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bandwidth issues
(2758 results)-
White Papers
Node Localization Through Physical Layer Network Coding: Bootstrap, Security, and Accuracy
Apr 2012
Previous research on Physical-layer Network Coding (PNC) focuses on the improvements in bandwidth usage efficiency. Its capability to assist wireless nodes in localization was first discussed. In...
Provided by Reed Elsevier
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White Papers
Analysis and Performance Study for Coordinated Hierarchical Cache Placement Strategies
Jun 2010
Data caching has been shown to be efficient in reducing network bandwidth consumption and accelerating information access. In a caching system, an important issue is coordinating data placement to...
Provided by Reed Elsevier
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White Papers
A New Scheme for Minimizing Malicious Behavior of Mobile Nodes in Mobile Ad Hoc Networks
Aug 2009
The performance of Mobile Ad hoc NETworks (MANET) depends on the cooperation of all active nodes. However, supporting a MANET is a cost-intensive activity for a mobile node. From a single mobile...
Provided by University of Bridgeport
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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
Design of a Broadband CPW-Fed Monopole Antenna for WLAN Operations
Jan 2011
In this paper, a novel broadband design of a Co-Planar Waveguide (CPW)-fed planar monopole antenna with double plus shape slots is proposed. The design considerations for achieving broadband...
Provided by MIT Publications
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White Papers
Interrupt Based Switching for Multi-Cluster FlexRay Systems
May 2012
This paper deals with a new straightforward approach to significantly increase the bandwidth usage in FlexRay networks. The authors propose a new hardware component, termed FlexWay that...
Provided by MIT Publications
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White Papers
An Enhanced Data-Reduction Algorithm for Event-Triggered Networks
Jul 2009
As functionality of vehicles increases in complexity, the demand on the in-vehicle networks increases as well. Maximum bus utilization often becomes the communication bottleneck. One way to...
Provided by Institute of Electrical & Electronic Engineers
-
White Papers
Drivers' Anonymity With a Short Message Length for Vehicle-to-Vehicle Communications Network
Dec 2007
In this paper, the authors propose a broadcast protocol to preserve drivers' anonymity in Vehicle-To-Vehicle (V2V) communications network using the keyed-Hash Message Authentication Code (HMAC)....
Provided by Institute of Electrical & Electronic Engineers
-
White Papers
One-Tap Equalizer for Perfect Reconstruction DFT Filter Bank Transceivers
Jun 2009
In this paper, the authors investigate a simple equalization method for DFT filter bank transceivers. They assume the presence of Perfect Reconstruction (PR) DFT filter banks and make use of this...
Provided by Institute of Electrical & Electronic Engineers
-
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
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
RF MEMS Suspended Band-Stop Resonator and Filter for Frequency and Bandwidth Continuous Fine Tuning
Dec 2011
Tunable band-stop resonators are the building block to produce tunable band-stop filters that can play an important role in wireless communication receivers. The authors can be used in adaptable...
Provided by IOP Publishing
-
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
-
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)
-
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
-
Whitepapers
Mirror on the Ceiling: Flexible Wireless Links for Data Centers
Jun 2012
Modern data centers are massive, and support a range of distributed applications across potentially hundreds of server racks. As their utilization and bandwidth needs continue to grow, traditional...
Provided by Association for Computing Machinery
-
Whitepapers
Modeling In-Network Aggregation in VANETs
Nov 2011
The multitude of applications envisioned for Vehicular Ad-hoc NETworks (VANETs) requires efficient communication and dissemination mechanisms to prevent network congestion. In-network data...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
On the Potential of Generic Modeling for VANET Data Aggregation Protocols
Dec 2011
In-network data aggregation is a promising communication mechanism to reduce bandwidth requirements of applications in Vehicular Ad-hoc NETworks (VANETs). Many aggregation schemes have been...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Strictly Localized Sensor Self-Deployment for Optimal Focused Coverage
Nov 2011
Sensor self-deployment is an important research issue that deals with autonomous coverage formation in Mobile Sensor Networks (MSN). Relevant research is still on its initial stage, with emerging...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Real-Time Scheduling in LTE for Smart Grids
Feb 2012
The latest wireless network, 3GPP Long Term Evolution (LTE), is considered to be a promising solution for smart grids because it provides both low latency and large bandwidth. However, LTE was not...
