009
A ray optics based statistical multipath channel model has been developed to describe the indoor multipath propagation including the important parameters such as path gain, time-of-arrival,...
Provided by Institute of Electrical & Electronic Engineers
-
White Papers
Measurement and Modeling of Ultrawideband TOA-Based Ranging in Indoor Multipath Environments
Mar 2009
In this paper, the authors present the results of the measurement and modeling of UltraWideBand (UWB) Time Of Arrival (TOA)-based ranging in different indoor multipath environments. They provide a...
Provided by Institute of Electrical & Electronic Engineers
-
White Papers
Comparative Evaluation of the Dual Transform Domain Echo Canceller for DMT-Based Systems
Feb 2010
In DMT-based communication systems where full-duplex transmission is required, digital echo cancellers are employed to cancel echo by means of adaptive filters. In order to reduce the...
Provided by McGill University
-
White Papers
Experimental Evaluation of GMPLS Enhanced Routing for Differentiated Survivability in All-Optical Networks
May 2008
Future Intelligent Optical Networks (IONs) are devised to support a wide variety of clients, each having their own reliability requirements, such as availability. These networks thus need to...
Provided by Optical Society of America
-
White Papers
Adaptive Reliable Multipath Provisioning in Survivable WDM Mesh Networks
May 2009
The authors investigate the problem of adaptive reliable multipath provisioning in next-generation backbone mesh networks employing optical Wavelength-Division Multiplexing (WDM) and...
Provided by University of California
-
White Papers
A Multistate Multipath Provisioning Scheme for Differentiated Failures in Telecom Mesh Networks
Nov 2009
Telecommunication networks spanning large areas are subject to various failures, such as natural disasters, operation errors, and malicious attacks. Disaster Failures (DF) are defined as failures...
Provided by University of California
-
White Papers
Survivable Multipath Traffic Grooming in Telecom Mesh Networks With Inverse Multiplexing
Nov 2009
The authors investigate the survivable traffic grooming problem with inverse multiplexing in next-generation SONET/SDH networks employing Wavelength-Division Multiplexing (WDM). With support of...
Provided by University of California
-
White Papers
Availability-Aware Provisioning Strategies for Differentiated Protection Services in Wavelength-Convertible WDM Mesh Networks
Mar 2010
In an optical WDM mesh network, different protection schemes (such as dedicated or shared protection) can be used to improve the service availability against network failures. However, in order to...
Provided by Institute of Electrical & Electronic Engineers
-
White Papers
On the Benefits of a Fast Heuristic for Backup Reprovisioning in WDM Networks
Oct 2008
In a Wavelength-Division-Multiplexing (WDM) optical network, Backup Reprovisioning (BR) provides a means to improve survivability (by protecting against multiple concurrent potential failures) and...
Provided by Institute of Electrical & Electronic Engineers
-
White Papers
A Devs-Based Framework for Simulation Optimization: Case Study of Link-11 Gateway Parameter Tuning
Sep 2008
Discrete EVent System Specifications (DEVS) is a mathematical formalism based on system theoretic principles, which has evolved with state-of-technologies implementation over the past few decades....
Provided by Institute of Electrical & Electronic Engineers
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White Papers
A New Model for the Simulation of the LTE-EPC Data Plane
Mar 2012
The authors present a new simulation model for ns-3 aimed at the simulation of the data plane of LTE-EPC networks. Built on their prior work that dealt mainly with the PHY, MAC and Scheduler...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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White Papers
Energy Harvesting Communication System With Battery Constraint and Leakage
Sep 2011
A point-to-point communication system, in which the transmitter is able to harvest energy from its environment, is considered. Energy harvesting is modeled as the packetized or continuous arrival...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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White Papers
Energy-Efficient Data Collection in WSN With Network Coding
Feb 2012
The authors consider the application of a network coding scheme in WSN (Wireless Sensor Networks) for robustness. The use of network coding in WSN is evaluated in terms of reliability improvement,...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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White Papers
Joint Source-Channel Coding for the Multiple-Access Relay Channel
Jun 2012
Reliable transmission of arbitrarily correlated sources over Multiple-Access Relay Channels (MARCs) and Multiple-Access Broadcast Relay Channels (MABRCs) is considered. In MARCs, only the...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Enhanced Low-Complexity Detector Design for Embedded Cyclostationary Signatures
Nov 2011
This paper presents a novel cyclostationary signature detector designed for robust detection of embedded signatures under frequency-selective fading conditions. Cyclostationary signatures are...