Provided by KTH - Royal Institute of Technology
-
Whitepapers
A Flexible and Reliable Architecture for Mobile Agent Security
Apr 2009
Wireless application protocol is a protocol that makes it possible to surf the Internet from a cellular phone or other handheld wireless. Many of them that surf the Internet from home with a 56...
Provided by Science Publications
-
Whitepapers
Opportunistic Sampling for Random Field Estimation With M2M Capillary Networks
Nov 2010
In this paper, the authors address the problem of the estimation of spatial random fields from the samples collected by a number of sensing devices in a capillary M2M network. In order to preserve...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
-
Whitepapers
Optimal Network Size and Encoding Rate for Wireless Sensor Network-Based Decentralized Estimation Under Power and Bandwidth Constraints
Apr 2011
In this paper, the authors address the problem of decentralized parameter estimation via Wireless Sensor Networks (WSNs). They consider two different encoding strategies, namely,...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Optimal Dimensioning of Sensor Networks for Spatial Field Estimation With Random Sampling
Feb 2011
In this paper, the authors address the problem of the estimation of a two-dimensional spatial field (e.g. atmospheric pressure) with a wireless sensor network. They assume that the field is...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
-
Whitepapers
Lab Trial of a GMPLS Controlled MPLS-TP Packet Transport Network With Source/PCE Path Computations
Jul 2011
A lab trial validating the implemented GMPLS control plane for MPLS-TP in the ADRENALINE testbed is presented. The authors experimentally compare the establishment of bidirectional LSPs using...
Provided by Optical Society of America
-
Whitepapers
Superconducting Multiplexer Filter Bank for a Frequency-Selective Power Limiter
Dec 2010
This paper proposes a superconducting multiplexer filter bank configuration to be used as a frequency-selective power limiter. The proposed configuration limits narrowband high-power signals...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Cooperative Satellite to Land Mobile Gap-Filler-Less Interactive System Architecture
Sep 2010
Considerable efforts are being made in the area of interactive satellite broadcast services to mobiles, which range from the development of specific communication standards to the realization of...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
UWB Receiver Based on Microwave Filter-Bank
Mar 2010
In this paper, the authors propose a sampling stage based on a bank of microwave filters for an Ultra-WideBand (UWB) receiver. The objective of the proposed frequency domain sampling scheme is to...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Passive Devices for UWB Systems
Sep 2010
The release from the U.S. Federal Communication Commission (FCC) of the unlicensed use of the Ultra-Wide-Band (UWB) frequency range of 3.1-10.6 GHz, fed the interest for developing communication...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
On the Energy Efficiency of Centralized and Decentralized Management for Reservation-Based Networks
Jan 2012
Reducing the energy consumption of wired networks has become a key concern for manufacturers of network equipment and network providers. In this paper, the authors propose an energy-efficient data...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Retransmission-Based Available Bandwidth Estimation in IEEE 802.11-Based Multihop Wireless Networks
Nov 2011
Estimating the available bandwidth in IEEE 802.11-based multi-hop wireless networks is a very difficult task due to the medium sharing among contending nodes and collisions between hidden...
Provided by Association for Computing Machinery
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Whitepapers
Energy-Efficient Bandwidth Reservation for Bulk Data Transfers in Dedicated Wired Networks
Mar 2011
The ever increasing number of Internet-connected end-hosts calls for high-performance end-to-end networks, which in turn leads to an increase in the energy consumed by the networks. The authors'...
Provided by Springer Science+Business Media
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Whitepapers
Optimal Network Size and Encoding Rate for Random Field Estimation With wireless Sensor Networks
Oct 2009
In this paper, the authors address the problem of random field estimation with wireless sensor networks in the absence of CSI at the sensor nodes. They assume that sensors encode their...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
A Very Wideband Antenna With Dynamically-Controllable Band Rejection
Jul 2009
A very wideband slot antenna with reconfigurable stop-band is presented. The reconfiguration is achieved by modifying the effective length of an embedded stop-band-resonator by means of three...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
A Filter Bank Based Ultra-WideBand Receiver Front-End for Ranging Applications
Oct 2009
This paper is intended to detail the practical implementation of a receiver front-end, used in an impulse radio ultra-wideband testbed for low data rate communications and ranging. The receiver...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
UMTS-WiFi Switchable Bandpass Filter
Feb 2009
In this paper a reconfigurable band-pass filter able to switch between WiFi and UMTS transmit band standards is presented. The filter is designed in such a way that center frequency and bandwidth...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Joint Temporal-Spatial Reference Beamforming: EIG Beamforming
Oct 2010
Traditional methods for beamforming can be grouped in two families, the time reference beamformer and the spatial reference beamforming. Nevertheless, the increasing demand on receivers for...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Modeling, Design and Characterization of a Very Wideband Slot Antenna With Reconfigurable Band Rejection
Jul 2010
An antenna exhibiting a very wide bandwidth with reconfigurable rejection within the band is presented. The proposed topology is versatile in terms of the number of available antenna states and...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
UWB Joint TOA and DOA Estimation
Jun 2009
This paper deals with the simultaneous estimation of Time Of Arrival (TOA) and Direction Of Arrival (DOA) in UWB systems considering multipath propagation. The estimation is performed in the...
Provided by Universitat Politecnica de Catalunya
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Whitepapers
Evaluation of Multiple Input Multiple Output (MIMO) System Capacity With Spatial Correlations
Aug 2011
Wireless communication is rapidly becoming the most popular solution to deliver voice and data services due to flexibility and mobility that can be offered at moderate infrastructure costs....
Provided by Science Publications
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White Papers
Bandwidth Partitioning in Decentralized Wireless Networks
Apr 2008
This paper addresses the following question, which is of interest in the design of a multiuser decentralized network. Given a total system bandwidth of W Hz and a fixed data rate constraint of R...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Confidentiality & Authentication Mechanism for Biometric Information Transmitted Over Low Bandwidth & Unreliable Channel
Mar 2011
The security of bio-metric information - finger print, retina mapping, DNA mapping and some other chemical and biological modified genes related information - transfer through low bandwidth and...
Provided by Shobhit University
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Whitepapers
IBM Network Application Optimization Lab
Apr 2011
If your organization is looking for wide area network (WAN) optimization or application delivery technology, you may find yourself evaluating products from a variety of suppliers. This solution...
Provided by IBM
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Whitepapers
Taming the data demons: leveraging information in the age of risk
Apr 2011
The cost of maintaining and protecting data can run higher than the cost to capture it in the first place. This white paper explores the framework and advantages of a holistic approach to data...
Provided by IBM
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White Papers
Auction-Based Bandwidth Allocation Mechanisms for Wireless Future Internet
Jan 2010
An important aspect of the Future Internet is the efficient utilization of (wireless) network resources. In order for the - demanding in terms of QoS - Future Internet services to be provided, the...
Provided by INRIA
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White Papers
Solving the Frequency Assignment Problem by Site Availability and Constraint Programming
Jan 2010
The efficient use of bandwidth for radio communications becomes more and more crucial when developing new information technologies and their applications. The core issues are addressed by the...
Provided by Universidade Federal do Ceara
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White Papers
InfiniBand Software and Protocols Enable Seamless Off-The Shelf Applications Deployment
Dec 2007
InfiniBand architecture defines a high-bandwidth, low-latency clustering interconnect that is used for High-Performance Computing (HPC) and Enterprise Data Center (EDC) class applications. It is...