Provided by University of Dublin
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Whitepapers
Advanced Interference Mitigation Techniques for the Forward Link of Multi-Beam Broadband Satellite Systems
Nov 2011
Next generation high throughput satellite communication systems are expected to rely on the deployment of a high number of beams in the link between the satellite and the User Terminals (UTs),...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Two-Hop Communication With Energy Harvesting
Sep 2011
Communication nodes with the ability to harvest energy from the environment have the potential to operate beyond the timeframe limited by the finite capacity of their batteries; and accordingly,...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
A Practical Physical-Layer Network Coding Scheme for the Uplink of the Two-Way Relay Channel
Nov 2011
In this paper, the authors consider the two-way relay channel with the two-phase protocol. In the first phase, two terminals simultaneously transmit their packets to the relay, creating a...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Design of a Unified Multimedia-Aware Framework for Resource Allocation in LTE Femtocells
Nov 2011
In future 4G communication networks, it is expected that most of the bandwidth will be used to serve multimedia applications. Thus, there is a need for scheduling mechanisms, which can manage...
Provided by Association for Computing Machinery
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Whitepapers
Network-Coded Cooperative Extension of Link Level FEC in DVB-SH
Oct 2011
In this paper, the authors propose a cooperative ad-hoc networking approach which leverages on Network Coding (NC) for enhancing coverage in Digital Video Broadcasting - Satellite Handheld...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Prototyping With SDR: A Quick Way to Play With Next-Gen Communications Systems
Jun 2011
In the past, real-world prototyping of communication systems were not very common due to high financial costs and long development times derived from the use of dedicated HardWare (HW) such as...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Recent Advances in Reconfigurable Microwave Filters
Sep 2011
In today´s communication systems the demand for tunable filters with high performance and with independent control of the filter parameters has been growing. In this paper an overview of several...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Source-Channel Coding for the Multiple-Access Relay Channel
Nov 2011
This paper considers reliable transmission of general correlated sources over the Multiple-Access Relay Channel (MARC) and the Multiple-Access Broadcast Relay Channel (MABRC). In MARCs only the...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
A Dynamic Path Computation Algorithm for E2e Dedicated Protection in a GMPLS Controlled Multilayer (Ethernet/WSON) Network
Jul 2011
In this paper, the authors focus on end-to-end (e2e) 1+1 dedicated path protection in a Connection-Oriented (CO) Ethernet over Wavelength Switched Optical Network (WSON) controlled by a unified...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
An Open Source Product-Oriented LTE Network Simulator Based on Ns-3
Nov 2011
In this paper, the authors present a new simulation module for ns-3 aimed at the simulation of LTE networks. This module has been designed with a product-oriented perspective in order to allow LTE...
Provided by Association for Computing Machinery
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Whitepapers
Femtocell Systems With Self Organization Capabilities
Jul 2011
In this paper, the authors present a self-organization technique to manage interference in femtocell networks. They model femtocells as a multiagent system implementing a form of Reinforcement...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Frequency Domain Joint TOA and DOA Estimation in IR-UWB
Oct 2011
This paper addresses the problem of TOA and DOA estimation in IR-UWB systems. It considers a frequency domain approach for joint high resolution estimation of Time Of Arrival (TOA) and Direction...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Dynamic Distributed Spectrum Allocation in GMPLS Controlled Elastic Optical Networks
Apr 2011
The authors propose and experimentally evaluate a distributed spectrum assignment approach for GMPLS-controlled elastic networks based on collecting the frequency slot availability information...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Experimental Evaluation of a Full-Meshed Domain Abstraction Design Model for Reduced State Information Dissemination in Multi-Domain PCE-Based WSONs
Jan 2012
A novel full-meshed domain abstraction model for scalable state information in PCE-based WSONs is presented. The authors experimentally evaluate the state information update reduction and the...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Experimental Investigation of PCE-Based Path Computation for OSNR-Aware Dynamic Restoration in GMPLS-Enabled Multi-Domain Translucent WSON
Apr 2011
The authors experimentally demonstrate PCE-based path computation for OSNR-aware dynamic restoration in GMPLS-enabled multi-domain translucent WSON, assessing the overall feasibility and...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