Provided by Mellanox Technologies
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Whitepapers
Streamlined Data Protection - The Pain of Managing Tape Backups in Branch Offices
Mar 2011
Wide area network (WAN)-based approaches to data backup are dramatically influenced by WAN bandwidth limitations and network latency. Without significant, costly WAN bandwidth upgrades this can...
Provided by Riverbed
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White Papers
Group-Aware Stream Filtering
Jan 2011
In this paper the authors are concerned with disseminating high-volume data streams to many simultaneous context-aware applications over a low-bandwidth wireless mesh network. For bandwidth...
Provided by Dartmouth College
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White Papers
Oblivious Routing in On-Chip Bandwidth-Adaptive Networks
May 2009
Oblivious routing can be implemented on simple router hardware, but network performance suffers when routes become congested. Adaptive routing attempts to avoid hot spots by re-routing flows, but...
Provided by Massachusetts Institute of Technology
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White Papers
Save money with a multi-vendor network solution
Nov 2010
See how you can save your company money by utilizing a customized network with a multi-vendor solution. Research from Gartner demonstrates that using multiple vendors when constructing your...
Provided by Alcatel-Lucent
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White Papers
Strong Optical Injection-Locked Semiconductor Lasers Demonstrating > 100-GHz Resonance Frequencies and 80-GHz Intrinsic Bandwidths
Apr 2008
By using strong optical injection locking, the authors report resonance frequency enhancement in excess of 100 GHz in semiconductor lasers. This paper demonstrates this enhancement in Distributed...
Provided by Optical Society of America
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White Papers
Handling Interdependent Values in an Auction Mechanism for Bandwidth Allocation in Tactical Data Networks
Aug 2008
The authors consider a tactical data network with limited bandwidth, in which each agent is tracking objects and may have value for receiving data from other agents. The agents are self-interested...
Provided by Association for Computing Machinery
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White Papers
Trade & Cap: A Customer-Managed, Market-Based System for Trading Bandwidth Allowances at a Shared Link
Sep 2010
This paper proposes Trade & Cap (T&C), an economics-inspired mechanism that incentivizes users to voluntarily coordinate their consumption of the bandwidth of a shared network link so as to...
Provided by Boston University
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White Papers
Analysis and Enhancement of Bandwidth Request Strategies in IEEE 802.16 Networks
Mar 2010
IEEE 802.16 based broadband wireless access network is considered as one of the most promising wireless access technologies. It employs a request/grant scheme in bandwidth allocation where each...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Bandwidth Recycling in IEEE 802.16 Networks
Mar 2010
IEEE 802.16 standard was designed to support the bandwidth demanding applications with Quality of Service (QoS). Bandwidth is reserved for each application to ensure the QoS. For Variable Bit Rate...
Provided by Iowa State University
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White Papers
DSSS-Based Flow Marking Technique for Invisible Traceback
Mar 2010
Law enforcement agencies need the ability to conduct electronic surveillance to combat crime, terrorism, or other malicious activities exploiting the Internet. However, the proliferation of...
Provided by Texas A&M University
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White Papers
Avoiding Cache Thrashing Due to Private Data Placement in Last-Level Cache for Manycore Scaling
Oct 2009
Without high-bandwidth broadcast, large numbers of cores require a scalable point-to-point interconnect and a directory protocol. In such cases, a shared, inclusive Last Level Cache (LLC) can...
Provided by University of Virginia
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White Papers
Trace Cache: A Low Latency Approach to High Bandwidth Instruction Fetching
Jan 2011
As the issue width of superscalar processors is increased, instruction fetch bandwidth requirements will also increase. It will become necessary to fetch multiple basic blocks per cycle....
Provided by University of Wisconsin
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White Papers
Scalable, Updatable Predictive Models for Sequence Data
Oct 2010
The emergence of data rich domains has led to an exponential growth in the size and number of data repositories, offering exciting opportunities to learn from the data using machine learning...
Provided by Iowa State University
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Whitepapers
Dramatically improve storage efficiency with IBM Storwize V7000
Mar 2011
Your business depends on its data. And you're probably gathering more and more data every day. You need a midrange storage system that offers the efficiency and performance to meet these needs....
Provided by IBM
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White Papers
Model-Based Covert Timing Channels: Automated Modeling and Evasion
Jun 2008
The exploration of advanced covert timing channel design is important to understand and defend against covert timing channels. In this paper, the authors introduce a new class of covert timing...
Provided by George Mason University
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White Papers
Practical Private Set Intersection Protocols With Linear Computational and Bandwidth Complexity
Aug 2010
Increasing dependence on anytime-anywhere availability of data and the commensurately increasing fear of losing privacy motivate the need for privacy-preserving techniques. One interesting and...
Provided by University of California, Irvine
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White Papers
CIOs Feel the pressure to optimize online experience
Mar 2011
In an exclusive survey, members of the CIO Forum on LinkedIn have weighed in on the business impact of application performance. These CIOs and IT leaders say they directly associate application...
Provided by CA
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White Papers
Algorithms for Integrated Routing and Scheduling for Aggregating Data From Distributed Resources on a Lambda Grid
Jan 2008
In many e-science applications, there exists an important need to aggregate information from data repositories distributed around the world. In an effort to better link these resources in a...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
ACR: Active Collision Recovery in Dense Wireless Sensor Networks
Dec 2009
Packet collision causes packet loss and wastes resources in wireless networks. It becomes even worse in dense WSNs, due to burst-traffic and congestion around sinks. In this paper, the authors...
Provided by University of Virginia
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White Papers
An Efficient Algorithm for Measuring Medium-To Large-Sized Flows in Network Traffic
May 2009
It has been well recognized that identifying very large flows (i.e., elephants) in a network traffic stream is important for a variety of network applications ranging from traffic engineering to...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Non-Cooperative Available Bandwidth Estimation Towards ADSL Links
Jul 2008
Existing tools for the estimation of the end-to-end available bandwidth require control of both end hosts of the path and this significantly limits their usability. In this paper the authors...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Channel Access Delay Analysis of IEEE 802-16 Best Effort Services
Jul 2008
One of the basic QoS service classes in IEEE 802.16 network is Best Effort (BE). This service class supports services that don't need any QoS requirements like minimum bandwidth. However many of...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Qualitative Policies for Bandwidth Priorities in Ad-Hoc Networks
Jul 2008
The Analytic Hierarchic Process (AHP) is used for presenting a method for setting up policies that define priorities among services sharing a limited measure of bandwidth in an ad-hoc radio...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Tracking Cardinality Distributions in Network Traffic
May 2009
Understanding the aggregate behavior of network host connectivity is important for network monitoring and traffic engineering. One characterization of such an aggregate behavior is the host...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Bandwidth Optimal All-Reduce Algorithms for Clusters of Workstations
Jan 2011
The authors consider an efficient realization of the all-reduce operation with large data sizes in cluster environments, under the assumption that the reduce operator is associative and...
Provided by Florida State University
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White Papers
Competitive Scheduling in Wireless Collision Channels With Correlated Channel State
Nov 2008
The authors consider a wireless collision channel, shared by a finite number of mobile users who transmit to a common base station. Each user wishes to optimize its individual network utility that...
Provided by Massachusetts Institute of Technology
-
White Papers
An Optimization Based Approach for Quality of Service Routing in High-Bandwidth Networks
Jan 2011
In this paper, the authors propose an optimization based approach for Quality of Service routing in high-bandwidth networks. They view a network that employs QoS routing as an entity that...
Provided by Purdue University
-
White Papers
Bandwidth Allocation in Hexagonal Wireless Sensor Networks for Real-Time Communications
Jan 2011
This paper presents an algorithm for bandwidth allocation for delay-sensitive traffic in multi-hop wireless sensor networks. The solution considers both periodic as well as a periodic real-time...
Provided by University of Virginia
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White Papers
The Design, Implementation and Performance Evaluation of Xylophone: A Scalable QoS-Enabled WiFi Locator Service
Jul 2010
WiFi access points that provide Internet access to users have been steadily increasing in urban areas. Different access points different from one another in terms of services that they provide,...
Provided by University of Colorado at Boulder
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White Papers
APEnet+: High Bandwidth 3D Torus Direct Network for Petaflops Scale Commodity Clusters
Feb 2011
This paper describes herein the APElink+ board, a PCIe interconnect adapter featuring the latest advances in wire speed and interface technology plus hardware support for a RDMA programming model...
Provided by Universita Degli Studi di Roma
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White Papers
A New Bound on the Performance of the Bandwidth Puzzle
Feb 2011
A bandwidth puzzle was recently proposed to defend against colluding adversaries in peer-to-peer networks. The colluding adversaries do not do actual work but claim to have uploaded contents for...
Provided by Florida State University
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White Papers
Packet-Pair Technique for Available Bandwidth Estimation in IPv6 Network
Feb 2011
This paper presents experimental checking of the model for measuring available bandwidth in IPv6. The experiment was performed using a measuring infrastructure RIPE test box, ensuring precision...
Provided by Samara State Aerospace University
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White Papers
Peacock Hashing: Deterministic and Updatable Hashing for High Performance Networking
Jan 2008
Hash tables are extensively used in networking to implement data-structures that associate a set of keys to a set of values, as they provide O(1), query, insert and delete operations. However, at...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
An Enhanced Data-Reduction Algorithm for Event-Triggered Networks
Jul 2009
As functionality of vehicles increases in complexity, the demand on the in-vehicle networks increases as well. Maximum bus utilization often becomes the communication bottleneck. One way to...
Provided by Institute of Electrical & Electronic Engineers
-
White Papers
Drivers' Anonymity With a Short Message Length for Vehicle-to-Vehicle Communications Network
Dec 2007
In this paper, the authors propose a broadcast protocol to preserve drivers' anonymity in Vehicle-To-Vehicle (V2V) communications network using the keyed-Hash Message Authentication Code (HMAC)....
Provided by Institute of Electrical & Electronic Engineers
-
White Papers
One-Tap Equalizer for Perfect Reconstruction DFT Filter Bank Transceivers
Jun 2009
In this paper, the authors investigate a simple equalization method for DFT filter bank transceivers. They assume the presence of Perfect Reconstruction (PR) DFT filter banks and make use of this...
Provided by Institute of Electrical & Electronic Engineers
-
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
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
RF MEMS Suspended Band-Stop Resonator and Filter for Frequency and Bandwidth Continuous Fine Tuning
Dec 2011
Tunable band-stop resonators are the building block to produce tunable band-stop filters that can play an important role in wireless communication receivers. The authors can be used in adaptable...
Provided by IOP Publishing
-
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
-
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)
-
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
-
Whitepapers
Mirror on the Ceiling: Flexible Wireless Links for Data Centers
Jun 2012
Modern data centers are massive, and support a range of distributed applications across potentially hundreds of server racks. As their utilization and bandwidth needs continue to grow, traditional...
Provided by Association for Computing Machinery
-
Whitepapers
Modeling In-Network Aggregation in VANETs
Nov 2011
The multitude of applications envisioned for Vehicular Ad-hoc NETworks (VANETs) requires efficient communication and dissemination mechanisms to prevent network congestion. In-network data...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
On the Potential of Generic Modeling for VANET Data Aggregation Protocols
Dec 2011
In-network data aggregation is a promising communication mechanism to reduce bandwidth requirements of applications in Vehicular Ad-hoc NETworks (VANETs). Many aggregation schemes have been...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Strictly Localized Sensor Self-Deployment for Optimal Focused Coverage
Nov 2011
Sensor self-deployment is an important research issue that deals with autonomous coverage formation in Mobile Sensor Networks (MSN). Relevant research is still on its initial stage, with emerging...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Real-Time Scheduling in LTE for Smart Grids
Feb 2012
The latest wireless network, 3GPP Long Term Evolution (LTE), is considered to be a promising solution for smart grids because it provides both low latency and large bandwidth. However, LTE was not...
Provided by KTH - Royal Institute of Technology
-
Whitepapers
A Flexible and Reliable Architecture for Mobile Agent Security
Apr 2009
Wireless application protocol is a protocol that makes it possible to surf the Internet from a cellular phone or other handheld wireless. Many of them that surf the Internet from home with a 56...
Provided by Science Publications
-
Whitepapers
Opportunistic Sampling for Random Field Estimation With M2M Capillary Networks
Nov 2010
In this paper, the authors address the problem of the estimation of spatial random fields from the samples collected by a number of sensing devices in a capillary M2M network. In order to preserve...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
-
Whitepapers
Optimal Network Size and Encoding Rate for Wireless Sensor Network-Based Decentralized Estimation Under Power and Bandwidth Constraints
Apr 2011
In this paper, the authors address the problem of decentralized parameter estimation via Wireless Sensor Networks (WSNs). They consider two different encoding strategies, namely,...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Optimal Dimensioning of Sensor Networks for Spatial Field Estimation With Random Sampling
Feb 2011
In this paper, the authors address the problem of the estimation of a two-dimensional spatial field (e.g. atmospheric pressure) with a wireless sensor network. They assume that the field is...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
-
Whitepapers
Lab Trial of a GMPLS Controlled MPLS-TP Packet Transport Network With Source/PCE Path Computations
Jul 2011
A lab trial validating the implemented GMPLS control plane for MPLS-TP in the ADRENALINE testbed is presented. The authors experimentally compare the establishment of bidirectional LSPs using...
Provided by Optical Society of America
-
Whitepapers
Superconducting Multiplexer Filter Bank for a Frequency-Selective Power Limiter
Dec 2010
This paper proposes a superconducting multiplexer filter bank configuration to be used as a frequency-selective power limiter. The proposed configuration limits narrowband high-power signals...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Cooperative Satellite to Land Mobile Gap-Filler-Less Interactive System Architecture
Sep 2010
Considerable efforts are being made in the area of interactive satellite broadcast services to mobiles, which range from the development of specific communication standards to the realization of...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
UWB Receiver Based on Microwave Filter-Bank
Mar 2010
In this paper, the authors propose a sampling stage based on a bank of microwave filters for an Ultra-WideBand (UWB) receiver. The objective of the proposed frequency domain sampling scheme is to...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Passive Devices for UWB Systems
Sep 2010
The release from the U.S. Federal Communication Commission (FCC) of the unlicensed use of the Ultra-Wide-Band (UWB) frequency range of 3.1-10.6 GHz, fed the interest for developing communication...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
On the Energy Efficiency of Centralized and Decentralized Management for Reservation-Based Networks
Jan 2012
Reducing the energy consumption of wired networks has become a key concern for manufacturers of network equipment and network providers. In this paper, the authors propose an energy-efficient data...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Retransmission-Based Available Bandwidth Estimation in IEEE 802.11-Based Multihop Wireless Networks
Nov 2011
Estimating the available bandwidth in IEEE 802.11-based multi-hop wireless networks is a very difficult task due to the medium sharing among contending nodes and collisions between hidden...
Provided by Association for Computing Machinery
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Whitepapers
Energy-Efficient Bandwidth Reservation for Bulk Data Transfers in Dedicated Wired Networks
Mar 2011
The ever increasing number of Internet-connected end-hosts calls for high-performance end-to-end networks, which in turn leads to an increase in the energy consumed by the networks. The authors'...
Provided by Springer Science+Business Media
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Whitepapers
Optimal Network Size and Encoding Rate for Random Field Estimation With wireless Sensor Networks
Oct 2009
In this paper, the authors address the problem of random field estimation with wireless sensor networks in the absence of CSI at the sensor nodes. They assume that sensors encode their...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
A Very Wideband Antenna With Dynamically-Controllable Band Rejection
Jul 2009
A very wideband slot antenna with reconfigurable stop-band is presented. The reconfiguration is achieved by modifying the effective length of an embedded stop-band-resonator by means of three...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
A Filter Bank Based Ultra-WideBand Receiver Front-End for Ranging Applications
Oct 2009
This paper is intended to detail the practical implementation of a receiver front-end, used in an impulse radio ultra-wideband testbed for low data rate communications and ranging. The receiver...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
UMTS-WiFi Switchable Bandpass Filter
Feb 2009
In this paper a reconfigurable band-pass filter able to switch between WiFi and UMTS transmit band standards is presented. The filter is designed in such a way that center frequency and bandwidth...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Joint Temporal-Spatial Reference Beamforming: EIG Beamforming
Oct 2010
Traditional methods for beamforming can be grouped in two families, the time reference beamformer and the spatial reference beamforming. Nevertheless, the increasing demand on receivers for...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Modeling, Design and Characterization of a Very Wideband Slot Antenna With Reconfigurable Band Rejection
Jul 2010
An antenna exhibiting a very wide bandwidth with reconfigurable rejection within the band is presented. The proposed topology is versatile in terms of the number of available antenna states and...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
UWB Joint TOA and DOA Estimation
Jun 2009
This paper deals with the simultaneous estimation of Time Of Arrival (TOA) and Direction Of Arrival (DOA) in UWB systems considering multipath propagation. The estimation is performed in the...
Provided by Universitat Politecnica de Catalunya
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Whitepapers
Evaluation of Multiple Input Multiple Output (MIMO) System Capacity With Spatial Correlations
Aug 2011
Wireless communication is rapidly becoming the most popular solution to deliver voice and data services due to flexibility and mobility that can be offered at moderate infrastructure costs....
Provided by Science Publications
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Whitepapers
Testing for Normality of UWB-Based Distance Measurements by the Anderson-Darling Statistic
Mar 2010
The Ultra-Wideband measurement campaign promoted within NEWCOM++ is intended to provide real-world data to researchers. The set of measurements are composed of a number of distance estimates from...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Wideband Representation of Passive Components Based on Planar Waveguide Junctions
May 2010
In this paper, the authors have presented a very efficient procedure to compute the wideband generalized impedance and admittance matrix representations of cascaded planar waveguide junctions,...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Realistic Media Streaming Over BitTorrent
Apr 2012
While BitTorrent was originally conceived as a Peer-to-Peer file exchange protocol, it has proved extremely successful for asynchronous content distribution, allowing content sources to support...
Provided by Athens University of Economics and Business
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Whitepapers
MultiCache: An Incrementally Deployable Overlay Architecture for Information-Centric Networking
May 2010
It has been long realized that the Internet is evolving from a network connecting pairs of end hosts to a substrate for information dissemination. While this shift towards information centric...
Provided by Athens University of Economics and Business
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Whitepapers
Router Assisted Overlay Multicast
Jul 2009
While multicasting is considered valuable for content distribution, it is not widely supported on the Internet. Content providers have instead turned to peer assisted content distribution in order...
Provided by Athens University of Economics and Business
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Whitepapers
An Energy-Efficient and High-Speed Mobile Memory I/O Interface Using Simultaneous Bi-Directional Dual (Base+RF)-Band Signaling
Jan 2012
A fully-integrated 8.4 Gb/s 2.5 pJ/b mobile memory I/O transceiver using simultaneous bi-directional dual band signaling is presented. Incorporating both RF-band and baseband transceiver designs,...
Provided by Institute of Electrical & Electronic Engineers
